Category: Uncategorized

Are Your PVC-U Sash Windows Ready For The Super Regulator?

The regulatory landscape around windows is tightening. Fast.

Across the glazing industry, there is growing talk of the “Super Regulator”. Not a single new authority, but a shift towards tougher, more coordinated enforcement of Building Regulations, product standards, and energy performance requirements.

For anyone specifying, supplying, or installing PVC-U sash windows, this is no longer background noise. It has real implications for product choice, installation standards, and long-term compliance.

So the key question is no longer whether regulations will change, but whether the sash windows you are using are already built to withstand that scrutiny.

What Do We Mean By The Super Regulator?

The phrase “Super Regulator” is increasingly used to describe how regulatory oversight is evolving within the construction and glazing sectors.

Rather than isolated checks, we are seeing:

  • closer alignment between Building Control, Part L enforcement, and product certification
  • increased focus on whole-window performance, not just glazing
  • less tolerance for borderline specifications or vague compliance claims
  • greater responsibility placed on installers and suppliers, not only manufacturers

Part L of the Building Regulations, which governs energy efficiency in buildings, has already tightened significantly in recent years, with further changes expected as the UK works towards its net zero targets. Guidance on Part L can be found via the UK Government’s Building Regulations Approved Documents.

This matters because windows sit at the heart of several regulatory priorities, including energy efficiency, building safety, and long-term performance.

Why PVC-U Sash Windows Are Facing Greater Scrutiny

PVC-U sash windows have grown in popularity for good reason. They offer a strong alternative to timber, particularly in refurbishment, heritage-style developments, and mixed housing stock.

However, not all PVC-U sash windows are designed to the same standard.

As enforcement tightens, regulators are looking beyond surface aesthetics and asking harder questions about how these windows actually perform.

Key areas under the microscope include:

  • frame design and chamber construction
  • glazing specification and spacer technology
  • air permeability and draught performance
  • consistency of manufacture
  • quality of installation on site

A sash window that looks traditional but lacks robust performance data is far more likely to be challenged than it would have been even a few years ago.

Modern systems such as Mercury Glazing’s PVC-U vertical sliding sash windows are engineered specifically to address these concerns, combining heritage styling with tested thermal and structural performance.

Part L, U-Values, And Whole-Window Performance

Part L continues to push expectations upwards. Lower U-values, improved energy efficiency, and reduced heat loss are now central requirements rather than future goals.

For PVC-U sash windows, this has several knock-on effects.

Older double-glazed specifications that once passed without question may now struggle to meet current expectations. Decorative elements such as bars or horns can negatively affect performance if poorly designed. Frame-to-glass ratios also play a much larger role than many installers realise.

Increasingly, it is the whole-window U-value that matters, not just the glazing unit in isolation.

This is where modern sash window systems with slim but thermally efficient profiles, advanced glazing options, and certified test data make a measurable difference. Mercury Glazing’s PVC-U window ranges are designed with current Part L requirements in mind.

For wider industry context, the Future Homes Standard and associated energy efficiency targets continue to shape expectations for building components, including windows.

Balancing Heritage Appearance With Modern Compliance

One of the most persistent myths in the glazing world is that traditional appearance and regulatory compliance are fundamentally at odds.

That may once have been true, but it no longer needs to be.

Today’s PVC-U sash windows can closely replicate classic timber proportions while still delivering strong thermal performance. Mechanical joints, run-through sash horns, slim sightlines, and carefully considered detailing all help achieve this balance.

What regulators and planners increasingly want to see is not compromise, but proof.

That includes:

  • documented performance data
  • glazing specifications appropriate to the building type
  • evidence that aesthetic features do not undermine efficiency
  • confidence that the product is fit for long-term use

This is particularly important in conservation-led projects, where windows must satisfy both planning officers and Building Control. Purpose-designed heritage-style sash windows, rather than generic profiles adapted after the fact, are far better positioned to meet these expectations.

The Growing Responsibility On Installers And Specifiers

Perhaps the most significant change brought about by the Super Regulator effect is where accountability now sits.

Installers can no longer rely solely on a manufacturer’s headline claims. Poor installation, incorrect specification, or missing documentation can all trigger compliance issues, delays, or even remedial work.

This aligns closely with wider regulatory changes around building safety and accountability, including the strengthened role of Building Control bodies and the emphasis on traceability throughout the supply chain.

For installers and developers, this places greater importance on working with suppliers who provide:

  • clear and accessible technical documentation
  • consistent product performance across batches
  • reliable support when Building Control queries arise
  • sash window systems designed to meet current regulations, not historic ones

Are Your Current Sash Window Specifications Fit For The Future?

A useful sense-check for any installer or developer is to ask three simple questions.

Can I clearly demonstrate Part L compliance today?
Would this product still meet tightening standards in the next regulatory cycle?
Do I have the documentation to satisfy Building Control if challenged?

If the answer to any of these is uncertain, the specification may already be behind the curve.

Future-proofing does not mean chasing every regulatory rumour. It means choosing sash window systems that already exceed minimum requirements and are engineered with long-term compliance in mind.

What This Shift Means For Mercury Glazing Customers

For Mercury Glazing, the rise of the Super Regulator reinforces an approach that is already well established.

PVC-U sash windows are designed to balance heritage aesthetics with modern performance, supported by proper certification and transparent technical data. Whether for refurbishment, new build, or heritage-style projects, the focus is on supplying products that stand up to scrutiny today and tomorrow.

For installers, developers, and specifiers, that means fewer surprises, smoother approvals, and greater confidence that the windows you install now will not become a regulatory headache later.

The Super Regulator is not something to fear, but it does reward those who are prepared.

Cliff House, Felixstowe

VIEW PROJECT

Foxhill House, Chester

VIEW PROJECT

University of Sussex, Brighton

VIEW PROJECT

Varndean College, Brighton

VIEW PROJECT

From sash windows to aluminium bifold doors, our high-quality products are engineered and manufactured right here in Britain. We work with fellow UK-operated companies, Spectus Window Systems, Smart Systems, and Jack Aluminium Systems, to deliver only the very best to our trade, commercial and residential customers.

FILL OUR CONTACT FORM

  • How much do French doors cost to install in the UK?

    The cost of installing French doors in the UK varies depending on the size, material, and design. At Mercury Glazing, we offer competitive pricing tailored to your specific needs. Please contact us for a personalised quote.

  • How to fit door handles?

    Fitting door handles can be a straightforward process. First, measure and mark the position on the door, drill the necessary holes, then attach the handle with screws. For detailed instructions or professional fitting services, feel free to reach out to us.

  • How to replace patio doors?

    Replacing patio doors involves removing the old doors, preparing the opening, and installing the new doors. It's a task best handled by professionals to ensure a perfect fit and functionality.

  • How much do patio doors cost?

    The cost of patio doors varies based on size, material, and design. Contact us at Mercury Glazing for a bespoke quote that matches your specific requirements.

  • How much are French doors?

    The price of French doors depends on the material, size, and design details. We offer a range of options to suit various budgets. Please get in touch for a tailored quote.

OUR ACCREDITATIONS

Creating a Premium Showroom Experience with Printed Marketing Materials

Printed Marketing Still Matters for Window and Door Showrooms

When a customer steps into a showroom, every detail shapes their impression of the business. The layout, the displays, and the way information is presented all contribute to whether they feel confident about making a purchase. One of the most effective yet often overlooked tools is printed marketing material. Mercury Glazing supports its trade partners with bespoke printed brochures and technical guides branded to their business. These materials turn a showroom visit into a professional and memorable experience that leaves a lasting impression.

Printed brochures and literature are more than handouts. They are a way to extend trust, provide reassurance, and showcase product quality in a format customers can keep. Below we explore why print still matters and how Mercury’s tailored materials help trade partners succeed.

Creating a Premium Showroom Experience

A showroom should feel like an extension of the installer’s professionalism. While seeing windows, doors, and rooflights in person is essential, printed materials complete the experience by guiding visitors through ranges and specifications.

Mercury’s trade partners benefit from brochures that are customised with their own branding, ensuring that customers see a seamless connection between the products and the business presenting them. By combining premium print with a professional showroom setting, installers create an environment that reflects quality and trust from the very first moment.

A Tangible Connection with Customers

In a world where most marketing happens on a screen, customers value something they can hold. Printed brochures allow people to flick through pages, admire photography, and compare details at their own pace.

This tactile experience makes a stronger impression than scrolling through a website. For homeowners investing in products like bifold doors or sliding sash windows, a brochure is a physical reminder of their visit and of the installer they are considering. Mercury makes sure its trade partners are equipped with materials that feel professional and personal.

Learn More About the Mercury Partnership

Continuing the Conversation at Home

Big decisions are rarely made in the showroom itself. Families take time to review options, weigh up specifications, and think through budgets. A brochure taken home means your business remains part of that conversation.

Mercury’s printed materials are designed to carry a partner’s branding so that when a brochure sits on the coffee table, it is your company name and logo customers see every day. This keeps your business front of mind long after the initial visit, helping to convert interest into a sale.

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Building Trust and Credibility

Professional printed materials communicate more than product details. They signal credibility and reliability. A well-branded brochure shows customers they are dealing with an established business that takes quality seriously.

Mercury ensures that each partner’s print includes accurate technical information, performance data, and relevant accreditations. From energy efficiency ratings to security standards, every detail reassures customers that they are making a sound investment. For partners, this level of detail builds confidence and strengthens their reputation.

Standing Out in a Digital-Heavy World

With so much competition online, businesses can easily blur together. Printed materials cut through the noise. They offer customers a break from digital overload and a chance to focus on your products without distraction.

For Mercury’s partners, the advantage is clear. A bespoke brochure that carries your branding is far more memorable than another online ad or social post. It signals professionalism and helps you stand out in a crowded marketplace.

Better for Showroom Consultations

Printed brochures are also valuable during in-person discussions. They allow installers to sit with customers, compare ranges side by side, and make notes directly on the page. This approach creates a collaborative, straightforward consultation.

For customers who may not be as comfortable with technology, brochures offer reassurance and clarity. Mercury designs its literature with clear layouts, imagery, and specifications to make conversations more productive and customer-friendly.

Supporting Both Digital and Print Together

The strongest results come from using digital and print side by side. Online channels generate leads, while printed brochures build the trust needed to close a sale. Mercury designs its printed materials to complement digital efforts, often integrating QR codes or links that guide customers to online resources.

For trade partners, this creates a cohesive marketing journey where brochures, websites, and social media all work together. Customers can browse printed brochures, scan a code to see a detailed specification online, and then return to the showroom ready to make a decision.

Helping You to Win More Customers

Printed marketing materials remain one of the most effective tools for building customer trust and creating a professional showroom experience. Mercury Glazing makes this even more powerful by producing bespoke brochures and technical packs tailored to each trade partner’s branding.

For installers, this support means more than just product supply. It means having the right marketing tools to strengthen credibility, stand out in a digital-first world, and keep customers engaged long after they leave the showroom. Learn more about the benefits of becoming a Mercury Partner and discover how you can access branded marketing support. To explore a partnership or request more information, visit our Partner page or get in touch directly via our Contact page.

Cliff House, Felixstowe

VIEW PROJECT

Foxhill House, Chester

VIEW PROJECT

University of Sussex, Brighton

VIEW PROJECT

Varndean College, Brighton

VIEW PROJECT

From sash windows to aluminium bifold doors, our high-quality products are engineered and manufactured right here in Britain. We work with fellow UK-operated companies, Spectus Window Systems, Smart Systems, and Jack Aluminium Systems, to deliver only the very best to our trade, commercial and residential customers.

FILL OUR CONTACT FORM

  • How much do French doors cost to install in the UK?

    The cost of installing French doors in the UK varies depending on the size, material, and design. At Mercury Glazing, we offer competitive pricing tailored to your specific needs. Please contact us for a personalised quote.

  • How to fit door handles?

    Fitting door handles can be a straightforward process. First, measure and mark the position on the door, drill the necessary holes, then attach the handle with screws. For detailed instructions or professional fitting services, feel free to reach out to us.

  • How to replace patio doors?

    Replacing patio doors involves removing the old doors, preparing the opening, and installing the new doors. It's a task best handled by professionals to ensure a perfect fit and functionality.

  • How much do patio doors cost?

    The cost of patio doors varies based on size, material, and design. Contact us at Mercury Glazing for a bespoke quote that matches your specific requirements.

  • How much are French doors?

    The price of French doors depends on the material, size, and design details. We offer a range of options to suit various budgets. Please get in touch for a tailored quote.

OUR ACCREDITATIONS

The Hidden Cost of Going Back: Why Quality Windows and Doors Matter

Quality Glazing Products That Protect Your Reputation

Every installer knows the frustration of a call-back. The job seemed fine on completion, but days, weeks, or months later, the customer is back on the phone. A hinge sticking, a draught creeping in, or a lock not operating smoothly. Suddenly, a profitable project starts to drain time, money, and reputation.

As one Mercury partner put it: “It’s not about the cost of purchase, it’s the cost of going back.” That phrase captures the reality of today’s competitive trade environment. Choosing cheaper or lower-quality glazing products may look like a saving at the outset, but the long-term cost of revisits, replacements, and reputational damage can be far greater.

For trade professionals, the real value lies in reliability. That is why Mercury Glazing focuses on high-quality aluminium and PVC-U systems, backed by technical expertise and trade support through the Mercury Partner programme.

The Hidden Cost of Poor Quality

At first glance, a cheaper supplier or product range might seem appealing. Margins are tight, competition is high, and customers often push for the lowest possible price. But what happens when that product fails? Poorly fabricated windows or doors may lead to:
  • Repeated service calls to fix issues
  • Replacement parts or complete units at your cost
  • Unhappy customers leaving poor reviews or spreading negative word of mouth
  • Lost time that could have been spent on new, profitable installations
According to the Glass & Glazing Federation, complaints about poor installation and product performance remain one of the most common challenges in the industry (GGF report). For trade installers, even one or two callbacks a month can wipe out the financial benefit of choosing a cheaper product line.

Time is Money for Installers

Every call-back has a price. Travel, labour, fuel, and lost opportunities add up quickly. What looks like a minor repair can eat half a day, meaning fewer billable hours on new jobs.

Even if manufacturers cover warranty issues, the installer is usually the one facing the customer directly. That means investing personal time to revisit the site, arrange repairs, and manage the client relationship.

Reliable products eliminate that drain. Mercury’s trade partners repeatedly highlight the difference that comes from installing systems that fit right first time and perform consistently. By choosing proven aluminium and PVC-U products, installers protect their time and maximise profitability.

Reliability Protects Your Reputation

In the glazing trade, reputation is everything. One poor installation experience can undo years of hard work. Online reviews and local recommendations carry significant weight, especially when customers invest in high-value products such as bifold doors, sliding sash windows, or bespoke aluminium glazing.

When products fail, customers don’t always blame the manufacturer — they blame the installer. That means reputational damage falls on your business, even if the underlying issue was a supplier’s fault.

By joining the Mercury Partner programme, trade professionals gain more than just access to quality products. They benefit from a partnership that strengthens credibility, with brochures, branding support, and technical backup that reassure customers they are choosing a trusted installer.

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Quality Products = Long-Term Savings

High-quality windows and doors may cost a little more upfront, but they deliver significant savings over time. Consider the difference:
  • Cheaper products: higher chance of failure, multiple call-backs, replacement parts, and wasted labour. 
  • Quality products: minimal call-backs, long-term customer satisfaction, stronger referrals, and reduced stress. 
Independent testing shows that well-fabricated aluminium systems, with proper thermal breaks and quality hardware, outperform lower-cost alternatives on both energy efficiency and durability (CAB Aluminium in Building). For installers, that means fewer complaints, fewer replacements, and more time focused on growth. By offering premium systems, installers also elevate their customer base. Homeowners and developers who value quality are less likely to haggle on price and more likely to provide referrals, creating a cycle of reliable work.

Peace of Mind Has Real Value

For installers, peace of mind means confidence that every job is completed to a high standard. It means knowing that the products being fitted won’t lead to late-night phone calls, frustrated customers, or unexpected costs.

Mercury Glazing invests heavily in product quality, in-house technical expertise, and dedicated trade support. That reassurance is built into every partnership. By working with Mercury, installers know they are not alone — they have a supplier who stands behind their products and provides the backup needed to protect their business reputation.

How Mercury Supports Trade Partners

The Mercury Partner programme is designed specifically for trade professionals who want to grow without compromising on quality. Partners benefit from:

  • Reliable, British-made aluminium and PVC-U windows and doors
  • Fast quotes and consistent lead times
  • Bespoke printed marketing materials branded to their business
  • Technical advice and backup from an experienced team
  • Showroom and sales support to build credibility

For trade businesses, this level of support removes the hidden costs of going back and replaces them with long-term profitability and stronger customer trust. Learn more about the benefits of becoming a Mercury Partner.

A Partner You Can Trust In

In the trade, margins are always under pressure, but chasing the lowest cost product often leads to the highest overall expense. Every call-back, every replacement, and every unhappy customer chips away at profitability and reputation.

The phrase holds true: it’s not about the cost of purchase, it’s the cost of going back. By choosing high-quality products and working with a supplier that values reliability, installers protect their time, their earnings, and their reputation.

Mercury Glazing delivers that reliability through its Partner programme, ensuring trade professionals have the products, support, and branding tools needed to stand out. To protect your business from the hidden costs of going back, discover more about becoming a Mercury Partner today.

Cliff House, Felixstowe

VIEW PROJECT

Foxhill House, Chester

VIEW PROJECT

University of Sussex, Brighton

VIEW PROJECT

Varndean College, Brighton

VIEW PROJECT

From sash windows to aluminium bifold doors, our high-quality products are engineered and manufactured right here in Britain. We work with fellow UK-operated companies, Spectus Window Systems, Smart Systems, and Jack Aluminium Systems, to deliver only the very best to our trade, commercial and residential customers.

FILL OUR CONTACT FORM

  • How much do French doors cost to install in the UK?

    The cost of installing French doors in the UK varies depending on the size, material, and design. At Mercury Glazing, we offer competitive pricing tailored to your specific needs. Please contact us for a personalised quote.

  • How to fit door handles?

    Fitting door handles can be a straightforward process. First, measure and mark the position on the door, drill the necessary holes, then attach the handle with screws. For detailed instructions or professional fitting services, feel free to reach out to us.

  • How to replace patio doors?

    Replacing patio doors involves removing the old doors, preparing the opening, and installing the new doors. It's a task best handled by professionals to ensure a perfect fit and functionality.

  • How much do patio doors cost?

    The cost of patio doors varies based on size, material, and design. Contact us at Mercury Glazing for a bespoke quote that matches your specific requirements.

  • How much are French doors?

    The price of French doors depends on the material, size, and design details. We offer a range of options to suit various budgets. Please get in touch for a tailored quote.

OUR ACCREDITATIONS

Supplying Aluminium Doors: What Every Trade Partner Should Know

Introduction

Aluminium doors have become one of the most sought-after glazing products in the UK. Homeowners, developers and architects increasingly request modern designs that deliver security, energy efficiency and style. For trade installers, offering aluminium doors is not just a way to meet customer demand, it is essential to staying competitive.

Mercury Glazing supplies a wide range of trade aluminium door systems from leading brands including Smart and Aluspace. From bifold doors that transform living spaces to stylish entrance doors and internal screens, our product range gives installers the flexibility to meet every type of project requirement.

Short Summary

Mercury Glazing offers trade aluminium doors including Smart Signature, Smart Visofold 1000 bifolds, Aluspace internal doors, Smart Visoglide Plus sliding doors and Smart Designer entrance doors. Each system combines strength, energy efficiency and contemporary design. For installers, they provide reliable products that meet compliance requirements and appeal to customers across residential, commercial and refurbishment projects.

Why You Can Trust Us

Mercury Glazing has supplied trade installers with high-quality aluminium doors for over 20 years. All of our products are manufactured in the UK using trusted systems from Smart and Aluspace. They are tested to meet security and performance standards, including PAS 24 where applicable, ensuring compliance with current Building Regulations. We also support trade partners with estimating, marketing materials and technical advice so they can install with confidence and secure more projects.

Why Aluminium Doors Are in Demand

Modern homeowners want more than just a functional door. They expect products that enhance the look of their property, improve energy efficiency and connect seamlessly with their lifestyle. Aluminium doors meet all these expectations. Their slim sightlines maximise natural light, their strength allows for larger openings and their versatility suits both contemporary and traditional settings.

According to the Construction Products Association, demand for high-performance building products is set to continue growing, with aluminium playing a central role. For installers, this makes trade aluminium doors a valuable product line for both residential and commercial customers.

Mercury’s Aluminium Door Range

Smart Signature Aluminium Doors

Smart Signature doors are versatile aluminium entrance systems designed to balance style and security. Available in a wide range of colours and finishes, they allow homeowners to personalise their front door while benefiting from thermal efficiency and robust security features. For installers, they offer a product that makes an immediate impact on kerb appeal and provides peace of mind to customers.

Smart Visofold 1000 Aluminium Bifold Doors

Bifold doors remain one of the most popular home improvement products. The Smart Visofold 1000 system is a market leader, designed for smooth operation, slim frames and excellent thermal performance. Installers can offer their customers a trusted solution for open-plan living, seamless garden access and brighter interiors.
For more details, see our Smart Visofold 1000 bifold doors.

Aluspace Aluminium Internal Doors

Internal aluminium doors are growing in popularity, particularly in refurbishment and modern design projects. The Aluspace

system provides elegant internal screens and doors that divide spaces without sacrificing light or openness. Installers can use Aluspace to meet demand for loft-style interiors, office conversions and contemporary living spaces. 

Smart Visoglide Plus Patio Sliding Door

Sliding patio doors are perfect for projects where homeowners want large glazed openings with minimal obstruction. The Smart Visoglide Plus system offers smooth operation, thermal efficiency and excellent security. Its slimline design enhances views while maintaining durability. For installers, this is a reliable and in-demand product suitable for both new builds and refurbishments.

Smart Designer Doors

For homeowners looking for a statement entrance, the Smart Designer Door range provides bold styling with advanced performance. Offering a wide choice of designs and finishes, these doors allow customers to personalise their property while benefiting from strong security and modern insulation.

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Benefits of Supplying Aluminium Doors

Strength and Security

Aluminium is inherently strong, which means our door systems can accommodate larger glass panels without compromising performance. Mercury’s aluminium doors are tested to PAS 24 standards where applicable, ensuring compliance with Approved Document Q (external link). For installers, this makes it easier to reassure customers and meet regulations.

Thermal Efficiency

Energy efficiency remains a top priority for both homeowners and developers. All Mercury aluminium doors are designed with thermal breaks to reduce heat transfer and improve insulation. For installers, this provides a strong selling point and ensures compliance with the latest Building Regulations.

Design Flexibility

From bifold systems to internal partitions, our aluminium doors cover a wide spectrum of applications. This flexibility means trade partners can supply solutions for everything from contemporary home renovations to commercial offices.

Long-Term Durability

Aluminium doors are low-maintenance, resistant to warping or rotting, and built to last for decades. For trade partners, this reliability reduces the likelihood of call-backs and helps maintain strong customer relationships.

Opportunities Across Sectors

Aluminium doors are suited to both residential and commercial projects. Installers can use Mercury’s range to win contracts for new-build housing, refurbishments, office fit-outs, and bespoke residential projects. The versatility of systems like Aluspace and Visoglide Plus ensures that trade partners can meet the needs of diverse markets.

Commercial and Residential Opportunities

Aluminium windows are not just for homeowners. They are widely specified in commercial projects including offices, schools, and retail developments. For trade installers, this opens the door to larger contracts and ongoing supply agreements. Mercury’s ability to manufacture bespoke solutions means trade partners can meet the needs of both sectors with confidence.

Why Choose Mercury Glazing?

Mercury provides more than just aluminium doors. We give our trade partners:

  • Estimating support for accurate quotations
  • Professional brochures and sales materials
  • Technical advice and compliance guidance
  • Reliable UK-manufactured products from leading systems companies
  • A partnership approach that helps installers grow their businesses

     

To learn more, visit the Mercury Partner page.

Sustainability and Aluminium Doors

Sustainability is increasingly important in construction. Aluminium is 100% recyclable and retains its properties indefinitely, making it one of the most sustainable building materials available. The UK Green Building Council (external link) highlights the importance of choosing sustainable products, and aluminium doors align with these expectations. For installers, this adds value to sales conversations and helps secure projects where sustainability is a priority.

Common Customer Questions About Aluminium Doors

  • What types of aluminium doors do Mercury supply?
     Mercury offers Smart Signature, Smart Visofold 1000, Aluspace internal doors, Smart Visoglide Plus sliding doors and Smart Designer entrance doors.

  • Are aluminium doors energy-efficient?
     Yes, all our doors are manufactured with advanced thermal breaks to achieve excellent energy ratings.

  • How long do aluminium doors last?
     Aluminium doors can last several decades with minimal maintenance, making them a cost-effective investment.

  • Can aluminium doors be customised?
    Yes, Mercury offers a wide choice of finishes, styles and glazing options to suit individual customer needs.

Final Thoughts

Aluminium doors are no longer just an option, they are a requirement for trade installers looking to meet customer expectations in 2025. Mercury Glazing’s range of Smart and Aluspace systems provides solutions for every type of project, from bifold and sliding doors to internal partitions and stylish entrances.

By partnering with Mercury, trade professionals gain access to high-quality products, compliance support and marketing tools that make it easier to win more projects. Explore our full range of trade aluminium doors and discover how a strong supply partnership can grow your business.

Cliff House, Felixstowe

VIEW PROJECT

Foxhill House, Chester

VIEW PROJECT

University of Sussex, Brighton

VIEW PROJECT

Varndean College, Brighton

VIEW PROJECT

From sash windows to aluminium bifold doors, our high-quality products are engineered and manufactured right here in Britain. We work with fellow UK-operated companies, Spectus Window Systems, Smart Systems, and Jack Aluminium Systems, to deliver only the very best to our trade, commercial and residential customers.

FILL OUR CONTACT FORM

  • How much do French doors cost to install in the UK?

    The cost of installing French doors in the UK varies depending on the size, material, and design. At Mercury Glazing, we offer competitive pricing tailored to your specific needs. Please contact us for a personalised quote.

  • How to fit door handles?

    Fitting door handles can be a straightforward process. First, measure and mark the position on the door, drill the necessary holes, then attach the handle with screws. For detailed instructions or professional fitting services, feel free to reach out to us.

  • How to replace patio doors?

    Replacing patio doors involves removing the old doors, preparing the opening, and installing the new doors. It's a task best handled by professionals to ensure a perfect fit and functionality.

  • How much do patio doors cost?

    The cost of patio doors varies based on size, material, and design. Contact us at Mercury Glazing for a bespoke quote that matches your specific requirements.

  • How much are French doors?

    The price of French doors depends on the material, size, and design details. We offer a range of options to suit various budgets. Please get in touch for a tailored quote.

OUR ACCREDITATIONS

Why Aluminium Windows Are the Smart Choice for Trade Installers in 2025

Introduction

Aluminium windows have become one of the most in-demand products in the UK glazing market. For installers, builders, and trade resellers, offering aluminium alongside PVC-U is no longer optional, it is essential. Customers are increasingly requesting slimline profiles, improved thermal performance, and modern designs that complement both contemporary and heritage properties.

This article explores why aluminium windows should be at the heart of every trade installer’s offering, how they deliver value to both homeowners and businesses, and why Mercury Glazing is the trusted partner for high-quality trade aluminium windows.

Short Summary

Aluminium windows combine strength, durability, and style, making them a top choice for homeowners and commercial projects alike. For trade installers, they deliver excellent energy efficiency, meet compliance standards, and appeal to customers who want modern design with long-lasting performance. Mercury Glazing supports trade partners with expert manufacturing, technical advice, and tailored estimating services.

Why You Can Trust Us

Mercury Glazing has supplied the trade with bespoke aluminium windows for over 20 years. Our products are manufactured in the UK, fully tested for compliance, and designed to balance aesthetics with performance. We are a trusted supplier for trade professionals across residential, refurbishment, and commercial projects. Our experience in working with both installers and contractors gives us a clear understanding of what trade partners need: reliable supply, technical guidance, and products that customers love.

Growing Demand for Aluminium Windows

The UK market for aluminium windows has grown significantly in recent years, driven by both design trends and regulations. Homeowners increasingly prefer slim frames that maximise natural light, while architects specify aluminium for its clean lines and strength. According to the Construction Products Association (external link), demand for sustainable and energy-efficient building products continues to rise, with aluminium windows playing a key role in meeting these expectations.

For installers, this growth represents an opportunity to expand sales and meet the changing needs of their customer base.

Key Benefits of Aluminium Windows for Installers

1. Strength and Durability

Aluminium is a robust material that can withstand the elements without warping or cracking. Unlike timber, it does not require regular painting or treatment, and unlike some PVC-U profiles, it retains its shape in extreme weather. For installers, this means fewer call-backs and happier customers.

2. Energy Efficiency

Modern aluminium windows, such as those supplied by Mercury Glazing, incorporate advanced thermal break technology to achieve excellent energy ratings. This ensures compliance with Building Regulations and helps homeowners reduce energy bills. For trade professionals, offering energy-efficient solutions is a strong sales advantage.

3. Slimline Aesthetics

Customers love the slim sightlines aluminium allows. More glass and less frame creates brighter interiors and enhances kerb appeal. For installers, being able to meet this design preference increases conversion rates.

4. Versatility in Design

From casement and tilt-and-turn windows to heritage windows, aluminium can be fabricated to suit a wide variety of projects. Trade partners can supply solutions that fit both modern developments and conservation projects, helping them win a broader range of contracts.

5. Low Maintenance Appeal

Aluminium windows require minimal upkeep, which is a strong selling point for busy homeowners and commercial clients. Installers benefit because low-maintenance products are easier to promote and deliver long-term customer satisfaction.

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Meeting Compliance and Security Standards

Security and compliance are at the heart of modern glazing. Mercury’s aluminium windows are tested to meet PAS 24 standards and comply with Approved Document Q. For installers, this ensures that the products supplied meet the latest building regulations and provide peace of mind for customers.

Compliance is not just about meeting minimum standards, it is also about creating trust. Installers who supply windows with proven security and performance credentials are more likely to secure repeat business and referrals

Aluminium Windows in Heritage Projects

Heritage and listed properties present unique challenges for installers. Many conservation areas require windows that replicate traditional designs while delivering modern performance. Mercury’s aluminium heritage windows are designed specifically for this purpose, combining slim steel-like profiles with modern thermal efficiency.

This allows trade partners to meet planning requirements and offer customers a product that blends seamlessly with period architecture.

Commercial and Residential Opportunities

Aluminium windows are not just for homeowners. They are widely specified in commercial projects including offices, schools, and retail developments. For trade installers, this opens the door to larger contracts and ongoing supply agreements. Mercury’s ability to manufacture bespoke solutions means trade partners can meet the needs of both sectors with confidence.

Why Trade Partners Choose Mercury Glazing

Partnering with Mercury Glazing means more than just access to quality aluminium windows. Our trade partners benefit from:

  • Estimating support for accurate project pricing

  • Professional brochures and showroom materials

  • Technical advice on compliance and installation

  • UK-made products with reliable lead times

  • A proven track record of supporting installers and contractors

For details on becoming a partner, visit our Trade Partner page.

Sustainability and Aluminium Windows

Sustainability is an increasingly important factor in construction. Aluminium is 100% recyclable and retains its properties indefinitely, making it one of the most sustainable materials for window fabrication. With the UK Green Building Council highlighting the urgent need for sustainable solutions, aluminium windows provide installers with a product that appeals to environmentally conscious clients.

This is particularly valuable when bidding for projects where sustainability is a key decision factor.

Common Questions from Customers

Trade installers often encounter similar questions when discussing aluminium windows with customers. Some of the most frequent include:

  • Are aluminium windows more expensive than PVC-U?
     Aluminium is typically a premium product, but the long lifespan and performance often justify the investment.

  • How long do aluminium windows last?
     With proper installation, they can last 40 years or more with minimal maintenance.

  • Do aluminium windows suit traditional homes?
     Yes, especially when using heritage-style profiles designed to replicate steel or timber.

By preparing clear answers to these questions, installers can build customer confidence and close sales more effectively.

Final Thoughts

For trade installers in 2025, aluminium windows represent a must-have product. They combine style, strength, and compliance with the sustainability and energy efficiency that modern customers demand. Mercury Glazing supports its trade partners with expert manufacturing, tailored advice, and marketing tools to help them win more projects.

If you are an installer looking to expand your offering, explore our full range of trade aluminium windows today.

Cliff House, Felixstowe

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Foxhill House, Chester

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University of Sussex, Brighton

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Varndean College, Brighton

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From sash windows to aluminium bifold doors, our high-quality products are engineered and manufactured right here in Britain. We work with fellow UK-operated companies, Spectus Window Systems, Smart Systems, and Jack Aluminium Systems, to deliver only the very best to our trade, commercial and residential customers.

FILL OUR CONTACT FORM

  • How much do French doors cost to install in the UK?

    The cost of installing French doors in the UK varies depending on the size, material, and design. At Mercury Glazing, we offer competitive pricing tailored to your specific needs. Please contact us for a personalised quote.

  • How to fit door handles?

    Fitting door handles can be a straightforward process. First, measure and mark the position on the door, drill the necessary holes, then attach the handle with screws. For detailed instructions or professional fitting services, feel free to reach out to us.

  • How to replace patio doors?

    Replacing patio doors involves removing the old doors, preparing the opening, and installing the new doors. It's a task best handled by professionals to ensure a perfect fit and functionality.

  • How much do patio doors cost?

    The cost of patio doors varies based on size, material, and design. Contact us at Mercury Glazing for a bespoke quote that matches your specific requirements.

  • How much are French doors?

    The price of French doors depends on the material, size, and design details. We offer a range of options to suit various budgets. Please get in touch for a tailored quote.

OUR ACCREDITATIONS

How Mercury’s Trade Partner Portal Will Help Installers Win More Projects

Introduction

For trade installers, having the right supplier partnership can be the difference between securing a project and losing out to a competitor. Customers expect speed, accuracy, and high-quality information before they make a purchase decision. That is why Mercury Glazing are developing its dedicated Trade Partner Portal, a one-stop resource designed to help window and door installers grow their businesses, improve customer confidence, and work more efficiently.

Short Summary

The Mercury Trade Partner Portal will give installers access to exclusive support, including sales brochures, technical guides, estimating assistance, and showroom tools. It helps trade professionals present products with confidence, respond quickly to customer enquiries, and stand out in a competitive market.

Why You Can Trust Us

Mercury Glazing has been manufacturing and supplying bespoke aluminium and PVC-U windows and doors for over 20 years. We work closely with trade installers, builders, and commercial contractors across the UK. Our products are British-made, fully tested for compliance, and designed to meet the needs of both modern and heritage projects. By combining hands-on experience with a strong reputation in the glazing industry, we provide trusted support that helps our partners deliver the best results to their clients.

The Role of a Trade Partner Portal

A dedicated trade portal is more than just a login page. It is a business development tool that strengthens the relationship between suppliers and installers. For Mercury Glazing partners, the portal provides everything needed to manage client enquiries, prepare accurate quotations, and showcase premium products.

When installers join the scheme, they are not just buying windows and doors, they are gaining access to a suite of resources designed to help them succeed. This includes marketing assets, technical information, and account management support.

Tools That Make Quoting Easier

One of the most time-consuming parts of any installer’s role is preparing customer quotes. Accuracy is essential because an under-estimated project can reduce profits, while an over-estimated one risks losing the sale. The Mercury Trade Portal helps eliminate these problems by offering tailored estimating support.

Our team works with trade partners to ensure they can provide accurate pricing for products such as aluminium windows and aluminium doors. This not only speeds up the process but also gives customers confidence that they are receiving a fair and transparent price.

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Professional Sales Brochures and Marketing Support

Customers often make decisions based on how products are presented. That is why high-quality brochures and marketing materials are a core feature of the portal. Trade partners can access sales brochures that have been designed to showcase the performance, aesthetics, and energy efficiency of Mercury’s product range.

These resources are not only useful for direct sales conversations but also for use in showrooms, at trade fairs, or as part of digital marketing. By presenting products in a professional way, installers can improve conversion rates and create a stronger brand image.

Technical Support When You Need It

Even experienced installers encounter technical challenges. Whether it is meeting PAS 24 compliance, understanding Building Regulations, or confirming installation requirements, the Mercury team provides direct technical support through the partner scheme.

This guidance helps trade partners reduce errors on-site, complete projects to a higher standard, and ensure compliance with regulations such as Approved Document Q. The result is peace of mind for both installers and their clients.

Showroom and Display Support

For installers with showrooms, Mercury offers additional tools to create impactful displays. A well-designed showroom can significantly influence a homeowner’s decision to purchase. Our team provides advice on layout, product presentation, and the best way to highlight the benefits of aluminium and PVC-U products.

This extends to supplying display samples that allow customers to see and feel the quality of Mercury’s craftsmanship before making a decision.

Competitive Advantage for Installers

The glazing market is highly competitive, and customers are increasingly looking for suppliers who can combine product quality with excellent service. By using the Trade Portal, installers gain a competitive edge. They are better equipped to respond quickly to enquiries, demonstrate expertise, and build trust with customers.

Features like tailored estimating, professional brochures, and technical support allow smaller installers to compete with larger companies on an equal footing.

A Partnership That Goes Beyond Supply

Mercury Glazing does not just supply products, we build long-term partnerships with our trade clients. This means investing in tools and services that help installers grow their businesses. The Trade Portal is one example of how we go beyond supply to provide genuine support.

By working with Mercury, trade partners also gain access to sustainable products that are energy-efficient and designed for modern building standards. With homeowners placing greater emphasis on eco-friendly solutions, being able to supply products that meet these expectations is a powerful selling point. For context, the UK Green Building Council reports that demand for sustainable building products continues to grow year on year.

Key Benefits of the Mercury Trade Partner Portal

To summarise, here are the core advantages trade partners can expect:

  • Access to professional brochures and marketing resources

  • Estimating support for accurate customer quotations

  • Technical guidance on compliance and installation

  • Showroom and display advice

  • Stronger customer confidence and sales conversion rates

  • A trusted supply partnership with an experienced manufacturer

How to Join the Partner Scheme

Becoming a Mercury trade partner is straightforward. Installers, builders, and resellers can apply for access to the portal via the Mercury Partner page. Once approved, they will receive login details and immediate access to the resources outlined above.

Our team will also work directly with new partners to provide onboarding support, ensuring they know how to make the most of the portal.

Final Thoughts

For trade professionals, success in the glazing industry depends on more than just product supply. Customers expect expertise, transparency, and professionalism at every stage of their journey. Mercury Glazing’s Trade Partner Portal has been designed to meet these expectations, giving installers the tools they need to win more projects, build stronger client relationships, and grow their businesses with confidence.

If you are an installer looking to gain a competitive edge, explore our Trade Partner scheme today.

Cliff House, Felixstowe

VIEW PROJECT

Foxhill House, Chester

VIEW PROJECT

University of Sussex, Brighton

VIEW PROJECT

Varndean College, Brighton

VIEW PROJECT

From sash windows to aluminium bifold doors, our high-quality products are engineered and manufactured right here in Britain. We work with fellow UK-operated companies, Spectus Window Systems, Smart Systems, and Jack Aluminium Systems, to deliver only the very best to our trade, commercial and residential customers.

FILL OUR CONTACT FORM

  • How much do French doors cost to install in the UK?

    The cost of installing French doors in the UK varies depending on the size, material, and design. At Mercury Glazing, we offer competitive pricing tailored to your specific needs. Please contact us for a personalised quote.

  • How to fit door handles?

    Fitting door handles can be a straightforward process. First, measure and mark the position on the door, drill the necessary holes, then attach the handle with screws. For detailed instructions or professional fitting services, feel free to reach out to us.

  • How to replace patio doors?

    Replacing patio doors involves removing the old doors, preparing the opening, and installing the new doors. It's a task best handled by professionals to ensure a perfect fit and functionality.

  • How much do patio doors cost?

    The cost of patio doors varies based on size, material, and design. Contact us at Mercury Glazing for a bespoke quote that matches your specific requirements.

  • How much are French doors?

    The price of French doors depends on the material, size, and design details. We offer a range of options to suit various budgets. Please get in touch for a tailored quote.

OUR ACCREDITATIONS

Made for Trade: Vertical Sliding Windows with Flexible Lead Times and Tailored Options

The Trade Advantage: Lead Times You Can Count On

Installers and specifiers working to tight timelines need suppliers who deliver – not excuses. Mercury Glazing’s trade vertical sliding windows are manufactured entirely in-house, giving you complete confidence in both product quality and delivery turnaround. With a standard lead time of just two weeks, they’re a smart choice for time-sensitive contracts, restricted access sites, or volume-based projects.

To meet rising demand from trade customers, Mercury has expanded its factory operations – a strategic move that increases output without compromising on craftsmanship. Unlike mass producers or third-party drop shippers, Mercury oversees every stage of production, offering more accurate lead times, fewer delays, and greater control.

This commitment to service-led manufacturing means your schedule stays on track, whether you’re sourcing five units or managing a full-site rollout. You can explore the full trade offering here via Mercury’s trade vertical sliding sash windows page.

“In this industry, timing is everything. That’s why we’ve invested heavily in production capacity to offer reliable lead times without cutting corners. It’s not about churning out volume – it’s about doing things properly and supporting our trade customers every step of the way.”  – Martin Halford, Director

The Craftsman Range: Timber-Look Without Timber Hassle

For heritage-sensitive projects, Mercury’s Craftsman vertical sliding sash windows offer the authentic look of traditional timber without the ongoing maintenance. Designed to meet the aesthetic demands of conservation zones, this slimline range replicates original Georgian and Victorian profiles while delivering excellent energy performance and modern functionality.

Approved for use in listed settings such as the Royal Crescent in Bath, the Craftsman sash is a proven solution for installers working on sensitive sites. From deep bottom rails to putty-line detailing, it’s built to meet planning expectations where authenticity matters most. Unlike off-the-shelf alternatives, these units are crafted in-house for tighter control over quality and consistency.

You can explore the Craftsman collection in more detail via Mercury’s dedicated product page: Craftsman sash windows.

PVC-U Vertical Sliders: Performance Meets Affordability

For trade customers balancing cost and compliance, Mercury’s PVC-U vertical sliding sash windows provide a reliable, high-performance alternative to timber. With A-rated energy efficiency, run-through horns, and a wide choice of foiled finishes, they offer a traditional appearance with modern-day practicality.

These PVC-U sliders are manufactured to the same exacting standards as the aluminium and Craftsman ranges, giving trade customers a robust, versatile option for new-build or refurbishment projects. With slim profiles and authentic detailing, they’re also accepted in many conservation areas, offering a credible solution at a more accessible price point.

Discover the full product specification and options here: PVC-U vertical sliders.

Colour and Hardware Options to Suit Every Site

Whether your client is after subtle heritage tones or bold contemporary styling, Mercury’s trade vertical sliding windows are available in a wide selection of RAL colours, foils, and hardware finishes. Georgian bars, run-through horns, and deep bottom rails can all be customised to match regional design expectations or replicate existing units.

Mercury’s in-house production allows for bespoke configuration without the long delays often associated with custom orders. Whether it’s a period restoration or a prestige new-build, the ability to match design details precisely is a major advantage for installers looking to secure planning approval and client satisfaction.

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Built Around Trade: Total Flexibility Without Compromise

Mercury’s service model has always been built around the needs of trade professionals. Whether you’re managing a full property renovation or replacing a single unit, the flexibility to customise every element – from sash style and glazing to finish and delivery – makes a real difference.

Unlike many vertical sliding sash suppliers who buy in or drop ship from third-party manufacturers, Mercury fabricates every unit in-house. This allows trade customers to choose from a wide selection of styles and configurations without losing time to third-party lead times or unclear specifications. You get a direct line to production, technical support, and estimating assistance from day one.

If you’re specifying trade vertical sliding windows for a tight deadline, conservation zone, or listed building retrofit, this kind of responsiveness matters. Mercury’s full trade support offer is detailed here: Mercury Trade Sashes

Why Trade Customers Trust Mercury

Mercury has always been a trusted name in the trade because they understand the value of partnership. It’s not just about delivering a box of frames – it’s about supporting every part of your process, from initial quote through to final installation. That includes helping you get the right specs for planning officers, offering technical insight where needed, and making sure your delivery arrives on time and in full.

The in-house manufacturing model means you’re not left chasing after missing parts or fielding awkward questions from clients. Mercury’s control over quality, compliance, and aesthetics ensures you can install with confidence, especially when dealing with listed buildings or historic sites.

In fact, Historic England outlines the importance of careful planning and specification when retrofitting windows in period buildings – especially where heritage character must be preserved alongside improved performance. Mercury’s product approach aligns directly with this guidance, offering windows that meet both aesthetic and energy efficiency goals.

Supporting a Growing Market with Trade-First Insight

The demand for traditional sash-style products remains strong, with conservation-led planning rules and design-conscious homeowners driving long-term growth. According to a recent market report on windows and doors in Europe, heritage-style window systems – particularly those with improved thermal performance – are a growing priority for both developers and contractors.

Mercury has responded not just by expanding capacity but by refining its offer to support the evolving needs of trade professionals. That includes ongoing investment in manufacturing, expansion of the Craftsman range, and maintaining clear, realistic lead times even in high-pressure build environments.

If your customers expect style, performance, and precision, Mercury Glazing delivers – without compromise. Learn more about the vertical sliding window options available to trade customers and see why installers nationwide choose Mercury for heritage window supply.

Cliff House, Felixstowe

VIEW PROJECT

Foxhill House, Chester

VIEW PROJECT

University of Sussex, Brighton

VIEW PROJECT

Varndean College, Brighton

VIEW PROJECT

From sash windows to aluminium bifold doors, our high-quality products are engineered and manufactured right here in Britain. We work with fellow UK-operated companies, Spectus Window Systems, Smart Systems, and Jack Aluminium Systems, to deliver only the very best to our trade, commercial and residential customers.

FILL OUR CONTACT FORM

  • How much do French doors cost to install in the UK?

    The cost of installing French doors in the UK varies depending on the size, material, and design. At Mercury Glazing, we offer competitive pricing tailored to your specific needs. Please contact us for a personalised quote.

  • How to fit door handles?

    Fitting door handles can be a straightforward process. First, measure and mark the position on the door, drill the necessary holes, then attach the handle with screws. For detailed instructions or professional fitting services, feel free to reach out to us.

  • How to replace patio doors?

    Replacing patio doors involves removing the old doors, preparing the opening, and installing the new doors. It's a task best handled by professionals to ensure a perfect fit and functionality.

  • How much do patio doors cost?

    The cost of patio doors varies based on size, material, and design. Contact us at Mercury Glazing for a bespoke quote that matches your specific requirements.

  • How much are French doors?

    The price of French doors depends on the material, size, and design details. We offer a range of options to suit various budgets. Please get in touch for a tailored quote.

OUR ACCREDITATIONS

Trusted Heritage Windows for Conservation and Trade Projects

Aluminium Heritage Windows Designed for Conservation Compliance and Trade Confidence

When specifying windows for conservation zones or heritage-style builds, precision matters. The Alitherm Heritage aluminium range delivers the authentic sightlines, elegant proportions and glazing flexibility required for planning consent – all while meeting modern performance standards.

At Mercury Glazing, we don’t buy in and re-sell: we manufacture Alitherm Heritage aluminium windows in-house at our UK facility. That means total control over quality, design, lead times, and service – backed by expert support for trade professionals. With turnaround times under four weeks, we’re the partner installers rely on to keep heritage projects moving.

Whether you’re restoring a listed building or creating period-style extensions in conservation areas, our heritage window systems combine timeless looks with today’s performance standards.

[Click here to view Heritage Windows for Trade Customers]

What Are Heritage Windows – and Why Do They Matter in 2025?

Heritage windows are designed to replicate the traditional features of period fenestration – from slender frames and putty-like detailing to flush joints and accurate glazing bars. They’re often required in conservation areas, listed buildings, or anywhere planners expect visual continuity with original architecture.

In 2025, energy standards and retrofit regulations have made heritage compliance more complex. Specifiers now need to balance visual authenticity with thermal efficiency and security – all while staying within the strict limits of conservation planning.

That’s why solutions like Alitherm Heritage are in high demand. They allow for modern aluminium performance – such as thermally broken frames and secure multipoint locking – in a form that’s virtually indistinguishable from steel or timber originals. Historic England confirms that well-designed upgrades can reduce heat loss without compromising historic value – as long as proportions and sightlines are respected.

Conservation Area Ready: The Case for Alitherm Heritage Aluminium

Alitherm Heritage windows have been developed specifically for use in period-sensitive settings. Their slimline aluminium construction closely mimics the proportions of traditional steel and timber windows, making them ideal for sensitive refurbishments and conservation area approvals.

In cities like Bristol, planning permission for conservation areas requires care when upgrading fenestration. Visual impact is assessed alongside performance, meaning installers must choose systems that offer both.

“When planning rules are tight, performance can’t come at the expense of design. That’s where Alitherm Heritage delivers – and we manufacture it in-house to exact spec,” says Martin Halford, Director at Mercury Glazing.

By combining heritage-accurate detailing with modern compliance, Alitherm Heritage has become a preferred choice for contractors navigating conservation constraints.

For Trade: Manufactured in Britain, Supported by Experts

Trade professionals know that sourcing matters – and working with a true UK manufacturer like Mercury Glazing can make all the difference. Unlike suppliers who drop-ship or import finished frames, we fabricate every Alitherm Heritage window in-house, ensuring consistent quality, faster lead times, and expert control over the final product.

We work directly with installers, contractors, architects and specifiers to ensure each heritage window project is delivered to spec – and on time. Whether you’re managing a multi-property retrofit or a single bespoke restoration, we offer:

  • Detailed technical drawings and specification advice

  • Accurate quoting with fast turnaround

  • Advice on conservation zone planning considerations

  • Product samples, colour options and glazing configurations

With our standard lead time of under four weeks, Mercury Glazing is the reliable partner that trade professionals trust for heritage aluminium windows. We don’t move on or drop out – we stay involved, offering support from quote to completion. That’s the benefit of working with a manufacturer, not just a seller.

Explore our dedicated heritage aluminium windows for trade page to see how we support your next project.

What Installers and Contractors Gain from a True UK Manufacturer

Choosing a UK manufacturer isn’t just about geography – it’s about peace of mind. Mercury Glazing offers trade partners direct access to the people who design, build, and test the windows themselves. There’s no middleman, no confusion, and no surprises.

We understand the challenges contractors face, from planning delays and delivery hold-ups to incorrect specifications and hard-to-reach support. That’s why we’ve built our process around what installers need most:

  • Precise product knowledge from the first conversation

  • Configurations tailored to your build method

  • Support with conservation-friendly options and approvals

  • Shorter lead times without compromising quality

Buying from a distributor may seem quicker – until the spec changes or something’s missing. Working with Mercury Glazing means fewer site delays, more accurate installations, and a stronger reputation with your client.

Our in-house manufacturing also means better quality control and long-term consistency – especially when working on phased heritage refurbishments or larger housing projects.

To see how our aluminium heritage windows align with homeowner expectations, visit our homeowner Alitherm Heritage range.

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Planning Permission in Conservation Areas: What to Know in 2025

Getting planning consent in a conservation area requires more than just high-quality windows – it requires windows that look right, perform well, and respect the character of the building.

Mercury’s Alitherm Heritage windows are designed with conservation in mind. They replicate the key visual features expected by planning officers:

  • Narrow sightlines

  • Traditional framing proportions

  • Optional glazing bars and horizontal rail options

  • Colour-matched powder-coated finishes

These design elements help meet local planning authority expectations for heritage-sensitive projects. In many cases, including across Bristol’s conservation areas, this level of visual compatibility is essential for fast-track approval.

Our team understands the technical and visual requirements involved and can help advise on configurations that balance energy efficiency with aesthetic integrity – all within current 2025 planning frameworks.

Why Alitherm Heritage Wins on Both Aesthetics and Performance

Heritage window projects used to force a choice: historic accuracy or modern performance. With the Alitherm Heritage system, there’s no need to compromise. This advanced aluminium profile combines ultra-slim styling with the thermal and security standards demanded by today’s building regulations.

Each frame is thermally broken to reduce heat transfer and achieve excellent U-values. Compatible with both double and single glazing, it offers flexibility depending on conservation requirements and project scope. The system also meets PAS 24 standards for security when required.

Visually, Alitherm Heritage recreates the look of original steel or timber windows through:

  • Ovolo detailing

  • Stepped sashes

  • Authentic transom alignment

  • Heritage-style handles and stays

That makes it ideal for listed buildings, barn conversions, and character-led refurbishments where maintaining external appearance is essential – especially when aligned with retrofit energy-saving measures supported by Historic England.

It’s this balance of appearance, energy performance and durability that sets Alitherm Heritage apart in the trade market.

“We’ve seen a real increase in demand from trade customers working on conservation-led projects who are tired of delays and mismatched deliveries. Because we manufacture everything in-house, we can get Alitherm Heritage windows out quickly – and right first time.” – Andy Miller, Head of Sales, Mercury Glazing

Faster Turnaround Without Compromising Quality

Lead times can make or break a heritage window project. Mercury Glazing offers under four-week turnaround on Alitherm Heritage aluminium windows – without cutting corners.

Our streamlined in-house manufacturing allows for:

  • Faster start-to-site delivery

  • Tighter quality control

  • Real-time updates on production and availability

  • Swift resolution of spec changes

This flexibility is especially valuable when dealing with sensitive planning deadlines or phasing constraints on multi-unit refurbishments.

Because everything is built under one roof, we don’t rely on offshore imports, third-party factories, or untracked shipping delays. You get what you’ve ordered – when you need it – from a team that understands your project.

For more on our heritage window supply process, visit the dedicated trade page.

Cliff House, Felixstowe

VIEW PROJECT

Foxhill House, Chester

VIEW PROJECT

University of Sussex, Brighton

VIEW PROJECT

Varndean College, Brighton

VIEW PROJECT

From sash windows to aluminium bifold doors, our high-quality products are engineered and manufactured right here in Britain. We work with fellow UK-operated companies, Spectus Window Systems, Smart Systems, and Jack Aluminium Systems, to deliver only the very best to our trade, commercial and residential customers.

FILL OUR CONTACT FORM

  • How much do French doors cost to install in the UK?

    The cost of installing French doors in the UK varies depending on the size, material, and design. At Mercury Glazing, we offer competitive pricing tailored to your specific needs. Please contact us for a personalised quote.

  • How to fit door handles?

    Fitting door handles can be a straightforward process. First, measure and mark the position on the door, drill the necessary holes, then attach the handle with screws. For detailed instructions or professional fitting services, feel free to reach out to us.

  • How to replace patio doors?

    Replacing patio doors involves removing the old doors, preparing the opening, and installing the new doors. It's a task best handled by professionals to ensure a perfect fit and functionality.

  • How much do patio doors cost?

    The cost of patio doors varies based on size, material, and design. Contact us at Mercury Glazing for a bespoke quote that matches your specific requirements.

  • How much are French doors?

    The price of French doors depends on the material, size, and design details. We offer a range of options to suit various budgets. Please get in touch for a tailored quote.

OUR ACCREDITATIONS

Supplying PAS 24 Windows for Trade: Stay Compliant, Win More Work

Understanding PAS 24: What Trade Installers Need to Know

PAS 24 is the UK’s recognised benchmark for enhanced security performance in windows and doors. Developed by the British Standards Institution (BSI), the specification outlines rigorous testing methods to assess a product’s resistance to physical attacks – from forced entry to manipulation of hardware.

For trade customers, understanding PAS 24 is not optional. As explained in the UK government’s Building Regulations Part Q, PAS 24 compliance is a legal requirement for new-build homes and many change-of-use properties. It is also becoming a de facto standard in renovations and social housing upgrades, where insurers and developers increasingly demand proof of certified performance.

Unlike general security claims, PAS 24 certification provides third-party validation of the complete window unit – frame, hardware and glazing – not just individual components. For trade partners, this offers a tangible selling point: reliable security backed by nationally recognised compliance.

Why PAS 24 Certified Windows Give You a Commercial Edge

For trade installers and fabricators, offering PAS 24 certified aluminium windows isn’t just a regulatory necessity – it’s a way to stand out in a crowded market. These windows meet the security requirements set out in Approved Document Q of the UK Building Regulations, ensuring they’re suitable for use in new builds and change-of-use refurbishments where enhanced resistance to burglary is required.

What sets PAS 24 apart is the level of independent testing involved. Windows must withstand a series of simulated break-in attempts, including impact, manipulation, and forced entry tests. By supplying windows that meet this standard, you’re not just complying with regulations – you’re providing real peace of mind to developers, contractors, and ultimately, homeowners.

Mercury’s aluminium window range, including our heritage window system, is designed to meet PAS 24 performance requirements while retaining the slim sightlines and architectural integrity often demanded by planning officers in conservation zones.

PAS 24 certification also plays a role in insurance and resale value. When windows are demonstrably secure, they contribute to lower home insurance premiums and add assurance to property purchasers. In a compliance-driven market, PAS 24 windows help you deliver both quality and reassurance.

What PAS 24 Testing Really Involves

PAS 24 testing is far more than a box-ticking exercise. Windows and doors must undergo a sequence of rigorous physical challenges designed to simulate forced entry using real-world burglary methods. The process includes:

  • Manual attack testing: Attempting entry using screwdrivers, crowbars and pliers
  • Mechanical loading: Applying force to locks, hinges and fixings to check structural integrity
  • Impact testing: Striking key areas with a weighted ram to test resistance
  • Glazing security assessment: Checking how easily glass or beading can be removed
  • Hardware manipulation: Trying to force locks or open sashes from outside

Products must pass as a complete unit, not as standalone components. This means any changes – to the frame, the handle or the locks – can invalidate the certification if not retested.

As noted in recent security guidance from the NPSA, consistency and whole-system performance are what matter. For trade professionals, working with manufacturers like Mercury Glazing ensures peace of mind – every unit is fabricated and assembled with compliance in mind, so you’re not left guessing if your order meets spec.

Built for Regulation: Understanding PAS 24

PAS 24 is a security performance standard created by the British Standards Institution (BSI) to assess how well windows and doors withstand forced entry. While often referred to in the trade simply as “PAS 24,” it’s formally linked to the requirements in Approved Document Q of the Building Regulations, which states that all accessible doors and windows in new dwellings must resist physical attack by a burglar.

PAS 24 testing is rigorous. It includes impact testing, manual intervention with tools, and mechanical load tests, ensuring that products can withstand real-world burglary attempts. Installers and developers working on compliant new builds or permitted refurbishments need certainty that what they install is fully tested – not just part-compliant on paper.

This is where Mercury Glazing stands apart. Our aluminium window systems, including slimline and heritage ranges, are designed with PAS 24 certification in mind. Not only does this keep you compliant, it makes specification easier for M&E consultants, site managers, and architects alike.

For full details, you can view the official government guidance in Approved Document Q.

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Designed to Comply – Without Compromising Style

In many sensitive or conservation-led developments, there’s a tension between security compliance and planning constraints. Fortunately, Mercury’s PAS 24 certified aluminium products – especially those in our heritage window collection – bridge this gap.

Approved for use in a variety of conservation settings, our heritage windows preserve traditional aesthetics while incorporating hidden security features. Slim profiles, authentic sightlines, and heritage-style hardware mean that planners see historical continuity, while contractors get the certification they need.

One of the key benefits of partnering with a manufacturer like Mercury is that we don’t retrofit security features as an afterthought. Instead, PAS 24 is built into the design from the outset – ensuring you never have to sacrifice compliance for appearance.

As Martin Halford, Director at Mercury Glazing, explains:
 “We work closely with trade clients to recommend the most cost-effective route to PAS 24 compliance, without adding unnecessary manufacturing complexity or delay. That’s the advantage of working with a true fabricator, not a drop-shipper.”

A Fabricator’s Edge: PAS 24 from a UK Manufacturer

One of the reasons Mercury Glazing has earned the trust of trade professionals is our ability to manufacture in-house. This means you’re not relying on third-party importers or systems companies – you’re working with a UK-based fabricator who can provide reliable, fully certified PAS 24 windows direct from source.

When dealing with time-sensitive projects, clarity matters. Mercury’s ability to advise on compliant specs, manufacture to order, and turn around bespoke aluminium windows within tight timeframes gives our partners a genuine edge.

The Smart Visofold 1000 aluminium bifold doors and our heritage-style window systems are both available with PAS 24 enhancements, giving installers flexibility across a wide range of projects. Whether your client needs secure access doors or discreet sash replacements, Mercury’s full control over the process ensures consistent standards across every opening.

Beyond security, all PAS 24 products must pass robustness and durability benchmarks, making them ideal for both residential and light commercial installations. And because we design and test our systems ourselves, our team can offer expert guidance to help you meet current NPSA guidance and emerging security standards.

Helping You Stay Ahead of Spec Updates

Trade professionals face constant changes in building regulations and security specifications, especially when working on large-scale residential projects. Staying on top of what’s required – and what’s coming next – isn’t always easy. That’s where Mercury Glazing steps in. We keep our trade partners informed of key updates, including revisions to Approved Document Q and emerging guidance from security authorities such as the National Protective Security Authority (NPSA).

Whether you’re responding to a client’s new-build brief or adapting to retrofit security standards, we can help you select the most appropriate PAS 24 compliant aluminium windows for the job. Our technical team understands not just product performance – but the pressure of getting it right first time. If you need guidance balancing compliance with cost, we’ll guide you through the most effective solution to meet spec and save time on site.

Meeting Client Demands Without Delay

No matter how secure or stylish a window is, it needs to arrive on time. That’s why Mercury has invested in our in-house manufacturing and dispatch systems – so you can rely on lead times, even when demand is high.

All our trade aluminium windows are built at our Gloucester facility, giving us total control over quality and production schedules. PAS 24 upgrades are available across a wide selection of product lines, including heritage windows and our Smart Visofold 1000 aluminium bifold doors, making it easier to specify a fully secure, regulation-compliant glazing package.

Unlike third-party resellers or drop shippers, we don’t depend on someone else’s timelines. You get accurate quotes, honest lead time forecasts, and a technical team who will make sure your delivery matches your install schedule.

As Martin Halford, Director, puts it:
“We’re not here to sell boxes. We’re here to make life easier for installers who care about performance and deadlines – and do it with products we actually manufacture ourselves.”

Let’s Talk Compliance and Competitive Advantage

Being able to supply PAS 24 windows isn’t just about meeting a standard – it’s about staying competitive, winning better work, and building long-term client trust. With Mercury Glazing as your manufacturing partner, you’ll have access to compliant products, trade-first lead times, and genuine support when you need it most.

We’ll help you specify, price and deliver the right PAS 24 solution for your next project. Whether you’re working with developers, housing associations, or homeowners who demand assurance, our team is here to support you.

Explore our trade aluminium windows or heritage PAS 24 options today – or get in touch to discuss your next installation.

Cliff House, Felixstowe

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Foxhill House, Chester

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University of Sussex, Brighton

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Varndean College, Brighton

VIEW PROJECT

From sash windows to aluminium bifold doors, our high-quality products are engineered and manufactured right here in Britain. We work with fellow UK-operated companies, Spectus Window Systems, Smart Systems, and Jack Aluminium Systems, to deliver only the very best to our trade, commercial and residential customers.

FILL OUR CONTACT FORM

  • How much do French doors cost to install in the UK?

    The cost of installing French doors in the UK varies depending on the size, material, and design. At Mercury Glazing, we offer competitive pricing tailored to your specific needs. Please contact us for a personalised quote.

  • How to fit door handles?

    Fitting door handles can be a straightforward process. First, measure and mark the position on the door, drill the necessary holes, then attach the handle with screws. For detailed instructions or professional fitting services, feel free to reach out to us.

  • How to replace patio doors?

    Replacing patio doors involves removing the old doors, preparing the opening, and installing the new doors. It's a task best handled by professionals to ensure a perfect fit and functionality.

  • How much do patio doors cost?

    The cost of patio doors varies based on size, material, and design. Contact us at Mercury Glazing for a bespoke quote that matches your specific requirements.

  • How much are French doors?

    The price of French doors depends on the material, size, and design details. We offer a range of options to suit various budgets. Please get in touch for a tailored quote.

OUR ACCREDITATIONS

Mercury makes waves in the USA

Specialist fabricator Mercury, in collaboration with Conservatory Craftsmen, has completed a spectacular aluminium new build project in North Kentucky, south of Cincinnati in the USA.

The 111 sqm home extension was designed to accommodate an indoor lush garden space complete with largescale waterfall pond, allowing the homeowner to grow bananas, citrus fruits and a variety of tropical plants. With such a generous glazing façade needed, the choice of products specified was exacting to maximise light penetration.

Fabricated in-house by Gloucester-based Mercury, the extensive structure was manufactured from the innovative Smart Wall system for the main framework, featuring a combination of 100mm and 150mm sections. Reinforced with robust steel supports, the thermally broken system is designed to withstand extreme weather conditions and offers excellent thermal transmittance, ensuring both longevity and performance. The aluminium structure was powder coated in RAL9011 Satin black to complement the existing property.

The project’s windows, fabricated from the Alitherm 600 system, were used as inserts and in higher-level positions within the Smart Wall framework. The windows are designed to optimise thermal efficiency whilst their slim sightlines maximise light exposure, a crucial element for this project. The windows also incorporated sloping beads to effectively channel water away, which was important given the adverse weather conditions the region can experience.

A unique aspect of the project is the conservatory’s side wall, which stands over 4 metres high and is shared with the adjoining house. The design allows the second floor of the property to directly overlook the botanical garden, creating a seamless blend of an indoor and outdoor space.

The roof was manufactured by Roof Kits in Yatton, west of Bristol and was overseen by the Mercury team to ensure a seamless integration within the structure.

Throughout the project, Mercury’s experienced in-house commercial team collaborated closely with Conservatory Craftsmen to ensure all products were manufactured and shipped on time direct to site.

The completed project showcases the manufacturing expertise of the Mercury team.  Martin Halford, Director at Mercury, commented: “This was an exciting project to be involved in and the finished result is superb. The project ran seamlessly and is a testament to the calibre and dedication of the Mercury team.”

With installations across the USA, including New York, Florida, Minnesota, Arizona, California, Nevada, and now Kentucky, Mercury’s products are making waves internationally.

Cliff House, Felixstowe

VIEW PROJECT

Foxhill House, Chester

VIEW PROJECT

University of Sussex, Brighton

VIEW PROJECT

Varndean College, Brighton

VIEW PROJECT

From sash windows to aluminium bifold doors, our high-quality products are engineered and manufactured right here in Britain. We work with fellow UK-operated companies, Spectus Window Systems, Smart Systems, and Jack Aluminium Systems, to deliver only the very best to our trade, commercial and residential customers.

FILL OUR CONTACT FORM

  • How much do French doors cost to install in the UK?

    The cost of installing French doors in the UK varies depending on the size, material, and design. At Mercury Glazing, we offer competitive pricing tailored to your specific needs. Please contact us for a personalised quote.

  • How to fit door handles?

    Fitting door handles can be a straightforward process. First, measure and mark the position on the door, drill the necessary holes, then attach the handle with screws. For detailed instructions or professional fitting services, feel free to reach out to us.

  • How to replace patio doors?

    Replacing patio doors involves removing the old doors, preparing the opening, and installing the new doors. It's a task best handled by professionals to ensure a perfect fit and functionality.

  • How much do patio doors cost?

    The cost of patio doors varies based on size, material, and design. Contact us at Mercury Glazing for a bespoke quote that matches your specific requirements.

  • How much are French doors?

    The price of French doors depends on the material, size, and design details. We offer a range of options to suit various budgets. Please get in touch for a tailored quote.

OUR ACCREDITATIONS

DESIGN YOUR OWN DOOR TODAY

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DESIGN YOUR OWN DOOR TODAY

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Bradford Alvena 4

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Timmy Damian

Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.

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Bradford Alvena 2

Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.

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Bradford Alvena 3

Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.

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Bradford Alvena

Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.

Contact our team!

Whether you are refurbishing your residential property or looking to instil contemporary style in a commercial office, the team at Mercury Glazing prides itself on delivering premium quality windows and doors to your project. We’ll be with you every step of the way – it’s the Mercury difference! If you have any further questions or would like a quote please do not hesitate to contact us.

Mercury Glazing Supplies Ltd., Unit E1, Goodridge Business Park,
Goodridge Avenue, Gloucester, Gloucestershire, GL2 5EB

01452 383344

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