Double Glazed Windows and Doors | Mercury Glazing

Double Glazed Windows and Doors

Energy-efficient and stylish, our range of double glazed windows and doors suit both modern and traditional properties. Designed with practicality and security in mind, they’re a functional yet contemporary solution for any property or project.

Here at Mercury Glazing, we manufacture and supply a range of double glazed windows and doors with endless colour and style options to suit any property. 

We’ve been making home improvements simple and cost-effective since 2002. From our initial visit right through to installation, we take care of it all, making sure you’re 100% happy with the result. We’ll help you find a practical and appealing door or window solution, no matter how complex your project. 

Secure, draught-proof and built to last, our range of double glazed windows and doors are the perfect improvement for your commercial or domestic property. 

About Us

Double Glazed Doors

So, what are double glazed doors? Double glazed doors are integrated with two glass panels which are separated by an air gap, including a spacer and insulating gas. 

Investing in a double glazed door can have multiple benefits. If you’re looking to make your home more economical, double glazing is a perfect choice as it increases thermal retention reducing making your property more thermally efficient. Double glazing can also help reduce noise levels, diminishing sound waves before they enter your home or commercial property.

At Mercury Glazing, all of our double glazed doors are made right here in Britain, so you can rest assured they’re the best quality. Our professional installation service is quick and hassle-free with as minimal disruption to your day as possible. 

Whether you’re looking for a new front door for your residential property or a back door for your commercial building, we’ve got all of your needs covered with our fantastic range of double glazed doors. 

We know that no two properties are the same. That’s why we provide a variety of double glazed doors so that you can choose the perfect match. Better still, we’ll help you with that too! We’ll suggest the best colour schemes, styles and materials for your specific building, providing you with a fully bespoke double glazed door that’s right for you and right for your project.

Double Glazed Windows Designs

Looking for replacement double glazed windows? Here at Mercury Glazing, we manufacture a range of double glazed window designs. Here’s just some of the options we have on offer. 


Aluminium Double Glazed Windows

Engineered with modern and slim frames, our range of aluminium windows offers durability and maximises natural light intake. With a weather-resistant and energy-efficient design, our aluminium double glazed windows offer practicality for both the workplace and at home.

Combined with double glazing sealed units, our aluminium windows offer excellent thermal retention and are resilient to all weather conditions. Requiring very little maintenance, aluminium double glazed windows are an effortless solution. 

Boasting various benefits, aluminium windows modernise both the interior and exterior of your home providing optimal security and durability. They are also long-lasting with little maintenance required too

At Mercury Glazing, we manufacture a range of bespoke aluminium windows, including double glazed sash windows, check them out below!

Discover Our Aluminium Window Range 


PVC-u Double Glazed Windows

Cost-effective and made with leading double glazing technology, our range of PVC-u windows are the perfect solution for all properties. Made from long-lasting PVC-u, our windows are optimised by double glazing technology to keep your home or business warmer, safer and quieter. 

Eliminating draughts and minimising condensation, PVC-u windows are available in a wide range of colours, styles and finishes to match your property. 

A rated in efficiency, our PVC-u double glazed windows are a modern and aesthetically pleasing way of replacing failing timber or older PVC-u units. 

At Mercury Glazing, we offer a range of PVC-u fully welded vertical sliders and mechanically jointed vertical sliders. 

Browse our range of high-quality, cost-effective PVC-u double glazed windows below. 


Discover Our PVC-u Window Range 

What Are the Benefits of Double Glazed Windows and Doors?

Double glazed windows and doors are some of the most popular on the market today. They offer a range of benefits including:

  • Thermal retention 
  • Solar gain
  • Weatherproofing
  • Corrosion resistance
  • Reduction in noise
  • Reduction in condensation
  • Reduction in energy bills
  • Increase in property value
  • Robust design and theft-resistant

That’s just the technical stuff! They’re also:

  • Available in a wide range of designs
  • Available in numerous colours and materials
  • Cost-effective, offering longevity
  • Adaptable to a range of property types

Types of Double Glazed Doors 

From double glazed front doors to double glazed back doors, at Mercury Glazing we supply a range of doors to suit a variety of properties. Here are just some of the options we have to offer.


Aluminium Double Glazed Doors

Aluminium double glazed doors bring functionality and aesthetically pleasing style to your property. Our doors are engineered from resilient aluminium for a durable and low maintenance choice, providing security and peace of mind. 

Designed with a slim sturdy frame, aluminium double glazed doors are the perfect choice for a range of properties from modern to period buildings. Our aluminium doors can be ordered in a range of custom RAL colours to blend in, or stand out for optimum choice.

Heightened with energy efficiency, aluminium double glazed doors not only maximise natural light intake but help to reduce your carbon footprint too. 

At Mercury Glazing we manufacture a range of aluminium doors, including double glazed sliding patio doors and Bifold doors.

Aluminium double glazed doors can last up to 40 years and are extremely easy to clean and maintain, making them an effortless solution. 

Check out our range below!

Discover Our Aluminium Door Range


Smart Designer Double Glazed Doors

Our premium designer double glazed aluminium doors offer a bespoke range of styles and colours to suit any property. 

Integrated with a fully insulated door panel, weather bar and polyamide thermal barrier, our smart designer doors are some of the most insulated on the market. If you’re looking to reduce your energy consumption, our smart designer doors are the perfect solution for you. 

Robust and combined with the latest locking technology, our range of bespoke designer double glazed doors provide outstanding performance, optimal security and practicality.

Create your unique entrance with our designer door tool below! 

Discover Smart Designer Doors


Double Glazed Windows

Similarly to double glazed doors, double glazed windows are manufactured with two panels of glass, instead of a single panel. The two panels of glass are separated by a spacer bar to create an air gap which is filled with insulating Argon gas, increasing thermal retention. This slows down the movement of heat to reduce energy loss.

Double glazed windows are a great choice for reducing noise, absorbing sound energy and slowing down vibrations. 

Double glazing helps to reduce the amount of condensation on your windows, as the glass is not as cold as a single glazed panel. The air gap between the two panels allows the internal panel to be kept closer to room temperature, meaning no condensation is formed. 

EPC Rating

Key Benefits of Double Glazed Windows and Doors

Let’s take a look at the key benefits of double glazed doors and windows in further detail. 

Thermal Retention 

Double glazed doors and windows consist of a sealed unit made up of two glass panels which are separated by an air gap which is filled with the insulating gas, Argon, increasing thermal retention. By slowing down the movement of heat between the outdoors and your home, double glazing works to reduce energy loss. 


Double glazed doors and windows are built to be durable and strong, resisting even the harshest of weather conditions. 


A double glazed door or window has a long life span which ensures you have a good return on your investment.  


Double glazed doors and windows are suitable for a wide range of applications, including both commercial and residential properties, suiting both period and modern buildings. 

Double Glazed Window and Door Prices

The cost of a double glazed window or door depends on its size, and the style you opt for.  At Mercury Glazing, we always offer competitive prices coupled with window and door products that are bespoke and manufactured to your exacting standards.

For a free, no-obligation quote, contact us today at Mercury Glazing.

Replacement Double Glazed Windows and Doors

Looking for double glazed windows and doors? Here at Mercury Glazing, we provide the best double glazed windows and doors, tailoring our services to each and every client we have. 

We have grown to become one of the UK’s leading fabricators of windows and doors. Whatever your project, we can help. Delivering excellent customer service and high-quality products, we’ll support you every step of the way. 

See it for yourself! Take a look at our previous projects for some inspiration and to see the quality of work we do here at Mercury Glazing. 

Contact Us


Our Products

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

PVC-U Fully Welded Vertical Sliders

PVC-U Fully Welded Vertical Sliders

Find out more
PVC-U Mechanically Jointed Vertical Sliders

PVC-U Mechanically Jointed Vertical Sliders

Find out more
Smart Visofold Aluminium Bifold Doors

Smart Visofold Aluminium Bifold Doors

Find out more
Cortizo Aluminium Bifold Doors

Cortizo Aluminium Bifold Doors

Find out more
Cortizo 4700 Aluminium Patio Doors

Cortizo 4700 Aluminium Patio Doors

Find out more
Alitherm 300 Aluminium Windows

Alitherm 300 Aluminium Windows

Find out more
Alitherm Heritage 47 Aluminium Windows

Alitherm Heritage 47 Aluminium Windows

Find out more
Aluminium Sliding Sash Windows

Aluminium Sliding Sash Windows

Find out more

Contact Us

Have a query? For further information use our contact form below and a member of our team will get
in touch with you shortly. Alternatively, you can contact Mercury Glazing via phone or email.

01452 383344

    Your Name

    Email Address

    Phone Number


    Cortizo Jack Aluminium Systems Smart Architectural Aluminium Spectus Secured by Design