To obtain a FENSA certificate for your windows, ensure that the installation is carried out by a FENSA-registered company. Once the installation is complete, the FENSA-registered installer will register your installation with FENSA, who will then issue a certificate to you, confirming compliance with building regulations.

To obtain a FENSA certificate for your windows, ensure that the installation is carried out by a FENSA-registered company. Once the installation is complete, the FENSA-registered installer will register your installation with FENSA, who will then issue a certificate to you, confirming compliance with building regulations.