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Written by Kayleigh Shooter 23/09/2024

When Do You Need A FENSA Certificate?

We frequently get asked by customers if their builder will need to produce a FENSA certificate when installing our rooflights and roof windows, there seems to be confusion over what a FENSA is and its applications.

 

What Is FENSA?

FENSA stands for the ‘Fenestration Self-Assessment Scheme’ which was set up by the Glass and Glazing Federation (GGF) as a tool to self-certify compliance under Building Regulations without the need for a separate assessment from Building Control.

The FENSA register collates a list of accredited double glazing installers across England and Wales so that homeowners can ensure they are choosing a reputable and experienced home improvements company to undertake their works. Registered with the government, the FENSA register assures that the installer is professional, complies with building regulations and offers an insurance backed warranty, for peace of mind.

If your installer is not registered with FENSA any works that include replacing windows, doors and rooflights/roof windows will require you to obtain a certificate from Local Authority Building Control instead to demonstrate compliance to Building Regulations.

 

Does FENSA Apply To Rooflights?

The FENSA scheme does not apply to glass rooflights therefore it is not possible for a rooflight installer to provide a FENSA certificate to certify a rooflight that they have installed.

Rooflights can not be certified by a FENSA Certificate as they are typically installed on an upstand on a flat roof meaning that they are out of plane with the roof.

Therefore, when installing a rooflight, you will need to ensure compliance with Building Regulations as this is a legal requirement in England. Installing a rooflight entails altering the roof significantly to allow it to carry the extra weight of the product, meaning you typically will need to pursue Building Regulation Approval.

 

Does FENSA Apply To Roof Windows?

As opposed to a rooflight, a roof window is typically installed on a pitched tiled roof and in plane with the roofline (Meaning it sits flush with the tiles) therefore they can be certified with a FENSA certificate. Roof windows are required to comply with BS EN 14351-1 and they should be UKCA marked accordingly.

It is worth noting that FENSA certification can only apply if you are replacing an existing roof window; installation of a new roof window will require certification from Building Control to ensure that any structural changes to the roof and thermal performance meet current regulations.

FENSA also does not apply to conservatories, porches, commercial premises, new build properties or extensions. In all of these instances you are required to go through the Local Authority Building Control process.

 

Why Do I Need Building Control Approval?

Installing a rooflight or roof window will involve heavily modifying your existing roof to allow it to carry the additional weight of the product(s). Any rooflight that is installed will also need to prove that it has sufficient insulation against heat loss, otherwise it will not comply with Building Regulations.

Building Regulations, outlined by the English government, are in place to help protect the health and safety of people living in them therefore they must be adhered to, if they are not, this could lead to costly repairs or an expensive fine.

 

The FENSA certification scheme does not apply to rooflights, but it applies to roof windows that are replacing an existing roof window, it does not apply if the roof window is a new addition to your property, and you will require approval from Building Control.

If you are replacing an existing rooflight, the FENSA scheme does not apply and you will require Building Control approval.

Please note that the homeowner is ultimately responsible for ensuring that their roof window or rooflight installation complies with these standards and regulations.

For more information give our experienced team a call on 01379 771002.

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