Find a FENSA
Approved Installer


Replacing windows or doors?



Remember to ask for a FENSA certificate

Before appointing an installer to replace windows or doors, check you'll get a FENSA certificate when the work's complete.

It's all the proof you need of a job done right.

Why you need it



Become FENSA Approved

Boost your business for less than you think and reassure customers they’ll receive a FENSA certificate when the job’s done.

Find out why to join

What homeowners need to know


Buying or selling a property?

Check if the windows and doors were registered by FENSA and reorder your FENSA certificate if it's lost.

Search for a FENSA certificate

Harry's Advice

Harry is on a mission to help professionalise installers and protect homeowners across the UK.

Get some advice

How to find a window or door installer you can trust

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