Find or Check your Local FENSA Installer

Welcome to FENSA - a government authorised Competent Person Scheme for the replacement of windows, doors, roof windows and roof lights in England and Wales against the relevant Building Regulations

FENSA works with thousands of double glazing contractors in England and Wales who have been assessed for their ability to install replacement windows and doors in accordance with the relevant Building Regulations.


Useful information about ordering replacement FENSA certificates. All replacement windows and doors installed since 1st April 2002 will require a FENSA certificate if the work is undertaken by a FENSA member.
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Useful information about what to look out for when finding a company to replace your windows and doors.
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Aside from having your windows/doors replaced by a company that is a FENSA member, many companies will sell energy rated windows/doors.
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Registered in England and Wales No 03058561