FENSA stands for the Fenestration Self-Assessment Scheme. It has been set up by
the Glass and Glazing Federation (GGF) and other industry bodies with government
encouragement in response to the current Building Regulations for England and

When having windows and doors replaced homeowners must comply with current
thermal performance standards and ensure that they get a certificate of
compliance from FENSA or from Local Authority Building Control. FENSA also
enables companies that install replacement windows and doors to self certify
compliance under these Building Regulations.

◾FENSA - The industry gold standard for replacement windows and doors - the proven brand trusted and demanded by consumers and local authorities

◾Over 9000 registered businesses.

◾Over 6 million homeowner FENSA certificates. Over 24% of households in England and Wales have used FENSA to comply with the Building Regulations.

◾Partnerships with industry leaders e.g BFRC (Window Energy Ratings - Energy Efficient Windows) and the Energy Saving Trust
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