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FENSA is the Competent Person Scheme that is trusted by the industry

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020 7645 3700
FAX 020 7407 8307

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Welcome to FENSA - the leading body providing Building Regulations compliance for homeowners replacing windows and doors.

FENSA works with thousands of double glazing contractors in England and Wales. In choosing a FENSA double glazing registered company the consumer is offered greater protection when purchasing double glazing for their home.

  • Why greater protection with a FENSA registered firm?
  • 1. Double glazing companies are vetted with a Pre-Approval Inspection.
  • 2. Regular assessment of FENSA double glazing companies by an 'independent inspection body' once they are FENSA registered.
  • 3. 5-10 year insurance backed guarantee available to the homeowner on every installation which falls under FENSA’s remit.
  • 4. FENSA Building Regulations certificate dispatched to the homeowner for every registered installation which falls under FENSA’s remit as proof of compliance.
  • 5. Your property will be certified as compliant to Building Regulations without the added cost and time of arranging assessment by Building Control.

FENSA has issued over 8 million window and door homeowner certificates and is the recognised double glazing industry leader. Learn more here.

In partnership with:

Energy Saving Trust   GGF
LABC   BFRC
TGO Sponsored by FENSA

Contact information


FENSA Limited,
54 Ayres Street,
London,
SE1 1EU

Tel: +44 (0)20 7645 3700
Fax: +44 (0)20 7407 8307
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