Guides & Essentials

10 Things to Know About FENSA Certificates

Published 6 Jun 2026

What this video covers

Your guide to legal window replacements.

If you're replacing windows or doors, a FENSA certificate is essential. Here are ten key facts to protect your home and sale. From Axiom Eco Homes.

In this video

  1. 0:00 Intro
  2. 0:10 10. Proves Building Regulations Compliance
  3. 0:18 9. Mandatory for Replacement Windows
  4. 0:28 8. Required When Selling Your Home
  5. 0:38 7. Installers Handle Certification
  6. 0:46 6. Missing Certificates Can Be Found
  7. 0:52 5. Retrospective Certificates Costly
  8. 1:02 4. Covers Energy Efficiency Standards
  9. 1:08 3. Not All Glazing Needs FENSA
  10. 1:16 2. Local Council Can Enforce Removal
  11. 1:23 1. Protects Your Home Sale
  12. 1:32 Where to start