Windows & Glazing

10 Ways to Make Sash Windows More Efficient

Published 6 Jun 2026

What this video covers

Ranked from good to best.

Sash windows are beautiful but leak heat. Here are ten ways to make them more efficient, ranked from good to best. From Axiom Eco Homes.

In this video

  1. 0:00 Intro
  2. 0:10 10. Draft Excluder for Bottom Gap
  3. 0:17 9. Window Insulation Panel
  4. 0:27 8. Low-E Window Film
  5. 0:36 7. Window Quilt or Thermal Blind
  6. 0:47 6. Heavy Curtains with Pelmet
  7. 0:56 5. Repair Sash Mechanism
  8. 1:04 4. Fit Draught-Proofing Strips
  9. 1:12 3. Conservation-Grade Double Glazing
  10. 1:25 2. Double-Glazed Sash Replacement
  11. 1:35 1. Add Secondary Glazing
  12. 1:46 Where to start