Draught-proofing casement windows

Get rid of those draughts and increase the energy efficiency of your home by draught-proofing any gaps in casement windows.

Level of difficulty

Level 2: Intermediate

Things you’ll need

Dust sheet
Paint scraper
Brush seal
Spring or V-strip

The steps to follow

Note: With hinged casement windows, you can use weatherproof excluders to draught proof. You can also use compressible strips or V-strips.

Compressible strips

  1. You can buy compressible strips that are self-adhesive strips from your local DIY shop
  2. Measure and cut the length of strips you need to attach to the rebate of your casement window
  3. Peel off the backing of the adhesive strip and fasten it to the rebate of the staff beads
  4. You might feel a bit of friction when opening and closing the window at first, but after a while, it will eventually adjust


  1. For windows that don’t accommodate compressible strips, you’ll need to use a V-strip
  2. V-strips are also called self-adhesive draught seals and can be fitted into gaps in the window. They exclude draught when windows are closed against them
  3. Measure the inner face of the window staff beads and cut the V-strip to size
  4. Peel off the backing of the adhesive strip and stick it onto the staff beads
  5. The V-strip should eliminate draft from coming in through the casement window

Don’t want to DIY? Get recommended window specialists for your home improvement job.

Please note that all our DIY guides and ‘Expert answers’ advice have been written strictly for reference only. Rated People do not accept any liability for any damage caused to an individual, property or anything else as a result of following our DIY guides and using our ‘Expert answers’ advice.

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