Project Guide

Attach V-Channels and Felt for Sliding Windows
Sliding windows - Weatherproofing Windows
  • Attach metal V-channels to the windows where the sash fits.  
  • Attach reinforced felt around the remaining three sides of the sash.  
  • Use a tubular gasket to seal the gap where the sashes meet.
Attach Self-Adhesive Strips for Casement Windows
Casement windows   - Weatherproofing Windows
  • Attach self-adhesive foam compression strips around the window stops on all four sides of the sash.  
  • Remember that self-adhesive strips won’t stick if the surface is too cold — 50 degrees or lower. If that’s a concern, substitute high-quality neoprene strips.
Install Self-Adhesive Weather Stripping for Metal or Vinyl-Clad Windows
Weather stripping metal vinyl-clad windows - Weatherproofing Windows

Metal and vinyl-clad windows are no different from wood-frame windows, except you must use only self-adhesive weather stripping products so that you do not puncture the cladding.