Project Guide

Weatherproofing Your Windows

1
CUT WETH-R-STRIPS TO FIT IN THE SASH CHANNELS
Cut Weth-R-Strips fit sash channels - Weatherproofing Windows
  • Cut the Weth-R-Strips long enough to extend at least 1 inch beyond the sash ends when the window is closed.
  • Cut vinyl with scissors.
2
STICK THE VINYL IN PLACE
Remove adhesive backing stick vinyl place  - Weatherproofing Windows
  • Flare out the open ends of the Weth-R-Strip with a putty knife to create a tight seal with the sash.
  • Remove the adhesive backing and stick the vinyl in place.
3
WIPE DOWN THE UNDERSIDE OF THE SASH
Wipe down underside sash - Weatherproofing Windows

Tip: The surface must be at least 50 degrees for self-adhesive strips to stick.


  • Flare out the open ends of the Weth-R-Strip with a putty knife to create a tight seal with the sash.
  • Remove the adhesive backing and stick the vinyl in place.
4
SEAL THE GAP
Seal gap where top sash meets - Weatherproofing Windows
  • For double-hung windows, raise the bottom sash completely to the top, and then lower the upper sash a couple of inches.
  • This reveals the lower rail, which is normally hidden.
  • Seal with Weath-R-Strip weather stripping.
  • If the top sash is stationary, tack tubular gasket to the outside of the lower sash so that it compresses slightly against the top sash when the window is locked shut.
5
APPLY PAINTABLE CAULK
Apply paintable caulk - Weatherproofing Windows
  • Apply caulk around both the interior and exterior trim.
  • Smooth with a gloved finger or wet knife.