Project Guide
How to Weatherproof Windows
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Time Required: Over 1 day
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Difficulty: Intermediate
Windows can be the single largest source of energy loss in your home. This guide will teach you a few simple steps to eliminate drafts from the most common areas of a typical single- or double-hung window.
CUT WETH-R-STRIPS TO FIT IN THE SASH CHANNELS
- 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.
STICK THE VINYL IN PLACE
- 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.
WIPE DOWN THE UNDERSIDE OF THE SASH
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.
SEAL THE GAP
- 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.
APPLY PAINTABLE CAULK
- Apply caulk around both the interior and exterior trim.
- Smooth with a gloved finger or wet knife.