How to Seal Window Sashes

Silicone Caulking

1). Clean the window panes to be sure they are free of dust for proper adhesion of the silicone caulking.
2). Insert the tube of silicone caulk into the caulking gun and snip off the tip of the tube.
3). Apply a thin bead of caulk around each window pane where the glass and the wood framing meet.
4). Let the silicone caulk dry and harden.

1). Measure the window pane to be sealed and cut a piece of weatherstripping from the roll to the length of your measurement.
2). Remove the paper backing and apply the weatherstripping to the edges where the glass and wooden window frame meet.
3). Use your finger to press the weatherstripping firmly into place.
4). Continue measuring, cutting and applying the weatherstripping around the edges of each pane of glass to seal out drafts.