Drafty Windows

Why Windows Get Drafty

Windows develop drafts when air can pass between the sash and frame. Several issues cause this:

Worn weatherstripping is the most common culprit. The seals that block air when the window is closed compress, crack, and deteriorate over time.

Window settling or warping creates gaps between the sash and frame. Wood windows can warp with moisture changes; vinyl windows can distort with age.

Failed glazing (the seal between glass and frame) can let air through, especially in older windows with dried or missing putty.

Hardware problems may prevent the window from closing tightly. Worn locks, broken latches, or loose hinges all reduce compression against weatherstripping.

Finding the Source

• Hold a lit candle near the window edges on a windy day—flame flickers indicate air movement
• Feel around the window with your hand for cool air streams
• Look for visible gaps or daylight around the sash
• Check if the window closes and locks completely

Solutions for Drafty Windows

Weatherstripping replacement solves most draft problems cost-effectively. We install new seals matched to your window type.

Hardware adjustment or replacement ensures the window closes tightly. Proper compression against weatherstripping is essential.

Re-glazing seals gaps between glass and frame in older windows with putty glazing.

Window replacement is warranted if the frame is warped beyond repair or so deteriorated that other fixes won't last.