Failed Seals and Loose Operation
Windows that no longer close tightly leave gaps for cold air to enter. Worn locks, bent sashes, and stretched balances prevent compression of weatherstripping along meeting rails.
Older double-hungs may rattle in wind even when latched, a sign that hardware or frame alignment needs attention. Drafts are often felt most on north-facing rooms during Connecticut winters.
Worn or Missing Weatherstripping
Foam, pile, or bulb seals degrade over years of opening and closing. Cracked or compressed stripping allows air infiltration around sashes and frames.
Replacement stripping can help on otherwise sound windows, but it is a temporary fix when frames are warped or units have outlived their useful life.
Installation and Insulation Gaps
Drafts sometimes come from the rough opening rather than the window unit itself. Missing or settled insulation between the frame and studs creates a direct path for exterior air.
Poorly foamed or unsealed gaps during a past replacement project are common in homes where installers prioritized speed over detail. Full-frame replacement corrects many of these hidden leaks.
Single-Pane and Aging Frame Issues
Original single-pane windows in older Connecticut homes conduct heat rapidly and feel cold to the touch even without obvious air movement. Storm windows helped historically but modern insulated units perform far better.
Rot in wood frames, swelling from moisture, and separated glazing beads all compromise the seal. When multiple issues stack up, replacement usually delivers better comfort than repeated repairs.
Quick Diagnostics Homeowners Can Try
On a windy day, hold a thin tissue near closed sash joints; movement indicates air infiltration. Check for daylight around the frame in the attic side of window openings when safe to access.
- Exterior caulk maintenance helps at frame-to-siding joints.
- Interior storm panels add temporary relief on historic single-pane units.
- Professional assessment clarifies when replacement beats repeated repairs.
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