Stop drafty windows in winter with a combination of weatherstripping, caulking, and proper insulation.
Stop drafty windows in winter with a combination of weatherstripping, caulking, and proper insulation.
Though if your windows are 15+ years old, replacement often makes better financial sense. Salem homeowners dealing with nor’easters know that drafty windows in winter drive up heating costs and make rooms uncomfortable.
Here’s how to address window drafts:
- Weatherstripping Check — Inspect seals around sashes and frames. Worn weatherstripping is the #1 cause of drafts and costs $5-$15 per window to replace, although this is a short term fix. Look for gaps where daylight shows through.
- Caulking Gaps — Exterior caulk fails after 5-10 years. Re-caulk around window frames where they meet siding. Use silicone caulk rated for outdoor temperature swings common in New England.
- Plastic Film Option — Does plastic on windows help in winter? Shrink-wrap kits reduce drafts temporarily but look unattractive and need replacement each season. They’re a stopgap, not a solution.
- Interior Insulation — Cellular shades and heavy curtains add insulation value. They help, but won’t fix windows with failed seals or single-pane glass that conducts cold directly inside.
- Lock Your Windows — Engaged locks pull sashes tight against weatherstripping. Unlocked windows leave gaps that let cold air pour through — a simple fix many homeowners overlook.
- Professional Assessment — Thermal imaging reveals exactly where heat escapes. If multiple windows show significant air infiltration, replacement windows with foam-filled frames eliminate drafts permanently.
Draft Repair Recommendations
Best Overall: If windows are under 10 years old, weatherstripping and caulk. If older, invest in replacement windows that solve the problem permanently.
Best Temporary Fix: Interior shrink-wrap film kits plus heavy curtains while planning replacement.
Tired of fighting drafts every winter? Coastal Windows & Exteriors offers free thermal assessments that show exactly where your Salem home loses heat. We’ve helped 7,000+ homeowners across MA, NH, and ME enjoy draft-free winters. Get your free assessment today.
Ready to eliminate drafty windows for good? Schedule your free thermal assessment now. Coastal Windows & Exteriors specializes in energy-efficient window solutions with 7,000+ installations across MA, NH, ME.
Request a free window estimate from Coastal Windows & Exteriors.
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Last Updated: May 2026
Sources
- Upgrading from double- to triple-pane windows can improve energy efficiency performance by 40% or more. PNNL How Triple-Pane Windows Stop Energy and Money Flying Out the Window, Pacific Northwest National Laboratory’s research on the energy performance gains of triple-pane window upgrades. (2025)
- Upgrading from single- to triple-pane windows can save over $500 per year on energy bills. ENERGY STAR Residential Windows, Doors & Skylights, ENERGY STAR’s guidance on annual energy cost savings from high-performance window replacements. (Accessed May 2026)
