How to Weatherproof Windows for Winter

Why This Matters

Drafty windows are a major source of winter heat loss. Try these affordable fixes before replacing.

What You Should Do

1. Apply weatherstripping — Adhesive foam or V-strip seals gaps.

2. Use window film — Shrink-wrap creates insulating barrier; $5-15/window.

3. Caulk gaps — Between frame and walls.

4. Install storm windows — Add insulating air layer.

5. Use draft snakes — Fabric tubes on sills block bottom drafts.

6. Close curtains at night — Heavy curtains provide insulation.

When to Call a Professional

If weatherproofing doesn't resolve drafts, or if seals are failing, a window contractor can assess whether replacement is needed.

The Bottom Line

Staying ahead of windows & doors maintenance saves money and prevents emergencies. Search our directory for a trusted windows & doors professional.