Moderate Urgency
Drafty Windows: How to Find and Fix Window Air Leaks
Feel cold air coming through your windows? Learn how to find window drafts, seal air leaks, and when to call Virginia Glass Windows for professional weatherization.
6
Warning Signs
7
Known Causes
7
Solution Steps
Free
Professional Assessment
Common Symptoms
Cold air felt near window edges in winter
Curtains or blinds moving slightly without windows open
Cold spots on the floor near windows
Higher than expected heating or cooling bills
Visible daylight around window frames
Whistling sound when wind blows against the window
What Causes This
Worn or damaged weatherstripping
Gaps between the window frame and wall
Failed caulking around the window exterior
Warped or misaligned window sash
Single-pane glass with no insulation value
Failed seal on double-pane insulated glass
Settlement causing gaps in the window opening
How to Fix It
Solution Steps
1Hold a lit incense stick or candle near window edges to detect air movement
2Check weatherstripping condition on all operable windows
3Inspect exterior caulking for cracks, gaps, or missing sections
4Examine the window sash for proper fit and alignment
5Replace worn weatherstripping as needed
6Re-caulk exterior window perimeters
7For persistent drafts, consult a professional about glass or window upgrades
When to Call a Professional
When DIY weatherstripping does not resolve the draft
When the window frame is warped, rotted, or damaged
When single-pane windows need upgrading to insulated glass
When drafts are caused by structural settling
When energy bills remain high despite sealing efforts
Stay Ahead
Prevention Tips
Replace weatherstripping every 3 to 5 years
Inspect and re-caulk window exteriors annually
Upgrade to double or triple-pane insulated glass
Use window insulation film during winter months
Schedule annual window maintenance inspections
Common Questions
FAQs About This Problem
Hold your hand near window edges on a cold or hot day. If you feel air movement, your windows are leaking. You can also use a thermal camera or hire an energy auditor for a professional assessment.
Similar Issues
Related Problems
Need Help With This Problem?
Upload a photo and get a professional assessment for free. Same-day service across the DMV.
Licensed & insured in DC, MD & VA. Satisfaction guaranteed.