Replacing Worn Window Weatherstripping: Eliminating Air Infiltration

## The Critical Role of Window Weatherstripping Weatherstripping is the flexible barrier that seals the perimeter gap between operable window sashes and the stationary frame. Over years of friction and sunlight exposure, weatherstripping compresses, frays, and loses its elastic recovery. ### How to Test Your Window Seals: - **The Dollar Bill Test:** Place a crisp dollar bill across the sill or jamb, close and lock the sash. Try to slide the bill out. If it pulls out freely without friction, your weatherstripping is no longer sealing properly. - **The Incense Smoke Test:** On a windy day, hold a smoking incense stick near the window perimeter. Smoke flickering horizontally reveals active air leaks. ### Common Profiles: 1. **Pile / Fin-Seal:** Common in vinyl sliding and double-hung tracks. Slips into a T-slot channel. 2. **Foam Bulb (Compression):** Common on casement and awning window frames where the sash pushes tight against the jamb. 3. **Adhesive Foam Tape:** Quick temporary solution for older wood windows. For complete window tune-ups or full-envelope replacements, contact ServiceFind Windows Pro for an upfront **Fair Quote**.