How To Reseal: A Window Fixed

Use OSI Quad or high-grade polyurethane for exterior. These remain flexible for 50+ years.

Resealing a fixed window is a low-cost, high-return DIY task that prevents air leaks and water damage. Proper surface cleaning and choosing the right exterior-grade sealant are the most critical success factors. how to reseal a window fixed

Is it time to reseal your windows? How to check and what to do Use OSI Quad or high-grade polyurethane for exterior

Apply painter’s tape along the glass (leave 1/16” gap for sealant) and along the wall/frame. This guarantees a crisp line and prevents smearing on the fixed glass. how to reseal a window fixed