A “fixed” window sometimes cannot be fixed. Call a glazier or window contractor if:
Expected pro cost: $200–$500 to reseal a large fixed window, vs. $50 in materials for DIY. how to reseal a window fixed
For glass-to-frame resealing: Load your caulking gun. Cut the nozzle at a 45-degree angle to a diameter slightly larger than the gap. Puncture the inner foil. A “fixed” window sometimes cannot be fixed
For frame-to-wall resealing: Use OSI Quad or high-grade polyurethane for exterior. These remain flexible for 50+ years. Expected pro cost: $200–$500 to reseal a large
Before you start ripping out old sealant, determine exactly where the problem lies.
Is the leak coming from the gap between the glass and the frame? Or is it coming from the gap between the frame and the wall?
