Window Putty Replacement |verified| Jun 2026

Maintaining the structural integrity of your home often comes down to the smallest details, and is one of the most critical yet overlooked tasks. Over time, the glazing compound—the "putty" that holds your glass panes in place—dries out, cracks, and eventually falls away. Ignoring this leads to more than just an eyesore; it causes air leaks, water damage, and timber rot.

Replacing window putty is a classic DIY skill that can extend the life of your timber windows by decades. This guide covers everything from identifying failure to a professional-grade step-by-step application. window putty replacement