Noticed cracked, crumbling, or missing putty around your windowpanes? Don’t panic—and don’t call a glazier just yet. Fixing cracked window putty (also called glazing compound) is a simple weekend project that can improve energy efficiency and prevent moisture damage.
If the window frame is rotted, or the glass is loose and moving, you may need a full reglazing or frame repair. how to fix cracked window putty
Here’s a quick, step-by-step guide to get it done. Noticed cracked, crumbling, or missing putty around your
Don’t paint the putty too soon—it traps solvents and leads to future cracking. If the window frame is rotted, or the
Apply exterior paint over the cured putty, overlapping slightly onto the glass for a waterproof seal.
Use a heat gun on low (or a hair dryer) to warm the cracked putty. Don’t overheat—just enough to soften it.
Gently work a putty knife or small chisel under the cracked sections. Remove only the loose or damaged putty, leaving firm areas if they’re still bonded well.