How To Fix Cracked | Window Putty ^new^

Don’t paint the putty too soon—it traps solvents and leads to future cracking.

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

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. Don’t paint the putty too soon—it traps solvents

Roll a small amount of glazing putty in your hands until it’s soft and pliable. (If it’s too stiff, a few drops of linseed oil can help.) how to fix cracked window putty

Apply exterior paint over the cured putty, overlapping slightly onto the glass for a waterproof seal.