How To Fix ~repack~ Cracked Window Putty -

Got a drafty window? Start with the putty—it’s cheaper than a heating bill.

Wait at least 7–14 days before painting. This allows the putty to form a hard skin. how to fix cracked window putty

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

Apply exterior paint over the cured putty, overlapping slightly onto the glass for a waterproof seal. how to fix cracked window putty

Roll the putty into a thin rope (about ¼–⅜ inch thick) and press it firmly into the gap between the glass and frame. Smooth it with a putty knife at a 45° angle, matching the profile of the old putty.