A stiff putty knife (2-inch is ideal), heat gun or hairdryer (to soften old putty), and fine-grit sandpaper.
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
Got a drafty window? Start with the putty—it’s cheaper than a heating bill. A stiff putty knife (2-inch is ideal), heat
Traditional oil-based glazing compound (like DAP '33') or modern hybrid polymer alternatives . 2. Removing the Old, Cracked Putty Cracked Putty Before starting
Before starting, gather these supplies from retailers like DAP Global or your local hardware store: