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.
Here’s a draft for a blog or social media post. You can adjust the tone depending on your audience (DIY/home repair). How to Fix Cracked Window Putty (Without Replacing the Whole Window)
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. how to fix cracked window putty
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.)
Don’t paint the putty too soon—it traps solvents and leads to future cracking. Gently work a putty knife or small chisel
Use a heat gun on low (or a hair dryer) to warm the cracked putty. Don’t overheat—just enough to soften it.
If the window frame is rotted, or the glass is loose and moving, you may need a full reglazing or frame repair. You can adjust the tone depending on your
Apply exterior paint over the cured putty, overlapping slightly onto the glass for a waterproof seal.