Dealing with Glazing Putty
The aluminum windows on my house have an almost concrete-like substance (or very hard putty) on the exterior, which presumably holds the windows in place. This substance is cracking and whole chunks are falling out of the window. What should I do?
The trick to applying putty is its softness. Remove a palm-full from the can, knead it into a bead about the size of your small finger, force into where the glass and frame meet, and then use a glazier’s knife or small putty knife to shape the putty at a 30 to 45 degree angle between the glass and the frame. By the way, this is an opportune time to replace scratched or damaged panes.