If you absolutely must paint it right away, you’ll probably has to use one of the latex based glazing compounds. Initially, it doesn’t really dry out so much as oxidize which forms a skin on it. If your old window is missing putty altogether (it may have fallen out ages ago) and if there is exposed wood, paint with a primer first and allow to dry before applying putty. Remove any cracked putty by gently easing the edge of your putty knife into the crack and giving it a bit of a wiggle. Although using a hair dryer won’t speed up the drying time by days, it will help your glazing putty develop an outer skin of dried putty that is paintable. Using a hair dryer set on low can help speed up the drying of your glazing putty. During this time, the filler should dry, but it will be necessary to check. Sanding should be carried out only a day after applying the putty. Five to 15 days How long after putty Can I sand?ĭo not prime the surface before sanding.
