How to Re-Glaze a Wood Window

Pick the large pieces of putty away from the window, using a putty knife or a screwdriver. Stubborn pieces may need to be softened, using a heat gun. Once the larger pieces of glazing compound have been removed, use a putty knife to scrape away the smaller pieces. Dust the window frame with a sash brush to remove any residual debris.

Remove a ping-pong ball-sized chunk of glazing compound from its container. If the putty is cold, warm it in your hand, making it pliable. Roll the putty between your palms to make a coil, about one-half inch in diameter. Gently press the coil along the edge of the windowpane, where it meets the frame.

Continue rolling coils of putty and applying them to the edge of the window, until there is a bead of putty around the entire window.

Clean the putty knife. Hold the putty knife at a 45-degree angle so its tip rests on the window and the edge of the blade rests on the bead of putty and the window frame. Slide the putty knife toward its handle, pressing the putty into the space between the window and the frame. Use smooth, even strokes.

Wipe excess putty from the putty knife, window and frame. Continue pressing the putty in place until all sides of the window have been glazed. Clean the knife as needed and between working on each section of the window. Allow the putty to dry according to the manufacturer's directions before resuming painting.