Glass Doctor explains how to replace a broken single-pane window safely and efficiently. Remove broken glass and old glazing. Meas... Glass Doctor Show all Scrape away the old, hardened glazing compound and remove the metal glazing points using a putty knife or pliers. A heat gun can soften stubborn putty, but avoid overheating the wood. Once clear, sand the wood grooves and wipe the area clean with a damp cloth or rubbing alcohol. YouTube +3 3. Measure for New Glass Measure the height and width of the cleaned opening. Subtract 1/8 inch from each dimension to allow for the expansion and contraction of the frame. Take a shard of the old glass to a hardware store like The Home Depot to match the thickness and type (e.g., annealed or tempered). Glass Doctor +2 4. Install the New Pane Bedding
With the area secured, the delicate work of removal begins. If the glass is not already missing, the pane must be carefully removed from the sash. For single-pane wood windows, this typically involves softening the old putty or glazing compound with a heat gun or hairdryer. Once pliable, a putty knife can be used to scrape away the old material, exposing the metal glazing points—small metal triangles that hold the glass in place. These must be pried out. The broken glass should then be pulled out piece by piece, starting from the top, and set aside in a safe container. If the window is a modern vinyl or aluminum model, the process differs slightly, usually involving the removal of a vinyl glazing bead or rubber gasket that snaps in and out of the frame. how to replace a broken window pane
Before you start, make sure to take necessary safety precautions: Glass Doctor explains how to replace a broken
With the glass removed, your focus shifts to the frame itself. The old, hardened glazing putty (the beveled compound holding the pane) and the small metal triangles known as glazing points must be completely eradicated. Use a heat gun or a hair dryer on its highest setting to soften the old putty, being careful not to scorch the wood. Once pliable, scrape it away with a stiff putty knife, working at a low angle to avoid gouging the frame. After the bulk of the putty is gone, you will see the glazing points. Remove these with a pair of pliers or a flat-head screwdriver. Finally, use a solvent like denatured alcohol or a commercial paint remover to clean the wood down to its bare surface. A clean, smooth frame is essential for the new putty to adhere properly. Let the frame dry completely. Glass Doctor Show all Scrape away the old,