How To Repair A Double Pane Window

This is a less invasive alternative where a technician attempts to remove moisture without removing the glass.

. YouTube +1 Note: Total thickness includes both glass panes and the spacer in between. Contact a local glass shop or a retailer like The Home Depot to order a custom-sized replacement unit. YouTube +1 2. Remove the Old Unit Safety First: If the glass is shattered, tape it thoroughly to keep it from falling apart while you work. Pop the Stops: Use a putty knife or a 5-in-1 tool to gently pry off the vinyl or wood glazing beads (the strips holding the glass in place). Always remove the top bead last to prevent the glass from falling out. Cut the Seal: Use a thin utility blade to cut through the old silicone or double-sided tape bonding the glass to the frame. YouTube +3 3. Prep the Frame Scrape away every bit of old sealant, tape, and debris from the sash frame using a razor blade. Wipe the area clean to ensure the new silicone adheres perfectly. YouTube +3 4. Install the New Glass Apply Sealant: Run a fresh bead of 100% silicone around the perimeter of the frame. Set the Glass: Place your new unit onto the setting blocks at the bottom of the frame to center it. Seal it Up: Press the glass firmly into the silicone. Reinstall the glazing beads by snapping them back into place. YouTube +2 Watch these detailed demonstrations to master the removal and installation process: 12 min How to Repair a Double Pane Window | Ask This Old House This Old House how to repair a double pane window