Order the replacement pane. Most buildings require safety glass in entry doors because it helps to prevent injuries if the pane is broken. Measure the broken pane of glass beyond the molding stops that help to hold the glass in place. Then subtract 1/8″ to allow for the new glass to expand in the door when it heats up. This is the size glass pane your should order from a hardware store or glass maker.
Carefully remove broken glass pieces. You can put painters’ tape on the backside of the broken pane to hold broken pieces together. Always wear safety glovesand glasses to protect yourself from broken glass.
Use a razor knife to cut free the molding surrounding the pane. Carefully pry the molding free with a putty knife without breaking the molding.
Insert the new pane of glass. After you insert the pane, replace the molding.
Apply a bead of caulk all around the edges of molding. Your door is now ready for painting.
Use a heat gun to soften old glaze. You can then scrape old glaze off with a painters’ knife.
Insert new pane of glass.
Apply glazing compound with a putty knife.
Scrape excess glazing compound from window pane. Glazed window pane is now ready for paint.
Replace Your Door Window Pane with Glass Doctor
While these steps may seem fairly easy to do yourself, it can be a complicated process. Call Glass Doctor at 855-603-1919 for a free, in-home consultation and quote. Our glass specialists will replace the window pane in your door correctly, safely, and at an affordable price.
How to Repair Door Glass: http://www.thisoldhouse.com/toh/video/0,,1631616,00.html