When your sliding glass door gets damaged, it will not function correctly and will be hard to open. You will need to fix it as first as possible to ensure safety. Tighten or loosen the adjusting screws. Clean the bottom of the track-you may need to use warm water and soap. Pull away trim from around the glass, then remove the door from its frame and lay it on the floor. If you don’t seem to find the problem, you may have to replace the rollers. Get the right measurements to help you determine the correct dimensions of the glass needed.