I have two 15 year old mirrored closet doors, where the adhesive has completely detached from the frame, except for the top and bottom horizontal clips. It's harrowing to try to open or close them for fear of the whole thing shattering, and I set out to find an adhesive solution.I need the storage space!This stuff is GREAT. The tube made it simple enough to get the spout behind the glass, slather the frame with glue, then press the mirror against the frame. You need to hold or gently clamp it for 10 minutes or so, just to let the adhesive set. The more adhesive you can get on the object, the better I think it will hold.I only put a small amount around the middle of the frame, just to test and see how it would do.and now I'm afraid to force it off and do the entire frame because it's so firmly held. So I'll leave it for now and wait until it starts to fail before I redo. This is AWESOME stuff.