I have a 7 ft x 4 ft mirror in my bathroom we want to replace the light fixtures on. Currently it has the Rectangular 4 bulb fixture that is easily glued on using silicone sealant and double sided tape.
We want to replace it with the round base unit that is designed to mount directly to the wall box. Unfortunately the holes cut in the mirror over the electrical boxes is just large enough to get the wires through. There is no way we can screw the fixture to the electrical box. Pulling the mirror off and having the holes cut bigger is very expensive (3 quotes over $300 so far). Replacing the mirror is out of the question (the wife like sit too much)
I have found a 4" round electrical cover, kinda cone shaped I could mount on the mirror that would be perfect, except I can't figure out how to glue it to the mirror and make it stick. I tried Liquid nails Mirror adhesive and let it sit for 4 days, but I was able to pull it off with very little effort.
Any suggestions for a better method? I though of going straight to heavy duty liquid glue or gorilla glue, but thought I better solicit suggestions first