QUESTION

Silicone Adhesive for Marble - I was curious about using silicone to attach marble in a shower installation?

ANSWER

ANSWER - 100% Silicone sealants can bond extremely well. It could bond the stone to the shower substrate and you would only need about 10% coverage to get an adequate attachment, but the problem would be you would have a lot of voids in the back of the stone that could lead to moisture problems. It would be best to use a good quality polymer or latex modified thin-set and then caulk all of the transition areas with the silicone sealant. Of course the shower needs to be waterproof with the proper wall and floor membranes and proper flashing. Good Luck!