I am in the middle of a bathroom remodeling project and I have a question regarding the taping & finishing of hardy backer board for my shower. After I put the hardy backer board up I applied fiberglass tape and regular joint compound to the seams. After doing this I read somewhere that you are supposed to use the same material on the seams that you are planning to use for your tiling (i.e. thinset with latex additive). Will there be a problem if I leave the regular joint compound on the seams and just apply the tile thinset (as I am tiling) directly over the joint compound? Or, should I sand down the regular joint compound and apply the thinset to the joints?
- posted
19 years ago