Installed new tub how do I repair the tile?
Not sure if this is the right place to ask this. I installed a new tub, removed tile and greenboard one row around the old tub. Now I need to replace the backerboard and wonder how it should be attached. Can secure to the studs but between the studs the backer board will not be secured and the new tile grout gap will fall where the bottom of the old tile meets the top of the replaced tile.
Concerned about flex and cracking of the grout line. The old tile is really secured to the greenboard so I can't take another row off and move the joint to mid tile. Do I need to worry about flex and if so how can I correct? I thought about gluing a 1x4s to the inside of the greenboard and then attaching the new backerboard to that between the studs.