How to join backerboard and blueboard
I will be partially tiling the walls surrounding a bathtub.
I plan to up to 6 ft with the tile. If the backer board goes to the ceiling, what do I do with the untiled portion? It looks like hardibacker board has a face that can be painted. But what about taping the joints? Will it look smooth and consistent like regular sheetrock when painted?
Only part of the bathroom will be tiled and I plan to use blueboard on the the untiled portions? Can I just butt together the backer board and the sheetrock, and then tape, prime and paint? That seems impossible with the USG material because it is so rough.