We have an upstairs 9x5 bathroom in wooden construction. Ceiling height is 8 feet. Our contractor used a combination of "GoBoard" (concrete-type board) for the shower area, and "blueboard" for the remaining part of the bathroom.
We purchased porcelain tile that is 12x24", 5/16" thickness, and this tile is heavy. Each piece of tile weighs about 8.5lb (so about 4.25 per sq ft).
We'd like to tile from floor to ceiling to achieve a modern look, but don't want backerboard/tile to fail someday down the road, and come crashing down.
The current dilemma is whether to:
A. Scale down the plan and tile only a portion of the wall, perhaps the lower 4 feet.
B. Ask the contractor to replace the "blueboard" with something stronger.
C. Go ahead and tile over the blueboard.
Was hoping someone could suggest ballpark figures of safe/unsafe load and if we're thinking correctly here. Many thanks.