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.

Would someone be able to advise? Many thanks.

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.