Wonderboard on wonderboard [Archive] - Ceramic Tile Advice Forums - John Bridge Ceramic Tile


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08-05-2004, 08:05 PM
We are going to replace tile that is installed on Wonderboard with thinset. How hard is it going to be to get it up? And, assuming we can save the original Wonderboard without too much damage, can we install 1/4" Wonderboard on top of the 1/2" Wonderboard so that the new tile will be even with the wood floors in the adjoining room? Sorry to be so dumb, and thanks in advance.

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08-05-2004, 08:20 PM
Most likely the wonderboard will be in bad shape by the time you get the tile off of it. You might want to take up the old wonderboard and tile and go back with the right thickness of plywood and use 1/4 backerboard. Get added strength with thicker plywood, not thicker wonderboard.