Installing wonderboard on pier and beam foundation
I assumed that the wonderboard would build such a strong foundation for the tile that any squeaks would be eliminated in the wood below,
Unfortunately you thought wrong. Concrete boards may make the floor seem stiffer, but it adds no structural strength and neither has anything to do with squeaks. Squeaks mean the boards are loose and need to be fixed before you install the concrete backer. You can still fix this from underneath....maybe.
Tile 4 You LLC Troy, MI
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