Tile failure due to moisture

Plumbing · Whirlpool Baths · printed page 300 (PDF page 301)

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Book index entries

Bathtubs – Tile Failure Due to Moisture

Text in the illustration

tile grout should be maintained watertight caulking should be maintained at edge of bathtub, top of tiles and corners appropriate backing material should be used cement board and tile backer board are waterproof greenboard is water resistant and is a better choice than regular drywall deteriorated caulking or grout allows moisture behind the tile this leads to deterioration of the adhesive, damage to the backing material, and debonding of the tile drywall will disintegrate when exposed to moisture, and it can support the growth of mold bad good Tile failure due to moisture
tile grout should be maintained watertight
good
bad
caulking should be maintained at edge of bathtub, top of tiles and corners
appropriate backing material should be used
cement board and tile backer board are waterproof
greenboard is water resistant and is a better choice than regular drywall
deteriorated caulking or grout allows moisture behind the tile
this leads to deterioration of the adhesive, damage to the backing material, and debonding of the tile
drywall will disintegrate when exposed to moisture, and it can support the growth of mold

Generated explanation

The illustration shows a bathtub with a three-sided tiled surround, divided by a dashed line into good and bad conditions. The good side identifies watertight grout, maintained caulking at the bathtub edge, tile tops and corners, and appropriate backing material. The bad side shows loose or debonding tiles and explains that deteriorated caulking or grout permits moisture behind the tile, damaging adhesive and backing. An additional annotation warns that moisture-exposed drywall can disintegrate and support mold growth.