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I would have liked to know if due to a problem of water evacuation in the crawl space it could have caused a detachment of tiling due to rising moisture on anhydrite screed thank you in advance for your response cordially

Moisture rising on an anhydrous screed can actually cause tiling. In fact, anhydrous screeds, based on calcium sulphate, are much more sensitive to moisture than a traditional cement-based screed. Accidental moisture recovery leads to swelling, deformation of the screed and, consequently, tilting of the tiles. That's why I still do not recommend this type of floor screed for bathrooms and kitchens, or even for the garage when it is buried.

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