I get you. It is going to be a really big mess if you decide to demolish the original tile flooring. And you might do some research work and find out that it is possible to install tile over tile. Well, based on the guideline of ANSI A108 — the Installation Standard Specification for Ceramic Tile, the general requirements for tile installations, A108.02 4.1.1 states:
“All surfaces shall be structurally sound, clean, dry and free of oily or waxy films and all foreign matter. Concrete surfaces shall be free of form oil, curing compound laitance, and cracks.”
That said, there are still conditions that you are able install tile over tile, but here are 5 questions you need to answer before you take this strategy:
- Did the old installation fail?
- If so, what was the cause of failure?
- Was it an installation or structural problem?
- If it was properly installed, is the membrane still well adhered and able to perform its job to support the new installation?
- Did it survive the demolition process intact?
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