answer 1
If laying allure over existing ceramic tile, it may be necessary to skim coat the grout lines with a floor leveler. If you install allure over an existing floor that has an embossing or grout line on it, we recommend you skim coat with a floor leveler if the embossing or grout line is greater than 1/8”—(3 mm). The sub floor surface should be flat, dry, clean and solid. Carpet staples or adhesive residue must be removed to insure proper installation.
Subfloors should be flat within a tolerance of 1/8” (3mm) over a span of 10 feet. Any unevenness over 1/8” (3mm) must be sanded down or filled with a floor leveler.
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