When laying on concrete slab subfloor, is a moisture barrier required? I set some down against a wall to see how it looked and the next day moisture built up between the tile and concrete floor. Any advice would be appreciated.
Adding a moisture barrier is always a good choice to avoid moisture build-up, but it is not 100% needed. You may install these tiles directly on a clean concrete floor. Try installing one tile on the floor to see how it works.
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