What substrates are acceptable to receive ceramic tile or stone?
There are many suitable substrates for the direct adhesion of tile or stone. Among them are concrete, concrete masonry, brick, cement plaster, cement backer board, mortar beds, exterior glue plywood (interior only), and gypsum wallboard (interior, non-wet areas only). It is even possible to install tile over unusual substrates (e.g. steel, fiberglass) or over some existing finishes (e.g. terrazzo, epoxy coated floors, ceramic tile, stone, and vinyl). Please refer to other questions in this section for more information on installaing tile or stone over certain substrates and existing finishes.
