MAPEI Premium Mortar Ceramic Tile Mastic Marble 0011718

For use with ceramic, porcelain and most types of marble and natural stone tiles. Tile up to 20-in. Suitable substrates: gypsum wallboard (dry walls only), cement board, exterior-grade plywood (interior only), concrete and masonry block. Mold and mildew-resistant. For use on shower floors and walls. For interior use only. Smooth and easy to spread premixed adhesive. May contribute to LEED certification project points.