A must-have for any tiler's toolkit, this specially formulated primer enhances performance of mortars and adhesives and improves adhesion, durability, flexibility, waterproofing, and workability. Adding No More Ply Primer helps permit feather edging of repair mortars and effortlessly prepares substrates for wall or floor tiling. No More Ply Primer can also be used as a primer before tile fixing, providing extra protection across the entire installation.