Mapei Keraflex Plus Extra Smooth Large & Heavy Tile Mortar, White corners Same stainless steel quality as

Same stainless steel quality as the rest of the Trendline series

Inside corners in a tiled shower are one of the most common places leaks start

Large format tile (over 12"×12")

Over wood subfloor on upper floors (usually no vapour barrier needed)

Mapei Keraflex Plus Extra Smooth Large & Heavy Tile Mortar, White corners Same stainless steel quality asSetting tile? Keraflex Plus Extra Smooth Large & Heavy Tile Mortar, White is the thinset that goes between your tile and the substrate. Built for large format and heavy tile (1224 and up) where standard thinset would slump or sag under the weight. Non slump on walls, no lippage on floors. White color so it doesn't telegraph through translucent tile or light grout joints.