Mapei Ultraplan 1 Plus High-Performance Quick-Setting Self-Leveling Underlayment kerdi-drain The Classic sits in the

The Classic sits in the middle: visible

Count every inside corner in the shower: typical 3-wall shower has 2 vertical wall-to-wall corners + 3 wall-to-floor corners + 2 curb-to-wall corners = 7 inside corners minimum

seam placement matters more than most installers admit

VCT (vinyl composition tile)

Mapei Ultraplan 1 Plus High-Performance Quick-Setting Self-Leveling Underlayment kerdi-drain The Classic sits in theSetting tile? Ultraplan 1 Plus High Performance Quick Setting Self Leveling Underlayment is the thinset that goes between your tile and the substrate. Polymer modified for proper bond strength on porcelain, ceramic, and natural stone. Use under tile from 2 to 3 thickness.