Spread and Notch Mortar

What happens here

First, use a flat trowel to spread a layer of thin-set mortar evenly across the subfloor (which in this video is an orange Schluter-DITRA uncoupling membrane). Next, use a notched trowel to create uniform ridges in the mortar. This 'combing' technique ensures proper adhesion and helps release air when the tile is set. Finally, clean any excess mortar from the edges of the work area to maintain clean grout lines and allow for proper clip placement.

Goal: Prepare the subfloor with thin-set mortar