About half of our projects are waterproofed with Schulter systems, a waterproofing fabric and preformed pan and drain kit. We still install a lot of 2-stage mortar shower pans, and we use various waterproofing membranes, such as RedGuard. However, the Schluter Kerdi System is the absolutely best way to go. Check out this short video to lean more.
The Biggest Advance in Waterproof Tiled Showers: Schluter Systems
Rob Young, President