Schluter® DITRA-XL Uncoupling Membrane — 3'3" × 53'3" (175 SF)DITRA XL is the heavy duty version of DITRA 5 16" thick instead of 1 8", with deeper mortar columns under the tile for better performance over substrates with higher anticipated movement, under heavy natural stone, or in commercial applications. Same polyethylene grid and dovetail cavity system as standard DITRA four functions (uncoupling, waterproofing, vapour management, load distribution) in a thicker profile 175 sq ft roll at 33" wide x 53. 3'