Schluter® DITRA-PS ROLL 3'2-3/4" X 34'3/4" = 110 SFDITRA PS is the peel and stick version of Schluter's original DITRA uncoupling membrane same four core functions (uncoupling, waterproofing, vapor management, load distribution), but without the thin set mortar step on the underside. You peel the release liner, press it onto a clean substrate, roll it flat, and you're ready to tile. On a typical bathroom job, that saves 3045 minutes and eliminates an entire bag of mortar. The 110 SF roll (3'2 3 4"