UNCOUPLING MEMBRANE is a polyethylene membrane with a grid structure of square cavities, each cut back in a dovetail configuration, and an anchoring fleece laminated to its underside. UNCOUPLING MEMBRANE is bonded to the substrate using thin-set mortar. The anchoring fleece on the underside of UNCOUPLING MEMBRANE is fully engaged in the mortar to provide a mechanical bond to the substrate. Tile is installed over UNCOUPLING MEMBRANE using the thin-bed method in such a way that the mortar becomes mechanically anchored in the square, cutback cavities of the UNCOUPLING MEMBRANE matting. 

Designed specifically for ceramic tile and dimension stone installations, UNCOUPLING MEMBRANE serves as an uncoupling layer, waterproofing membrane, and vapor management layer that accommodates moisture from beneath the tile covering. Further, DITRA performs all these functions while still providing adequate support/load distribution for the tile covering.