The Schluter-Ditra-XL membrane is a polyethylene uncoupling membrane with intersecting ribs cut into a dovetail and coated with non-woven felt on its underside. It has a thickness of 5/16" (8mm) and offers the same features as the Schluter-Ditra membrane in supporting tiling and achieving durable installations. However, its greater thickness creates equal transitions between ceramic and 3/4 « thick hardwood flooring. Ditra-XL allows you to install ceramics on a single layer of plywood or OSB in constructions where the spacing between joints is less than 24" (610mm).