SchluterÂ®-DITRA is a polyethylene membrane with a grid structure of square cavities, each cut back in a dovetail configuration, and an anchoring fleece laminated to the underside. The anchoring fleece is embedded in thin-set mortar to provide a mechanical bond to the substrate. Tile is installed over DITRA using the thin-bed method in such a way that the mortar becomes mechanically anchored in the square, cutback cavities of the matting. Designed specifically for ceramic tile and dimension stone installations, DITRA serves as an uncoupling layer, waterproofing membrane, and vapor management layer that accommodates moisture from beneath the tile covering. DITRA-XL is 5/16â€ (7 mm)-thick to create an even transition between typical 5/16â€ (7 mm)-thick tile and 3/4â€ (19 mm)-thick hardwood flooring. DITRA-XL allows for ceramic tile application over single layer plywood/OSB subfloors on joists spaced at 24â€ (610 mm) o.c. and Can be installed on top of concrete, plywood, OSB, gypsum, existing vinyl floors, structural planks, sub-floors, and radiant heated floors. Quick and easy to install; few tools required and ready to receive tile immediately. Sold by Square Foot (1 linear foot = 3.28sf)
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