Schluter All Modified Thin Set Mortar Grey 50 lb Seta50g

This is All Modified Thin Set Mortar Grey, a modified thin-set mortar made for Schluter membranes meeting ANSI A118.15H, and it also passes A118.4H and A118.11. A 50 lb bag gets you 150 sq ft with an 11/64" DITRA trowel bonding the membrane down. Setting tile on top is a different number: 60 to 70 sq ft with a 1/4" x 1/4" notch setting tile over DITRA. You get 20 to 30 minutes of open time. Pot life is 2 to 4 hours. Foot traffic after 24 hours. Grout after 12 hours. Do not exceed 1/2" embedded thickness. Back-butter anything 12" x 12" or larger. Approved substrates are concrete, plywood and OSB, masonry, and Schluter membranes and boards. Keep it off moisture-sensitive stone such as green marble. Glass tile and backed stone need a word with Schluter first. This is the one modified mortar Schluter warrants on both sides of a DITRA or KERDI assembly. A generic modified mortar on top of the membrane sits outside their recommendation, because it cannot air cure trapped between the tile and the sheet. Both the Mississauga and Barrie stores carry it.