Good evening all, Please refer to the attached image. the recessed section I will fill in the the level of the rest of the floor. Now the problem is.. I want to keep the entire ensuite floor seemingly one level, but slope the tiles as indicated. The stainless steel drain grate I bought is 20mm deep and My problem is with minimum screed thickness, I see two options: 1. Set a 20mm thickness minimum mortar bed everywhere with appropriate fall (probably 35mm around the edges of the room for...

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