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In case anyone is interested, this is a standard way showers are done here in North America. When talking to some of the guys here based in the UK, I learned that possibly this method isn't used anymore and many tilesetters haven't seen this done.
So here are a few photos to show the waterproof liner we install under the floor of the shower, then some photos showing the https://www.tilersforums.com/forums/tile-adhesive/ going in on the walls and then the waterproofing sheet continued up from the floor.
So here are a few photos to show the waterproof liner we install under the floor of the shower, then some photos showing the https://www.tilersforums.com/forums/tile-adhesive/ going in on the walls and then the waterproofing sheet continued up from the floor.