I have a walk-in shower in black pebbles, the rest of the bathroom floor is seagrass but it rotten because of too much direct water supply (seal silicol with T in Alu not waterproof because peel off pebbles). I want to replace the seagrass with a smooth concrete look, but it is essential that the joint between the rollers of the shower and the concrete floor is waterproof to prevent any infiltration: is it possible to pass a glazier at a time on the material concrete look and my shower rollers to unify the tightness of the whole without breaking; what type of glazer should I use?
You comfort me in my prejudices against showers in Italian... when they are not well done. I do not really believe in your idea of vitrifying the floor of the shower and the rest of the floor (this would make them very slippery when wet). Anyway, a concrete floor can be wet without damage if, after use of the shower, good ventilation is ensured in the room (I think it is the main cause of the rotting of your seagrass). In fact, it seems rather that it is the lower seal of the door of your shower that is involved (if there is a door). As for the watertightness between the pebble part and the concrete part, you just have to leave a casting space (with a rod of 2 to 3 mm), then fill it with waterproof mortar, or silicone sealant.
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