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- #21
The product I used is from Home Depot. I believe it is called Red Devil. They sell it in the tile section. It used used to make a rubber liner in showers and waterproof walls. It works very well, I use it in all the showers and tubs where I install tile. You do not have to caulk the corners you can simply apply it and it will do the same thing I just like the corners fully sealed. (It makes me feel better) The above floor had two coats on the corners and joints and the two entire coats on the floor. I started with about 2/3 of a gallon and still have about a 1/3 or more left. I will put 1 more coat done before final painting. It runs about $50 for a gallon but it the best stuff I have found.