Shower Waterproofing Crash Course
2017-9-27u2002·u2002The shower floor would have a copper or lead pan, a rubber liner, or a 'hot-mop' tar waterproofing underneath the tile. Tar paper was stapled to the walls underneath the mud. While this method is still practiced today over the years those mud walls have more commonly been replaced with cement board and fiber cement backer board.
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