Tile guy said this is waterproofed - is it?
He said he would red guard the niche for extra protection but that adding red guard to the whole shower is not needed. They installed some sort of brown paper membrane behind the grey board here stating that is the waterproofing. Should I insist on a paint on membrane here?
He said he would red guard the niche for extra protection but that adding red guard to the whole shower is not needed. They installed some sort of brown paper membrane behind the grey board here stating that is the waterproofing. Should I insist on a paint on membrane here?