talk to your rep/salesman about how much of their product equals dolomitic lime. I see that some in here have said 1ton = 8 tons. The stuff we bought...
I read what he said and it wasn't near as controversial as the headlines tried to make it sound. Pretty much like the majority of shit folks on here...
I just don't see how it could be moisture. The tile is at least a foot from the shower and there are tiles between the shower and the pictured tiles...