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Unread 01-22-2015, 08:13 PM   #3
Peerless Tile
Tile Contractor
Join Date: Aug 2012
Location: Columbia,SC
Posts: 1,220
Looks to me like no pre slope under the liner and efflorescence beginning to rear it's head.....Basically a cesspool in your mudbed around the drain and mineral deposits leaching up through the grout. Do you have any idea if a preslope was put in under " black rubber thingy" to slope water that saturates the mudbed towards the weep holes in the drain? If yes, then more than likely the weep holes were not protected and are now clogged, not allowing the mudbed to drain properly. Not to be a total party pooper but.....Onyx is about the worst thing to use in a wet enviroment.
SC Greg
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