Flooring Tile - Shower membrane install

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Dave Malo
07-21-04, 07:20 AM
I recently installed the shower drain for a customer shower pan in my basement. The drain is level with the existing concrete floor. To install the membrane is it possible ti\o lay it on the exisiting concrete or should I lay addtional mud down and slop it towards the drain. If I don't what problems would I run into if any.

thanks

ee3
07-21-04, 01:45 PM
it should slope 1/4" per ft. to drain per the plbg. code and the TCA guidlines.With out the slope (or if the weep holes are pluggedd) the membrane will always hold approx. 1/4" of water that will lend itself to mold ,bactiera growth,grout turning black.In some cases the wall board starts to wick up water then the mold grow's in the gavity,people get sick ,take you to court and sue ya till your "living in a van down by the river!!!