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Tileguy
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Hi Jimmy,

If you poured the mud base you made it way too thin. Hopefully you placed the mud. Did you also put a pre-slope of mud under the membrane? I don't understand what is wrong that you think you need to skim with something. If it's just a bit, you can use thinset, but no more than 1/8" buildup at a time.

Is the backer spaced up from the membrane so it doesn't wick old shower water that gets thru the floor and on the membrane? No need to apply anything over the thinset/taped seams. It wouldn't hurt if you did cuz you're not applying to the entire wall. Would have been better if you had omitted the visqueen and applied the membrane on the surface.

Jaz
 
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