My plumber just told me that the shower pan has to be installed and waterproofed for the rough-in inspection. I’m using a Kerdi foam pan kit, and since I can’t rock the shower walls before the inspection, I’m kinda in a chicken or the egg situation. How do the Kerdi pros handle this, or is this pan waterproofing requirement something that only happens here in the Banana Republic of DC?
Thanks,
Z
Replies
You can't really put a test on the shower drain unless the membrane is installed so your plumber is right.
In remodel situations, we have just installed the first 3' of Durock and installed the pan. The inspector has been okay, but they do comment sometimes. You could probably just rip the first sheet down to 18" or so, which would give a lot more room for inspection.
Still, they could fail you and I see some justification for a failure. If they can't see it, how can they inspect it?
If I were you and I had my doubts, I would call the building dept. and ask them what they recommend. What County are you in, or is this in the district?
Jon Blakemore
RappahannockINC.com Fredericksburg, VA
I've done what John says, sorta. Install the pan, install 6" of the Durock (tho' I use DenShield), kerdi the pan and curb as a unit. Later, the wall Kerdi is installed to overlap the pan Kerdi. Everybody's happy.
Mike Hennessy
Pittsburgh, PA
Everything fits, until you put glue on it.
Cool beans. My plumber got back to me last night, and said basically the same thing, but also that the inspector is actually pretty cool, so we might be able to talk him into approving it without the showerpan being Kerdi'ed. Do either of you have problems with the Kerdi sticking to the Denshield or Durock? I've read on the John Bridge forums that CBUs can be more finicky when using Kerdi over them. Z
No problems with Denshield. Heck, it's made for thinset to stick to it. I do mix up the thinset a bit wetter than I would for tile, though.Mike HennessyPittsburgh, PAEverything fits, until you put glue on it.