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Posted by RickH on October 5, 2007, 11:26 am
> Need suggestions on flooring for 2nd floor laundry room. It is part
> of a big remodel, but we are finishing floors ourselves. In remodel
> plumber put a drain in center of the floor (big laundry room, 12x18)
> He also laid that thick shower floor membrane over entire floor. Now
> we want to finish with ceramic tile. How do you put ceramic tile
> over shower pan membrane? As it stands the membrane is just laying
> on the plywood floor.
> Options:
>
> Pull up membrane, put down cement board, put membrane over cementboard
> then put tile over membrane. Obvious problem is, does the thinset
> bond to the membrane??
>
> Could just put cement board over membrane, essentially rendering
> membrane useless with all the screws through it.
>
> Any other suggestions.. it is too big of room to put down "cement" or
> cementlike covering over membrane, then tile on that like you would do
> in a showerpan.
>
> will not be attempting to slope floor to drain, too tough on such a
> big floor, and water on floor would be very infrequent, it is just a
> safety drain, so not worth sloping.
You could do 2 things:
1) Treat it like a big mudded shower pan and do the drain exactly like
you would do a mudded shower pan, (drain with weep holes), and slope
the whole room. Google for how to build a mud shower pan. Might not
be able to use the extra large tiles but anything smaller than 8x8
should be fine.
2) If the drain is (hopefully) directly over the spot where you want
to put the washing machine(s), then you could just pan that area and
drop the wasing machines in it, to prevent a 2nd floor flood
catastrophy. Then just floor the rest of the room with hardwood (as
hardwood likes to sit on vapor barriers) directly over the membrane.
Bamboo is supposed to be pretty good with splashes, etc.
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