I tore out one of the bathrooms in my condo back to the studs earlier this
year because the inspection report showed the shower pan was leaking. The
tile man we used said he could install the whole bathroom for us including
the durock for the shower walls, the pan, floor, etc. So we went with him.
Since the installation was complete, we've always had trouble with the
shower floor. The grout won't stay, it discolored in places, and some tiles
cracked. The original tile guy wasn't much interested in our satisfaction,
so I looked up a tile journeyman/technician I know from a ways back who
knows tile in and out. He took up the tile last night and guess what we
found in the floor mud bed? Wood! Yeah, two slats of wood (actually a single
2x4 ripped diagonally to form angeled ramps). He apparantly put the wood in
to use to level the sloping mud floor against. This is not even pressure
treated wood, mind you.
Our assumption is that the expansion and contraction of the wood is what
cause the floor tiles to move and thus continually crack the grout.
So my questions:
1. In order to document this as substandard construction, can anyone point
me to sources showing the wood is NEVER considered acceptable practice for
use in a shower floor? Or is this acceptable practice somewhere in the US?
2. Can anyone confirm or deny the truthfullness of this statement: In a
properly constructed shower pan, there should never be standing water 16
hours after the time of last shower use.
Thanks for any sources. -- tom c