"Wes Groleau" wrote in message
...
On 11-15-2013, 12:59, Ivan Vegvary wrote:
Inherited a bathroom project. Basement, slab floor, shower pan installed
(32in x 32 in) already installed but on a slope. It is about 3\8 in. out
of level. My odc prevents me from not correcting this even though it does
drain. Three options.
1. Pull pan and level concrete slab.
2. Pull pan and carve away on fiberglass ribs.
3. Pull pan and shim (possibly roof shingles) floor.
All advice appreciated. Note: There is no shower stall yet. Just pan
with surrounding studs. Pan has not been affixed to studs.
Ivan Vegvary

Get the pan level and fasten it securely. Prevent bending or breaking by
filling the space under it with something reasonably solid. Shims would
leave gaps into which the heels of the average adult human would push the
pan's material.

Your dimensions work out to 192 cubic inches, or a little over a tenth
of a cubic foot. Volume of five or six caulking gun tubes. RTV should be
solid enough if surrounded so it can't bulge out. Harder substances
preferred. But you'll need tubes to squirt it farthest from the opening,
so you don't trap air behind it.

Or carefully mix 192 cubic inches of filler, pour it in, then push the pan
into it. Push a little at a time so as to get it level. Let the stuff
harden, then remove any leakage. (Most of which will squeeze into the
raised border of the pan.)

--
Wes Groleau

I had a shower pan that rocked (wiggled) back and forth as you stepped on
it. What I did--got the base level and then sprayed underneath it with foam
(from a can, similar to what is used around electrical boxes etc). It
expanded completely filling the space under the base and then oozed out of
the base. When it hardened I just trimmed all the stuff outside of the
base. Worked great, base solid as a rock.
MLD