DIYbanter - View Single Post - Need to remove concrete floor in bathroom

johnnymo

wrote:
Norminn wrote:
wrote:
snip
......Thanks in advance for the responses.

A very puzzling scenario! You have the tub pulled out and found a
concrete slab beneath it and on top of wood rafters? Tub drains go
through the slab? Whole bathroom has concrete slab floor? Any chance
it is just an old concrete shower pan that someone put flooring over and
put a tub on top? What is there in the crawlspace that comes THROUGH
the slab? An old shower pan would be a very likely place for leaks and
rot, but I would hack away at a floor not knowing where I'm going.

He's saying "slab" but what I think he's looking at is a floor that was
done as a mud job, (where instead of concrete backer board, and layer of
tar paper expanded steel and a dry mix of concrete is put over the
subfloor).

Still, leaving that "slab" intact and just work on the damaged area is a
good point.

John
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Yea, so because I pulled that corner piece out which was cracked and
had separated from the "slab" I can tell that the concrete measure 3"
from wood to the top of the concrete. The top of the concrete is flush
with the rest of the house's subfloor. It is flush with the kitchen's
subfloor and the hallway to the bedrooms. The cast iron tub is sitting
on regular diagonal wood subflooring which is also flush with the top
of the concrete.

Can the concrete be poured between the joists and over the top of the
joists by a half inch making it flush with the rest of the house. If
so that would suck trying break that concrete out of there.

I obviously need to look at it more from the underside tonight to
figure out if this is going to be worth it or not. Let me take a look
tonight. The other bathroom (1/2 bath) only has a two inch slab and is
in good shape.