PVC Vs ABS

Cruiser · Jul 30, 2007

Hi,

I've taken up the slab in basement to plumb new bathroom and am curious as to which type of drain pipe is best for under concrete PVC or ABS? Which do you use and why?

Thanks

Master Plumber Mark · Jul 30, 2007

PVC Sch 40

It dont really matter under the concrete,

if you make some runs to some re-vents above concrete

I prefer the PVC sch40 becasue it does not

catch fire as bad as the ABS...

abs burns like a log, PVC only smoulders

both will last about 450 years

Sponsor · 2022-01-29T12:20:58-0800

GrumpyPlumber · Jul 30, 2007

master plumber mark said:
It dont really matter under the concrete,

if you make some runs to some re-vents above concrete

I prefer the PVC sch40 becasue it does not

catch fire as bad as the ABS...

abs burns like a log, PVC only smoulders

both will last about 450 years

ABS, on the other hand, doesn't expand or contract like PVC...here we use pvc almost exclusively.

Basement_Lurker · Jul 31, 2007

PVC and ABS are both readily and equally available here both at the suppliers and at the home centers; but ABS is the norm here for residential drainage. And most guys seem to use the cellcore stuff. I get an upset look every time I make the guys at the supply house get solidcore ABS because its high up on the pipe racks.

hj · Jul 31, 2007

pipe

The only looks you would get here would be quizzical ones, because no one stocks PVC. And PVC emits toxic fumes when it burns.

Lancaster · Jul 31, 2007

Conversely,we are not allowed to use ABS here,the inspectors rationale is that ABS gives off noxious fumes when it burns.Nobody here sells any ABS except for the trailer supply houses.

GrumpyPlumber · Jul 31, 2007

Interesting topic, when people from all across the country can chime in.
I'd rather use ABS, because it doesn't expand/contract like PVC...yet nobody has it stocked here, despite the fact that it's legal...makes ya wonder why it's different from one area to the next?

PVC Vs ABS

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