Shallow waste trap

27 Jun 2006
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United Kingdom
I am installing a free standing bath with a shallow waste trap - this will exit via 40mm pipe and will pick up a basin 1m or so down stream from the bath - both will empty into the waste stack (on one pipe).

I have heard that shallow waste traps should not be directly taken to a stack? how do I get round this - do I install a further p type trap further down the line?

Thanks :confused:
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Ho long is run to the soil pipe? Shallows trap is fine if it's shortish. Joining waste pipes can give problems with waste backing up into bath though.
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Good idea - had brain fade again :eek: .
What may not be obvious is that they stop water backing up into the bath.

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