Silly question, but am about to order the waste pipe to re-plumb my ne
bathroom, and cant for love nor money remember which pipe to use fo sink, showers and bath! 32mm or 40mm? Will be using solvent.
Someone please point me in the right direction.
-- Cordless Crazy
40mm for baths, and kitchen sinks, other outlets can use 32mm, though there shouldnt be a problem if you use 40mm for all. Alan.
40mm for bath and shower 32mm for basin (sink) are the most usual sizes for bathroom wastes.
I think shower traps usually come in 40mm only, and basin wastes seem to default to 32mm. If it's a pedestal basin, space could be very tight for the trap, so I'd go for 32mm - you could always increase to 40mm somewhere downstream if it's a very long run. I see you can now get WC pan connectors with a branch to accept basin waste pipe - seems vaguely risky to me.
32 for the basin, 40 for bath/shower and the main run to the stack for all bathroom waste.
Bob
Where from (interested) ??
Many thanks. (Very small toilet with no access to waste other than toilet connector!)
The message from "Autolycus" contains these words:
If both sink and bath waste was connected by this route would not an anti-syphon device also be needed?
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