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Hi All, Can anyone advise to where I stand with building Regs, if I was to cut the Soil Vent pipe off below bath level and fit a one way admittance valve. If this is not possible due to Regs what size can I reduce venting pipe down too.
Said Soil Pipe has One toilet bath and sink waste entering it.
Many Thanks John
Said Soil Pipe has One toilet bath and sink waste entering it.
Many Thanks John