Feb 15, 2011 6:13 am
I have two old toilets, which have an 'S' trap has a vent pipe (50mm) running directly from the S bend, out the exterior wall and up to a vent pipe to the roof. Also there is a 100mm vent stack pipe about 10 meters away from the location of the toilets. Is this vent pipe still required if install new toilets? Any information would be appreciated. Thanks.
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