Air flow from under slab around toilet flange

Discussion in 'Toilet Forum discussions' started by karlpenney, Jul 9, 2006.

  1. karlpenney

    karlpenney New Member

    Oct 23, 2005
    I'm finishing a basement bath and have just installed the toilet flange (ABS). I broke out about a 1/2" of concrete around the 3" drain pipe so I could install the flange over the outside. After installing the flange on top of the floor, there is still about a 1/4" gap around the hub underneath (you can see it a bit through slots for the toilet bolts). However, today I noticed that there is a small air flow coming up through this gap and its got me wondering where it could be coming from? It's NOT coming from inside the drain pipe. Is this something I should worry about or is there a simple explanation?
Similar Threads: flow under
Forum Title Date
Toilet Forum discussions Why is my fill tube diverted to flow under the foundation? Nov 21, 2011
Toilet Forum discussions What determines waterflow from underneath rim? Sep 26, 2009
Toilet Forum discussions Toilet for Ostomy. Single lever, low flow? Aug 28, 2017
Toilet Forum discussions AS 4058 overflow pipe issue Jun 19, 2017
Toilet Forum discussions Overflowing toilet May 22, 2017

Share This Page