12:21PM | 08/12/05
Member Since: 08/11/05
1 lifetime posts
Cape style house 1950. Have full basement.

Directly above bath is accesable Cape eave.

Bath wall is tiled 1/2 up behind toilet.

2 Bathrooms are not above each other.

bath down stairs is in middle of house at front and toilet and sink do not have vent.

drain goes into floor, to basement, angles into drain pipe which runs along wall to corner, where top bath drain comes in, then out to septic.

Toilet bubbles all the time. Big blooping bubbles that splash up to toilet cover.

More we flush more big bubbles.

Toilet also fills up when flushed and 50/50 whether it will have enough pressure to actually flush down.

How do I add a vent to this if toilet drain is cast going into cast drain in basement?

Wife's bathroom, please help!!



12:39PM | 08/12/05
Member Since: 07/01/03
558 lifetime posts
Not only is you toilet and sink unvented, the septic system has no vent either. The gases of decompostion rising through the toilet causing the large bubbles. Adding vents to a cast pipe system is possible, but a difficult job for any DIY. Add in the fact you need to route a 1-1/2 inch vent line to the roof and you will need to add in some carpentry and roofing skills. One approach is to cut the cast pipe and add a PVC section with a Y or T to provide a vent, then just complete the vent to the roof.

Or you could use metal fittings:



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