If more than one fitting is blocked the problem is probably in the soil stack
or main drain.
The toilet should ideally be located on an outside wall, so that it can be connected to the existing soil stack
The soil stack
must carry gases from inside out, and the HVAC unit must bring either inside air out or outside air in, or both.
They also need to stand on a level, firm surface and be close to an internal soil stack
or outside wall.
The leak was on the soil stack
of the toilet, which made it very difficult to detect.
In their findings, the experts said contaminated droplets could have been drawn from the soil stack
into a flat's bathroom through a dried-out floor drain when an exhaust fan was running with the door closed.
The leak has been identified as coming from the soil stack
and this will be replaced this week.
Don't connect the drains to the main soil stack
until you've pressure-tested the system.
The vent stack (4) is the upper extension of the soil stack
Tenders are invited for HRA - P1560 - Todds Nook and Westgate Court Soil Stack
The rot in the wood around the soil stack
and the periodic water that dribbled down to the ceiling below probably weren't caused by a roof leak.
These services include drain unblocking and jetting, soil stack
and waste pipe unblocking, drain repairs, drain re-lining, CCTV drain surveys and septic tank services.