Just moved into a new house, which has two toilets
The first toilet is upstairs in the bathroom and has a soil pipe which is inside the house (boxed in) and comes through the roof (all the houses round here are like that - approx 25 years old)
The Second Toilet is at the back of the house downstairs in the utility room/downstairs toilet, this toilet appears to go straight into the ground and has no vertical stack with a vent on it.
Now my plan is to add an en-suite bathroom above the utility room which puts the new toilet more or less directly above the downstairs toilet. My question is what do I do with the soil pipe? Do I need a vent on it? Should it have a vent on it? Can I have an internal vent with a one way valve on it or can I just go straight down into the ground like the downstairs one does?
Thanks in advance
The first toilet is upstairs in the bathroom and has a soil pipe which is inside the house (boxed in) and comes through the roof (all the houses round here are like that - approx 25 years old)
The Second Toilet is at the back of the house downstairs in the utility room/downstairs toilet, this toilet appears to go straight into the ground and has no vertical stack with a vent on it.
Now my plan is to add an en-suite bathroom above the utility room which puts the new toilet more or less directly above the downstairs toilet. My question is what do I do with the soil pipe? Do I need a vent on it? Should it have a vent on it? Can I have an internal vent with a one way valve on it or can I just go straight down into the ground like the downstairs one does?
Thanks in advance