I’d like to add a downstairs WC is it possible with the soil stack location?

startingout2016

Il do my best to describe -

I have a Victorian end of terrace with a 70’s addition on the back which houses the kitchen.
Above the kitchen is the bathroom.

The soul stack runs down the corner of the bathroom to the corner of the kitchen and is internally boxed in.

The floor in the kitchen is screed.

I have space in the back room next to the kitchen to add a WC.

The WC can be plumber by running the hot and cold feed under the kitchen units directly to the location of the proposed WC.

However, the waste and soul will need to join up in the corner of the kitchen where the floor is screed.

Has anyone done similar and is this possible or if so will it cost a lot extra to do?

We are considering doing it now as due to damaged flooring in the kitchen everything is up so would make sense to do this now rather than towards the middle of the year which was when we were originally planning to start sorting it.

Another thing I was wondering is do I require a plumber to do the soil pipe work?
Or do I need a builder?

I already have carpenters, plasters and supply of the sanitary wear sorted

Jonesya

Is there space for the soil pipe and to provide enough fall into the stack?

Even if there isn't, you could always consider a macerate unit which pumps it away so letting you use smaller waste pipe and gives more flexibility on routing the pipework.

tacpot12

While a macerator does provide some extra flexibility in location, they need a power supply and can and do go wrong, so if you have the fall to use a full size waste, this would be the best option. The fitting needed to connect a full size waste might also be difficult to get into the corner if the existing soil stack has been run very close to the wall. Chasing out with a bolster may be required, but it's probably doable.

tacpot12

A pipe gradient of 1 in 80 is ideal, but if you can't achieve this you can go a low a 1 in 110. All this means that for every 80 (or 110) cm the pipe goes along, it should fall by 1 cm. If you can mount the toilet close to the wall between the kitchen and the other room, you should be fine as most toilets have the waste coming out at least an inch higher than the floor level, so if you can locate the toilet within 1.6m of the soil stack you should be fine.

J_B

Jonesya wrote: »

Even if there isn't, you could always consider a macerate unit which pumps it away so letting you use smaller waste pipe and gives more flexibility on routing the pipework.

tacpot12 wrote: »

While a macerator does provide some extra flexibility in location, they need a power supply and [STRIKE]can and[/STRIKE] do go wrong, so if you have the fall to use a full size waste, this would be the best option. .

Altered your post for you.