Connecting to an existing salt glazed system

[Richard C]

I have a mid 60’s property with the original sanitary ware. The downstairs loo is cemented directly into a salt glazed stand pipe, feeding a salt glazed foul drain, buried in the concrete floor. I am about to modernise & add a shower cubicle or, preferably, a walk in shower flush with the floor. The existing W/C stand pipe is set too far away from the wall to accept a modern cistern so it will need to move + the shower will obviously need a waste connection.

The existing drain runs the full depth of the house into an inspection hatch around 8 meters away in the back garden so providing a new, PVC drain is not the simplest of solutions. I am unsure of what I will find when I dig up the floor & concerned about how to go about connecting to the existing system or even if this is possible.

Is it be feasible to remove & replace the existing stand pipe with a modern PVC one, closer to the wall & is it possible to connect this to the existing salt glazed drain pipe? Where do I connect the shower waste (1 ½ m away) into the existing system – i.e. do I need to go before the loo or can I take the shortest route which will bring it after the loo? There is an existing sink waste connected before the loo but it disappears into the concrete floor so I am unsure how this connects into the existing system, should I connect into this? Is it likely to be enough depth to do this?

 

[doitall]

easiest way is to fit Y branches under the floor, run the pipe to under the shower and using an adapter reduce the pipe down level with the floor.

If you wanted a walkin shower you could fit a floor gully into the finished surface

 

[Richard C]

easiest way is to fit Y branches under the floor, run the pipe to under the shower and using an adapter reduce the pipe down level with the floor.

Are you saying that old salt glazed soil pipe sytems will accept new style PVC fittings allowing me to connect a new shower drain to it & replace the W/C standpipe as well?

 

[doitall]

I didn't say that, but you can indeed get convertors for salt glaze to plastic

 

[Richard C]

I didn't say that, but you can indeed get convertors for salt glaze to plastic

Perhaps I went on a bit in my original post but I was mainly concerned about accessibility & compatibility of modern PVC products with the salt glazed stuff, many thanks for clearing that up. I have since established how deep the soil pipe is within the screed & I should not have any problems with connecting the shower waste either so all I have to do now is get the Kango out!