Old toilet plumbing system

[gphreak]

Hi all,

I have had a downstairs bathroom moved upstairs, I am now looking to make the old bathroom into an office, however, the old toilet plumbing system is still in place, I would have just taken it out but the kitchen is still plumbed in through the wall.

I have an idea but just wanted to ask if it is a viable option and see what you guys think, take a look at the images below (click for bigger size)...





...Looking at the second image, the idea is to place the pipe as far into the wall as possible and cut a hole in the floor along the red dotted line, then place the live pipe in the floor and seal it back in with a bit of concrete, the rest of the system would be cut flush to floor level and then capped off.

So what do you guys think? ...also I'm not sure how I'm going to cap it yet, maybe there is a standard sized cap for this kind of thing?

Thanks in advance.

 

[Hugh Jaleak]

You can get a cap for the grey pipe, although i'd advise fitting an access point there though just in case you need to get at it in future. (The Osma drain part 4D527 is suitable for this.)

Waste can be put under the floor but needs replacing with solvent weld waste. (I wouldn't put those compression joints under concrete in case they leak.) Dont advise trying to bury it in the wall, box it in if you really dont want to see it. Make provision for access as sink wastes can and do block. You dont want to be pulling the floor up to get at the pipe...

Assume new bathroom soil pipe is ventilated properly, that is an air admittance valve in the end of the pipe in the pics. It may be there for a reason.

 

[gphreak]

You can get a cap for the grey pipe, although i'd advise fitting an access point there though just in case you need to get at it in future. (The Osma drain part 4D527 is suitable for this.)

Waste can be put under the floor but needs replacing with solvent weld waste. (I wouldn't put those compression joints under concrete in case they leak.) Dont advise trying to bury it in the wall, box it in if you really dont want to see it. Make provision for access as sink wastes can and do block. You dont want to be pulling the floor up to get at the pipe...

Assume new bathroom soil pipe is ventilated properly, that is an air admittance valve in the end of the pipe in the pics. It may be there for a reason.

Thanks for the reply.

In regards to burying the pipe in the wall I probably didn't explain myself enough, the pipe comes through the wall from the kitchen, and so I was just going to chisel the bottom of the wall away to try and push the bend further into the wall (hope that makes sense) - I really didn't want to box it in but rather get the piping close enough to the wall to dot and dab plasterboard over it (along with the rest of the wall)

Your remarks on the piping blocking up has made me think a bit more though, I'm thinking it might be worth taking the time to scrap the idea totally and run the kitchen pipe directly outside through the back wall of the kitchen, this would then allow me to remove all remaining plastic from the office room. This would require extra ground drainage being installed outside but probably worth it in the long run.

The new bathroom runs into a standard soil pipe which is now on the other side of the house, the soil pipe has the correct ventilation.

 

[Hugh Jaleak]

Hope I haven't given you a headache! Last thing you need is a neatly hidden pipe and then a sink that wont empty. Chemicals can be dangerous and plunging is not guaranteed to work. Kitchen sinks by their nature tend to have a lot of food scraps and grease washed down them, can be a recipe for problems. Even with access provided, cleaning out a sink waste is not something you want to be doing over a nice carpet

It does seem you'd need a couple of bends at least if the current arrangement was to be realigned, sods law says any blockage will be where the plumbers snake cant get to it..... Its just my thoughts, but wouldnt be the first job where half the surrounding area has had to be demolished to get at a problem.....