New bathroom - sink waste pipe leak

woodface91

Hi there, moving into a new build and we decided to install the bathroom sink ourselves, so the builders plumber left the waste pipe and hot and cold sticking out of the floor, we assumed this was good to go, so attached the sink, all fine.
We then found out after the taps were running that the waste pipe was simply emptying into our kitchen below. Surely the waste pipe should have been attached under the floor to something!?!?!? Am i missing something?

cheers

Pete*G_4

Not if you told them to leave it as you were doing it yourself!

There should be a waste pipe under the floor of the bathroom, you will have to lift floorboards etc as required to find it. It could just be that it's not connected or has moved and is now leaking. It'll be a "push-fit" connection, so just make sure the pipes are pushed into place properly.

Hard to help further without seeing the situation, but hopefully i've given you something to look at..

keystone

Pete*G wrote: »

Not if you told them to leave it as you were doing it yourself!

Quite

There should be a waste pipe under the floor of the bathroom, you will have to lift floorboards etc as required to find it.

Great big sheets of chipboard more like. LoL.

It'll be a "push-fit" connection, so just make sure the pipes are pushed into place properly.

Why will it be pushfit in preference to solvent weld or compression?

Cheers

woodface91

yes i said i was going to attach the sink, not do the rest of the pipe work under the floor, the hot/cold pipes are fine. As the floor is down and the waste pipe sticking out, i would have assumed that it was actually attached to something under the floor, otherwise just leave a hole.
I do not understand what the point is in putting in the pipework under the floor and then not attaching the waste to anything, so someone else has to come along and take the floor up. Hey i am just a crazy that way.

27col

You have made the classic mistake of assuming something what you thought might be the case, and not checking what was actually the case.
However, it does seem to be a strange thing to do, putting in a pipe and not joining it to anything. It could just be that the connection has come apart or it was never done right in the first place. No way to know except by getting the floor up and checking for yourself.

Wookey

As rest have said most likely to be a push fit joint that has been pulled out, probably down to the joiners fitting the flooring (highly likely if its 8x4 sheeting involved). If the basin is on an outside wall which has a soil pipe why not just take the waste pipe straight out the back of the basin rather than rip up floor? If the current waste has no other connections on it.

fox12

I'm sure under current building regs a builder cant just leave a waste pipe in the wall unconnected to a drain. If in doubt contact your local council and find out. If it was me i'd be wanting compensation off the builder or his company for water damage to the kitchen

keystone

fox12 wrote: »

I'm sure under current building regs a builder cant just leave a waste pipe in the wall unconnected to a drain.

But the key in this case was the "I'll finish the job" discussion between the OP and the builder which is not recorded here verbatim. Who knows if it was "stop right now and I'll finish irrespective of where you got to" or "I expect you to get that waste connected then stop" scenario or something in between.

If in doubt contact your local council and find out. If it was me i'd be wanting compensation off the builder or his company for water damage to the kitchen

TBH you'd be on a hiding to nothing in this case as there doesn't seem to be anything agreed in writing whether by VCO or on the back of a fag packet!

Cheers