Connecting wastepipes into main soil pipes below existing concrete floor

[Minto]

This is my first forum post and thank you in advance for any advice possible.

The pipework beneath our cloakroom washbasin is unsightly and the 40mm downpipe goes straight downwards to the floor - it's all visible and a mess. I am wanting to fit a new waste trap and route the 40mm downpipe behind the plasterboard wall and skirting board; with everything out of sight amd nothing at floor level because we are having floor tiles fitted.

I have removed the concrete at the foot of the downpipe and found the back edge of the main soil pipe is flush with the skirting board and only 20mm or so under the floor level. It therefore won't allow the new downpipe to enter from above. What would be the best way to route the new 40mm downpipe into the main soil pipe? Can it enter from the side?

Thanks.

 

[muggles]

Yes, you can go in from the side, although I can't imagine how you're proposing to get to it!

 

[coopersim]

Doesn't look like you have a lot of room spare but one option would be to create a stud wall in front of the existing wall to conceal the pipe work in.

 

[Nige F]

Stand a pedastal under the basin

 

[dilalio]

Boxing, cabinet or pedestal to hide waste pipe is the easiest option.

Otherwise you'll have to dig out the floor to expose the 4" but before you do this you need to see inside the existing soil pipe how much vertical depth you've got! If it bends directly below current surface you'll need to trace back to straight pipe until you can get a connection on it which means more digging through screed and harder concrete, without destroying the pipe when trying to expose enough to get on it!