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Replacing a toilet where waste is close to wall

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31 Aug 2025
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Hi,

I am looking to replace a downstairs toilet. The current set up is a waste pipe going vertically into ground through concrete. I looked to replace like for like, but the wastepipe is very close to the wall (~7cm) and with cistern pipe it woudn't fit. (The current set up is quite strained.) What other options are there? The current toilet comes out to a total depth from wall to rim of ~67 cm, and there is ~15 cm space either side. Water for cistern comes down from ceiling in front of wall to the right of cistern. Basically the whole thing is a mess...!

Seperately, this room has no sink (!) and I was wondering if I could plumb a waste outlet from sink into toilet outlet somehow rather than drill through wall to waste.

Thanks for any advice.
 

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Frame against wall and fit CC to it. You might have room to dig out the concrete and set back the vertical drop to the wall, more work though.
 
Close Couple pan and cistern should fit. Will probably be a gap between the cistern and the wall, use a piece of wood fixed to the wall to make up the gap, then fix cistern to that. Tile the top of the batten to finish.

Space Saving/Swan neck pan connector may get you more room to get the pan further back, but I don't think these come with a 32mm waste boss to allow a basin to be connected.
 
I had a large gap to fill
 

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