Plumbing

Can we move the toilet in our ensuite but retain same entry to soil stack?

Anonymous user 16/03/2024 - 2.49 PM

We have a family bathroom with a shallow bath for the children, a basin and wc. Our ensuite next to it and connects to the same soil stack in a block of flats. We have a concrete floor so all plumbing is above it. We want to remodel our ensuite, which now has a bath, basin and wc, adding a separate shower (instead of shower over the bath). This would involve repositioning sanitary ware. The basin would be about where the bath is and the bath where the basin is, so I hope straightforward. We can fit a shower in IF we move the wc about 165 cm further from the stack than its current position and turn it 90 degrees. The new distance to the soil stack would be about 190 cm Several issues arise, so I would appreciate advice from experts. 1. The shower tray has to be raised because of the concrete floor. The toilet waste pipe running over the concrete would have to be raised further, but this could become a bench in the shower. The run under the shower cubicle would be about 125 cm, so no joins. Easier access to the waste pipe from either end of the shower. Otherwise the boxing in would have to be undone. 2. I assume that the ensuite and family bathroom toilets are connected to the soil stack with a corner branch soil pipe. To retain the existing connection, the new toilet waste pipe would have to reach the same position as the existing. So there would have to be extra fall from its new location to the existing location. How much extra fall would we need? Can we achieve this by fitting a wall hung toilet bowl, with a higher centre of drainpipe? 3. There is an added drain from the shower, which is positioned about where the existing toilet is, very close to the soil stack. Is this a problem? Am I missing anything? I hope it's feasible, but would rather know if it isn't now, rather than further into the project. Thank you.

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all above is fine if the bath and sink are just changing places the waste going into the Stack isn't going to be any different so they will be fine moving the toilet could cause an issue but if you cant get enough fall just fit a plinth under the toilet to raise it by 50mm which then creates a better fall for the toilet waste - no biggie at all and should all be fine :)

Answered13 February 2023

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