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itcwinner

Hi,

This is my first post so go easy.

Upstairs in my house I currently have a main bathroom, with soil pipe that is in the bathroom (boxed in) and goes up through the ceiling/roof and into the sky, and an en-suite with a soil pipe that goes out through the wall and up the side of the house with a vent on top.

The en-suite is being removed, but the soil pipe from the ground to the vent at the top may remain. There would be no toilet or anything else wasting into this, it would just vent from the drain.

We need to remove the soil pipe from inside the main bathroom as the boxing in is taking up far too much room.

Can we:

because we have the vent from the other soil stack (the old en-suite) remove the soil pipe that goes up in the main bathroom and vents through the roof. If we were to do this would a Durgo valve be required in here? It seems that a Durgo valve has to be above the height of the sink waste (which would be half way up the wall) and makes the removal of the pipe/boxing in a bit pointless. Therefore could we just do without a vent from the main bathroom and just have the soil pipe going downwards perhaps an access point if it ever had to be rodded.

Any advice appreciated.
 
Don't take my word as gospel, but; If you have the open vent to outside on your redundant ensuite stack, then you can fit an air admittance valve on your main bathroom stack as long as your ensuite stack is upstream of your main bathroom. Check with Part H Building Regulations. Document available on line DCLG (Communities & local Goverment)
 
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