Adam Harrington

Thank you for the help. I only have a 63mm stud wall to run it in, there’s a bedroom behind so no option to put it in a cupboard. if I was to put a 110 aav on the downstairs stack, and then a aav trap on the en suite basin. Is that enough or would it be pointless because of the 2 toilets upstairs?

Excuse my terrible scetch 😂 toilet would be the end of the run, would it be ok to tee off further down the run, immediately change to 50mm and run the 50mm up inside the stud wall to the loft?

Thank you. Would you tee off the 110 and immediately change to 50mm? And then send the 50mm into the loft?

Ah okay, thank you. With it been a stud wall I thought to make it accessible in the loft if ever needs be. If I leave it just above the toilet it will be inside the stud wall.

I guess a 50mm one would be better than nothing right? So would you tee off the 110 with a t piece, and then convert to 50mm and send that up?

Hi, I have extended on the side of my house where the original soil stack was so now it is incorporated into the downstairs utility. I’ve put a small en-suite above so I need to run the soil pipe up the wall, across the joists and up to the toilet. This will be boxed in My problem is, there’s no option for the soil waste to vent outside so I need to put a aav somewhere. Pictures show the position of soil pipe and the red Cross is the proposed toilet position. there’s a stud wall behind the toilet, would two 50mm wastes up to the loft be sufficient? any other ideas? thank you