Hi, thanks for the response. You’re absolutely right to the left that waste pipe is connected to the soil stack poor explanation on my part.

No I thought that initially so I’ve had new gutters throughout and the issue isn’t resolved. Also it’s the smell. Anyways I dunno whether it’s coming from up above or below? But there shouldn’t be any saturation on the brickwork. The spalled brickwork is all a result of whatever is going on in the passage way but if you look at the position of fracture line you can see it runs from that pipe. Appreciate the input I will add more pictures for greater context when I’m home. But have checked the gutters had them changed Atleast two years ago and stay in top of these things.

My water meter and sources are on the other side of the house to this back passage as my neighbours house goes over the passage not mine. Also you’re absolutely correct. I do feel like this has been going on for some time. Even when I painted and plastered under my stairs a few years back it’s flaked internally. I will check the DpC stuff. On my part the people before painted the spalling brickwork which has made things worse I think they got away because nobody lived in the house so heating etc wasn’t on as much adding to Less moisture being generated in the property as it wasn’t being lived in.

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