Wet brickwork around soil vent pipe

[barki]

Hi all,

I noticed this today - the damp patch around the area where this soil vent pipe enters/exits the brickwork.

It's quite high up there so I'm not exactly rushing to grab my ladder. May opt to hire a scaffold tower.

Anyway, can anyone tell if this looks like this is just condensation and/or rainwater that's run down from the top point of the vent and therefore maybe just needs a little point to drip away from the building fitted onto the elbow.

Or....does this look likely to have come from inside the pipe? The pipe adjoins the vent stack inside the eaves which has a toilet and shower waste installed in the attic conversion, it does have a fall from the point you can see to the back of the toilet, thankfully. So I'm pretty sure that isn't waste water visible on the bricks.

Maybe it's a bit of a tall order to ask for diagnosis via a picture taken 30ft away!

 

[barki]

P.s - looking in the eaves, I can see that the breeze block on the inside of this is dry.

 

[Daveydub]

Yo probably u have a leak, probably on the elbow into the wall.

 

[Madrab]

If it's dry internally then it can only be the elbow on the pipework is leaking rainwater.

What an exceeding strange setup though TBF. Why did they make the vent that size and not make it smaller and then just run it up internally. Is it just me or do they have those sockets upside down, or is it SW, cant really tell.

 

[Daveydub]

Could it be not damp but an area of brickwork came loose when soil was drilled and was bricked up again?
Is there a joint in the soffit above this area and water is penetrating the roof and running down the soffit to the join?