We have an unusual problem with rainwater coming out of a capped
> chimney at the back of a victorian house. The chimney stack is no
> longer there and has been replaced by a slate roof.
>
> We've been trying to work out where the water is coming in and why it
> is doing a 90 turn to come out the airbrick.
>
> We have had a roofer look at roof over the capped chimney a while back
> but he couldn't see a problem.
>
> I couldn't find any posts related to this sort of problem so I'd be
> grateful for any more knowledge that people have concerning this. >
> The background to why we are concerned is that the water from the
> airbrick runs down onto a slate roof above the kitchen. Water is
> getting between the kitchen roof and the brickwork and leaking into
> the kitchen. While we can fix this problem (and hopefully keep the
> kitchen dry) we are concerned as to why there is water coming out the
> airbrick in the first place.
>
> Thanks
>
> E. Varnell
Hi EMV,
This is only happening when it rains ? Are you looking in the right place for leaks ? The rain water may be coming from a blocked guttering trough and overflowing down over the back and then down the surface of the masonry and through to the inside through the airbrick.
It could also be coming through the old joints in the masonry and you may need the wall repointed again. Not actually seeing the site and the positions of things is a real pain and makes this type of diagnoses almost impossible over the net. So these are just some suggestions of what could be. Widen your search of the roofing materials and you may find that it is further away from the spot you think it is coming from.