Attic conversion chimney wall wet patches

Mustache40 · Post by **Mustache40** » Tue Sep 26, 2023 9:16 pm

Hello,
Need help and advice . I’m having problem with wall in one of the bedrooms . When it’s raining the wall have wet patches all over. Had a roofer and fixed everything possible , water tight whole chimney as was in poor condition , changed tiles all around but still no change to patches. Any advice .?? Help

aeromech3 · Post by **aeromech3** » Wed Sep 27, 2023 11:28 am

Patches appear random over large area, is this an end wall and if so a picture?

Mustache40 · Post by **Mustache40** » Sun Oct 01, 2023 9:20 am

Hello,
No it’s not an external wall ,it’s opposite. Shared wall and chimney. The window is to the room where the wall is and that is the chimney that was apparently fixed as was in very poor condition. Tiles on my side been changed and underlay put also.

aeromech3 · Post by **aeromech3** » Sun Oct 01, 2023 3:29 pm

Well cannot suggest anything other than the obvious that water is tracking down but its random pattern needs to be investigated such as plashes from poor skylight seal.

Mustache40 · Post by **Mustache40** » Sun Oct 01, 2023 3:49 pm

Well, the guy seems to not seeing anywhere that water can get through.

wine~o · Post by **wine~o** » Sun Oct 01, 2023 4:15 pm

Well the lead flashing looks to be running onto some sort of mineral felt ? sure the are opportunities for water ingress there. Flashing doesn't look to be 100% either.

also missing 1/2 tile width bottom right of the last pic where it meets the skylight.

Get another roofer in ?

Mustache40 · Post by **Mustache40** » Sun Oct 01, 2023 5:50 pm

Story short , the third picture that was job done but stains were still coming through. So he came and put that apparently waterproof flashing on top of tiles still did not help. Like you see he done just half of the chimney as I did not wanted to do whole chimney as neighbours not nice and should be shared job , so you understand. But then I just ran out of the option and I said do whole chimney and funny enough was really sunny not raining for weeks and once he done other side the patches were really bad as my roofer told me chimney so bad as sucking all the water and comes out on my wall which proof him right.
But then this .all seems to be fairly sealed but still having problems…. And he is now trying find out if neighbours using the fire place as he said gas can cause dampness too and wet wood. :-/

Mustache40 · Post by **Mustache40** » Sun Oct 01, 2023 5:51 pm

Plus I had few other roofers and as many roofers as many different advices and I m lost as I paid fair amount of money

aeromech3 · Post by **aeromech3** » Mon Oct 02, 2023 2:58 am

We can discount the Velux type skylight installation, if there are any of the damp patches above the hight of the Velux top?