DIY Doctor

Main navigation

Leak on pitch roof around pipe on grade listed property

Postby Syvid » Sat Nov 13, 2021 6:21 pm


Just moved to a grade listed property and we noticed a leak coming from around this pipe. Obviously it seems obvious that the crack in the mortar is most likely causing the leak but I am also not convinced of how they did the flashing on the side. Surely it should have been lead flashing instead of all mortar over the membrane, no?

What would be the best way to fix this without redoing it all?

Rank: Labourer
Progress to next rank:
Posts: 1
Joined: Fri Nov 12, 2021 6:44 pm

Postby stoneyboy » Sun Nov 14, 2021 10:17 pm

Hi syvid,
With the soil pipe so close to the wall it will be difficult to make it watertight. You could try one of the pitched roof flashings for 110mm pipe but it would have to be bent up the wall and fitted under the artificial slates. It’s probably easiest to cut the pipe about 200mm above the highest roof tile - this will make fitting the flashing easier - then use a straight coupling to rejoin the pipe.
Regards S
Rank: Project Manager
Posts: 4939
Joined: Wed Dec 10, 2008 6:44 pm

Display posts from previous
Sort by
Order by

  • DIY How to Project Guides
  • DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!

  • Related Topics