Bricklaying & Repointing

Damp and mould on outside wall - repointing or external insulation?

Anonymous user 3 March 2024 - 3.03 PM

I've had a damp problem on the side wall of my house ever since some building work was done about 4 years ago. It's a victorian mid-terraced house in Hackney and there's a narrow passageway between us and the next house - it's this wall that has damp. There's old bomb-damage to the wall, which must have been partly rebuilt at some point as the brick changes colour half way up and there are large round metal plates which look like they are strengthening the wall. The 1st floor bathroom and 2nd floor shower room are both on this wall and have had horrible damp problems (made worse by a shower leak), there's also been pink damp patches on the hallway and stairwell. The only place without damp is the main entrance hall which has a radiator against that wall. Assuming all the leaks are fixed, and it's not a guttering problem what would be the best way to tackle this - repoint the outside wall or fit external insulation? Or is there another way? Really appreciate any suggestions.