dtp replied to dtp's topic in Residential and Commercial lettings/Freehold issuesThanks for the feedback. We have a professional surveyor friend who is willing to give an opinion, and once done as you say, there's no reason not to inform insurers. And as Eric's brother says, that will also give us, hopefully, a more specific discussion with neighbours. No, we can't view the neighbour's roofing from where we are, and neither can they as it's under their conservatory (we always thought it was a bad move on their part to cover felting with a conservatory!) Interesting that council have enforcement powers, hadn't realised that. I've also had a builder advise, without visiting the site, that the dividing wall (which may be double-skinned) should have waterproof capping, which it doesn't; so maybe a simple solution is to install that across top of both sides. Anyway, some next steps for us to take so thanks again.
We have a damp problem in a party wall in a Victorian terrace. Both I and my neighbour have single storey extensions at the back (actually the front, but the back as originally built...) with roof terrace / patio area above, and a brick wall dividing the two terraces. This is standard in the road. (They also have a small conservatory joined to the first floor over part of their roof terrace) Some years ago we noticed that the internal party wall below the terrace was showing some signs of damp. We asked the neighbours if they had noticed a similar issue but they refused to engage with us. We hoped it was a condensation issue, and it was only occasional. Over the years the dampness has got more frequent, and a couple of years ago we had our terrace completely redone, with the old flooring removed, new felting put down, new lead flashing, and decking on top. I stripped the wall below back to plaster and re-papered and painted. Last year the damp returned, but much more noticeably. We use a dehumidifier and can "extract" a couple of pints of water from the downstairs hallway sometimes - regardless of weather. There is black mould at the top of the wall, and it's clear the damp is coming top-down. I've lifted all our decking, put sealant along all felt joints, and silicone sealer between the lead flashing and brickwork that forms the dividing wall between terraces. Since then there've been occasions when there has been surface water running down the wall, even when it's not rained. We're pretty certain it's when the neighbour waters plants on the terrace. The neighbours still won't engage, but we have persistent black mould, the paper is peeling off and the wall is wet from the top. To check it's not our roof, at times when the wall has been dry I've thrown buckets of water at our side of the dividing wall on the terrace (and this obviously drains down onto the felting below the decking). The downstairs interior wall is unaffected by this - confirming the problem is coming from the neighbour's side. So what to do? Is this something we should be referring to our insurers? If the neighbours fail to fix the root cause (which is presumably perished roofing under their conservatory, or blocked drainage etc), is there anything we can do to stop it affecting us? The internal wall is structural so I'm not really sure how a builder would approach the problem without access from the neighbour's side too. We're planning on selling within the next 2 - 3 years but in its present state it's hard to see how someone would take it on, at least without a big price drop. Any suggestions very welcome!