I did post once before in property section, but things have moved on a bit.
I own a tenanted mid terrace house. The next door neighbour contacted me to say he had water coming down his bedroom wall following heavy rain.
He had a roofing company out who say there is no problem with his roof ( it is relatively new). They suggested that the problem might be due to water ‘siphoning’ in from my roof.
Their leak is on a wall which is at right angles to my house. The water is coming in around 3’ away from my roof, but I understand that water can travel far from the original entry point. There is no leak or dampness in my house.
I wanted to cooperate, and know that water ingress can cause huge problems, so had someone round a few days later. He noticed that the ( shared) down pipe, which is attached to neighbour’s wall, was blocked, and cleared that. That would have been close to the point of water entry.
We had heavy rain shortly after, and all was ok.
A few weeks later the problem reoccurred. The neighbour mentioned a blockage at the end of another ( shared) gutter. The part which was blocked is actually attached to his house, but drains along mine to another down pipe, and seemed to flow ok. I had it cleared, although there wasn’t much debris.
It didn’t solve the problem.
I have had my roof visually checked from my loft, and from the outside via a ladder, and there is no obvious problem. I haven’t paid for scaffolding so that they can go right onto the roof ( neither did the neighbour).
The neighbour is looking to me to fix the problem.
The roofers who checked his property didn’t mention the blocked gutters and down pipe, and they only said the water ‘might’ be getting in via my roof.
I do empathise with him, having had a difficult to locate leak in my home, but am I being unreasonable to say that I am happy for his roofers to check my roof
( the absolutely lovely tenants are very amenable) and if they can identity where the water is coming in I will willingly fix it if it is from my property, but otherwise I have done what I can?