2. Does the garage owner have any responsibility in helping to sort
this out?
Personally, I would have thought that the garage owner is liable for the
damage and should fix his own guttering at his own expense. I might go
further and suggest they would be liable for the damp damage to your
property, too, although I wouldn't push my luck with this if I wanted to
maintain good relations.
You're not allowed to drain your buildings onto your neighbours' walls.
Christian.
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