Closed cell foam hiding rafter rot
Why it happens here
Closed cell foam is rigid and bonds hard to timber. In a valley town like Milnsbridge, moisture in the air gets trapped against the rafters and cannot escape. Over time, the timber starts to rot, but you cannot see it because the foam is covering it.
Our approach
We remove the foam carefully with hand tools and inspect every rafter as it comes clear. If we find rot, we treat it or flag it for a joiner. We do not just pull the foam and leave you with a hidden problem.