Trapped moisture and rot in roof timbers
Why it happens here
Foam sprayed directly onto the rafters blocks the gap that lets the roof breathe. In Bath's damp climate, condensation builds up through the winter and soaks into the timber. After a few seasons, rot sets in.
Our approach
We cut the foam back to the rafter faces, clear every ventilation gap, and check the timber with a moisture meter. Where rot is found, we tell you exactly what needs replacing before any new insulation goes in.