Trapped moisture and rot in roof timbers
Why it happens here
Foam sprayed between rafters or over felt stops air moving through the roof space. Odd Down's damp climate means condensation forms on the cold side of the foam and drips onto the timbers. Over several winters that moisture soaks into the rafters and can start rot.
Our approach
We remove the foam, restore the ventilation gap, and dry the timbers. A moisture meter reading is taken before and after, and we use a thermal imaging camera to confirm the roof space is drying evenly rather than just at the surface.