Condensation trapped against roof timbers
Why it happens here
Spray foam seals the roof deck, so moisture from the house cannot escape. In Newport's older properties, the timbers are often original and more vulnerable to damp. The result is staining, then rot.
Our approach
We remove the foam, clear the ventilation paths, and check every rafter for moisture. Where timber is sound, we treat it and leave it exposed so it can dry. Where it is not, we replace the affected sections before signing off.