Trapped moisture causing rot in roof timbers
Why it happens here
Foam sprayed between rafters seals the roof void, so moisture from cooking, washing and breathing has nowhere to go. In Twerton's older terraces, the timber is already old and the roof void is shallow, so condensation sits against the rafters and rot sets in within a few years.
Our approach
We remove the foam completely, check every rafter with a moisture meter, and replace any timber that has started to rot. We then restore ventilation so the roof can dry out naturally, and we document the moisture readings for your records.