Roof timber rot from trapped moisture
Why it happens here
Foam sprayed directly onto roof timbers traps condensation that would normally escape through ventilation. In Holgate's older roofs, the timbers are already 80 to 100 years old, so rot sets in faster than you would expect.
Our approach
We remove the foam carefully with dry ice blasting, inspect the timbers, and flag any rot before we leave. If rot is found, we recommend a joiner and can return once repairs are done.