Trapped moisture causing roof timber rot
Why it happens here
Spray foam blocks airflow through the roof space. In Woodthorpe's shallow-pitched roofs, there is little ventilation to begin with, so moisture from the house accumulates and soaks into timber. Rot can start within two to three years.
Our approach
We remove all foam, inspect every rafter and treat any rot. We then improve ventilation so the roof can dry out. If timber is too far gone, we replace the affected sections.