Roof rot from trapped moisture
Why it happens here
Foam sprayed directly onto the underside of roof tiles seals the void and stops warm, moist air escaping. In Thornton Heath's older roofs, the felt and battens stay wet for months, and rot sets in from the inside where nobody can see it. By the time a damp patch appears, the damage is usually well advanced.
Our approach
We remove the foam in sections and inspect the timbers as each one comes clear. Minor decay is treated on site, and any rotten rafter or batten is replaced before we finish. We photograph every stage so you can see exactly what was found and what was done.