Roof timber rot from trapped moisture
Why it happens here
Foam applied directly to the underside of roof tiles or between rafters seals the roof and stops it breathing. In Ealing's damp winters, condensation forms on the cold timber and cannot escape. Over several years the rafters stay wet, surface mould appears, and the timber starts to soften.
Our approach
We remove the foam in sections and inspect every rafter as we expose it. Surface mould is treated on site. Where rot has gone deeper, we document it with photographs and tell you what needs replacing before any new insulation goes in, so you are not covering up a problem.