Spray foam insulation failing building regulations
Why it happens here
Foam sprayed directly onto rafters blocks the ventilation gap that Building Regulations Part L requires. In Bromley's older roofs, this means the loft no longer meets the required standard and cannot be signed off for a conversion or extension.
Our approach
We remove the foam fully, restore the ventilation path at the eaves, and document the finished roof space so your building control officer or surveyor can see the timbers are sound and the gap is clear.