Spray foam insulation failing building regulations
Why it happens here
Part L requires insulation to meet specific thermal standards, and spray foam in a loft is difficult to assess because it hides the roof structure. In Clapham, many foam installations were done without building control sign-off, so they fail when a surveyor checks.
Our approach
We remove the foam completely, expose the timbers, and leave the roof space in a condition that a building control officer or energy assessor can properly evaluate. You get a clean slate to re-insulate to current standards.