Am thinking of having my garage converted to living space but am concerned about the flat roof. Roof joists currently hang down 6 inches but have been informed that to get Buildings Control Certification this does not allow for correct depth of insulation internally and still allow for ventilation. Have been informed that possibly will have to have felt removed from roof insulation added to existing board, externally, then felt relaid.
Anybody come across this before.
Anybody come across this before.