The code deals with three main types of aluminium corrugated and troughed sheet used for the roofing and cladding of buildings. Information is given on fixing accessories, contact with other materials, weathering, thermal insulation, fire resistance and condensation. Its recommendations deal with minimum pitch side and end laps and methods of fixing; laying techniques are fully described. Tables of recommended load requirements, diagrams of sheet profiles and tables of section properties and weights are given in an appendix.