The roof of this building boasts the record for the longest single continuous length of kal-zipregistered. It comprises 400 sheets, each 117.5m long, laid eaves to eaves. The continuous kal-zipregistered outer sheet has no end laps and is free of drilled fixing holes over the entire area. Throughout its life the roof will be able to move and flex quite independently of the insulation. There is no thermal shear, and the properties and stability of the insulation are retained.