Outlines the history of pre‐coated metal cladding, its use and the causes of failure. Discusses the process of manufacturing and the types of coating available. Examines the causes of failure, looking at loading requirements, span requirements, substrate type, profile, fixing requirements, pitch, coating type (external and internal faces), design life, site environmental conditions, insulation standards, packaging, handling and storage conditions and evidence of suitability. Suggests that there remains a need for improved national and international standards, the existence of which would help to ensure that products are properly selected for the intended building use, resulting in fewer cladding failures and a simpler method of allocating responsibility in the event of disputes.
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