MCRMA - Online CPD - Guidance Document GD35: Assessment and Evaluation of Cosmetic Imperfections or Damage

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In this online CPD, approved by the CPD Certification Service, you will learn about the assessment and evaluation process of aesthetic quality in metal roofing and cladding systems, particularly identifying and addressing cosmetic imperfections or damage. It will explain that “aesthetics” relates not only to the intended appearance of a building’s façade and roof but also to how visible defects, such as scratches, dents, colour variation or distortion, are perceived and judged. CPD points are awarded on completion of an online questionnaire at the end.

The CPD provides practical guidance on how to inspect and evaluate such imperfections in a consistent and objective way. It emphasises the importance of viewing conditions, including distance, angle and lighting, to ensure that defects are assessed fairly and not exaggerated by close inspection or unusual light conditions. It also recognises that acceptability can vary depending on building type and visibility, with higher standards often expected for prominent or architectural façades.

Key topics include dimensional tolerances, panel alignment, joint consistency, and colour uniformity, all of which influence the overall visual quality. The CPD also explains common issues such as oil canning (surface waviness), dents, dishing around fasteners, and scratches, outlining causes and potential remedial actions.

Finally, it highlights the importance of early identification, documentation, and consultation with manufacturers before repairs are undertaken, especially where warranties may be affected. The outcome will be knowledge and understanding that helps to ensure consistent standards are provided for visual acceptance in metal-clad buildings.