This report summarises the main findings of the European Field Inspection survey 2002/2003 covering roofs in unpainted 55% Al-Zn metallic coated steel. The roofs inspected used 55% Al-Zn steel with a nominal coating weight of 20-25 µm. The results and predictions published are judgmental opinions, based on close visual observations by professional people with extensive experience in evaluating material performance. The results and predictions are not guaranteed or warranted.