The outer metal plate of the insulation material has a gap at the upward junction, where rainwater can seep through poorly sealed joints and accumulate in stepped areas such as bosses, leading to corrosion under insulation (CUI).
The outer metal plate of the insulation material has a gap at the upward junction, where rainwater can seep through poorly sealed joints and accumulate in stepped areas such as bosses, leading to corrosion under insulation (CUI).