Generally, a metal roof will stand up well to hail storms. The roof sheeting will absorb the energy of the hailstone and remain structurally sound. However, indentations may occur along with loss of the paint topcoat. In most cases indentations from hailstones do not affect the life of a COLORBOND steel roof. The only causes of concern will arise from: – Low pitch roofs with significant hail indentations in the pans. This can lead to ponding and dirt accumulation, which may promote corrosion. – Low pitch roofs where sheet overlaps have been significantly deformed. The anti-capillary effect can be lost and water could be drawn into the sheet lap, resulting in corrosion. In the event of ponding due to indentations or damage to sheet overlaps, the affected sheets should be replaced as soon as practicable to maintain the life of the roof. Loss of the paint topcoat arising from impact of hail stones will be an aesthetic issue only and will have no appreciable effect on the corrosion performance of the COLORBOND steel roof.