What does hail damage look like on asphalt shingle roofs?
Areas of lost mineral granules will be apparent, with more severe granule loss on roof slopes facing the direction from which the hailstones fell (or blew) during the storm. Inspecting an asphalt shingle roof shortly after a hail storm, if the roof has been damaged, should show that the areas of mineral granule loss have exposed “fresh” looking shingle substrate – the asphalt impregnated shingle substrate will not yet have been weathered by sun exposure.