Loss of Roof Shingle Mineral Granules
(Asphalt shingles, tar and gravel, slate, tile, what?) Please post a sharp photo showing me the roof above the area in your photo. Also tell me the country and city of location and the age of the building and I'll be glad to comment further. On by J . New roof as of 11/2020. Contractor since has gone to court, can't contact.