Michael Petruccelli asks; Roofs are always a big question mark, what are some of the roof basics?(6)

Michael Petruccelli says;  Do you see signs of damage from wind, hail, or mechanical impact? Shingles may be torn, missing worn from tree branches,have holes or punctures, or may be cupping and curling at the edges. Ice damming commonly occurs when melting snow refreezes at the roof's overhang and will cause shingles to deteriorate prematurely. If in doubt about any observed deficiencies, contract your insurance company and schedule an adjuster to conduct an inspection free of charge.