Hail

The impact of hail can loosen, fracture and remove granules from your asphalt shingles. the granules protect the asphalt matting of your shingles from sunlight and ultra violet light (UV). The asphalt will deteriorate extremely fast once exposed to the sun. This is the primary reason a hail damaged roof will prematurely fail. Hail damaged roofs may or may not show up immediately as visual damage to the inexperienced observer. The results of a hailstorm will void the shingle manufacturer's warranty, as they do not warranty against "Acts of God" such as hail storms.

Sun

Heat and ultraviolet rays cause roofing materials to deteriorate over time. deterioration can occur faster on sides facing west or south.

Rain

when water gets underneath shingles, shakes or other roofing materials, it can work its way to the roof deck and cause the roof structure to rot. Extra moisture encourages mildew and rot elsewhere in a house, including walls, ceilings, insulation and electrical systems.

Wind

High winds can lift shingles edges (or other roofing materials) and force water and debris underneath them. extremely high winds can cause extensive damage.