Plastic 40-60 yrs. Fiberglass 40-60 yrs. AC rough-in Same as Duct work. ROOF Asphalt shingles 15-25 yrs. Deterioration subject to climate.
Granules come off shingles.
Wood shingles and shakes 10-40 yrs. Contracts and expands due to climate. Tile 30-50 yrs. Tendency to crack on sides. Slate life High quality.