Installation and the Complete Roof System
The visible shingles are only part of the roof. ARMA’s asphalt shingle roofing-system guide describes components such as the deck, underlayment, flashing, and ventilation that belong in the overall discussion.
Ask how those components and the installation details are performing. An assessment should distinguish a problem with the shingle surface from a concern at a roof connection, penetration, or concealed area. A material name alone cannot establish installation quality.
