Two product standards apply to fiberglass-reinforced asphalt
shingles: ASTM D3018, "Standard Specification for Class A Asphalt
Shingles Surfaced With Mineral Granules," and ASTM D3462, "Standard
Specification for Asphalt Shingles Made from Glass Felt and
Surfaced With Mineral Granules." I consider ASTM D3462 generally to
be more stringent than ASTM D3018.
ASTM D225, "Standard Specification for Asphalt Shingles (Organic
Felt) Surfaced With Mineral Granules," applies to organic-mat
reinforced asphalt shingles.
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