Berkshire is a self-sealing laminated asphalt shingle. Shingles are manufactured with 2 layers of fiberglass mat coated with asphalt on both sides, and surfaced on the weather-exposed side with mineral granules. Shingles have approximate dimensions of 38in x 18-3/4in.
Product has met specification requirements of ASTM D3462.
ASTM D3161 (Wind)
Product has met Class F - 110mph (177km/h) requirements of ASTM D3161.
ASTM D7158 (Wind)
Product has met Class H – 190mph (306km/h) requirements of ASTM D7158.
ASTM E108 (Fire)
Product has met Class A requirements of ASTM E108 when installed over minimum 3/8in thick APA-rated plywood decks with minimum single-layer of ASTM D226 Type I, ASTM D4869 Type I, or ASTM D6757 underlayment or other underlayment that is listed for use with Class A asphalt shingle. Slope is unlimited.
Product has met Table 1 (Physical Requirements) and Table 2 (Additional Requirements) of ICC-ES AC438.