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Validated Products
Attributes
  • Listee
    • Atlas Roofing Corporation
  • Manufacturer Location
    • Detroit, MI
    • Dubai, UAE
  • Category
    • Roofing Material
  • SubCategory
    • Underlayment
  • Certification(s)
    • ASTM D1970
    • ASTM E108 Class A
Documents

WeatherMaster HP-FLEX

WeatherMaster HP-FLEX is a polymer modified bituminous sheet material intended for use as underlayment. Underlayment is manufactured as a smooth polypropylene film surface coated with a self-adhering modified asphalt. Underlayment rolls have approximate dimensions of 66ft x 3ft. Underlayment is self-adhered.

Ratings

ASTM D1970
Product has met specification requirements of ASTM D1970.

ASTM E108 (Fire)
Product has met Class A requirements of ASTM E108 when installed over minimum 15/32in thick APA-rated plywood decks with allowable roof covers of asphalt shingles (ASTM D3462) or slate shingles (ASTM C406). Slope is unlimited.

Additionally, product originating from Detroit, MI manufacturing location has met Class A requirements of ASTM E108 when installed over minimum 15/32in thick APA-rated plywood decks with allowable roof cover of 26ga Steel Standing Seam Panels. Slope is unlimited.