DMC 550S 24ga (min) Steel is a non-structural metal roof panel. Product is Galvalume or Drexlume composition. Product is a snap-lock standing seam profile. Product uses Fixed Clip for attachment to structural deck.
ASTM E108 (Fire)
Product has met Class A requirements of ASTM E108 when installed over minimum 19/32in thick APA-rated plywood decks with minimum single-layer of Atlas Roofing FR-10 Fire Retardant Slipsheet and minimum single-layer ASTM D226 Type II, ASTM D4869 Type IV, or other underlayment that is listed for use with Class A. Slope is unlimited.