Granite™ Coastal PVDF is a polyvinylidene fluoride pre-coated steel from ArcelorMittal for roofing and sidewall applications. Designed for use in coastal environments, Granite™ Coastal PVDF combines resistance to ultraviolet (UV) rays, colour retention, and resistance to chalking.

Twenty-year exterior exposure (weathering) standards include:

• Film integrity:  Exposed surface paint film shall have no evidence of cracking, flaking, or checking to an extent that is apparent from ordinary outdoor visual observations.
• Chalking:  Degree of chalking will not exceed rating #8 when measured per ASTM D4214, Standard Test Methods for Evaluating the Degree of Chalking of Exterior Paint Films.
• Colour change:  Change in colour will not exceed five units when measured per ASTM D2244 from a clean surface.

While available for galvanized ASTM A653, Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process, zinc-coated steel or Galvalume® ASTM A792,  Standard Specification for Steel Sheet, 55?% Aluminum-Zinc Alloy-Coated by the Hot-Dip Process, aluminum-zinc alloy coated steel, the latter is recommended in coastal applications.

Granite™ Coastal PVDF is available in smooth finishes with standard or customized colours, including energy-efficient solar reflective formulations and mica/metallic finishes.

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