Roofing Materials

Exterior roof coverings including asphalt shingles, metal, tile, and single-ply membranes. Asphalt products contain petroleum distillates and may include recycled content with contaminants.

Why It Matters

Hot asphalt application exposes workers to hazardous fumes. Some roofing materials contain PFAS for water resistance. Lead may be present in older or imported materials. Runoff affects water quality.

Chemicals of Concern in This Product

Ingredient Red Flags

Watch for these on ingredient labels:

  • Hot-applied asphalt (worker exposure)
  • PFAS-containing coatings
  • Recycled content without screening
  • Lead flashings

What to Look For

  • Metal roofing (durable, recyclable)
  • Clay or concrete tile
  • Fiber cement shingles
  • Cool roof coatings without PFAS

Finding Safer Options

Metal roofing, clay or concrete tiles, slate, fiber cement. Avoid built-up roofing with hot asphalt application when possible.

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