Riverstone

Medium grey color with the slightest hint of green features a riven surface and coarse grain. The Solar Reflectance (SRI) meets the SRI requirements for Title 24, while the warranty is eligible for a 75-year duration.

Technical Specifications:
  • Weight: Approximately 720 lbs./sq.
  • Standard Deviation: 0.00
  • Solar Reflective Index (SRI): 16
  • Solar Reflectance: 0.18
    • Riverstone Main Image

    Formats

    Rectangular

    Sizes

    -

    Thicknesses

    -

    Weight

    Approximately 720 lbs./sq.

    ASTM Tests

    Value ASTM Test Method ASTM Grade
    Modulus of Rupture 82 MPa C-120 S1
    Absorption 0.11% C-121 S1
    Weather Resistance 0.1 mm C-217 S1

    All Vermont Slate Company® roofing products meet or exceed ASTM C-406 S1 Standards