Vermont Black and Gray/Black

Vermont Black and Gray/Black slate is a medium to heavy texture stone with a medium to dark gray color and darker, linear markings. This slate is separated into the darker (Vermont Black) and lighter (Gray/Black) to provide the desired depth of color. While this slate does not weather into a multicolor roof, you may get some bronzing in the lighter parts of the slate over time.

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ASTM Tests

Value ASTM Test Method ASTM Grade
Modulus of Rupture 611 lbs. at 0.253 in C-120-06 S1
Absorption 0.163% C-120-06 S1
Weather Resistance .0019 in. C-217-94 S1

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

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