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natural american slate roofing

Roofing

Riverstone

Medium grey colour with the slightest hint of green. Riven surface and coarse grain.
riverstone slate

Characteristics

Color

Medium grey colour with the slightest hint of green

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Surface

Riven surface and coarse grain

Solar Reflectance (SRI)

Meets SRI requirements for Title 24

Warranty

Eligible for 75-year

Technical Specifications

Weight

Approximately 720 lbs./sq.

Standard Deviation

0.00

Solar Reflective Index

16

Solar Reflectance

0.18

Note: The weights given above are based on a 2″ double headlap (DHL). For a 3″ DHL add 7-5%.
All American Slate roofing slates are pre-dilled with two nail holes.

ASTM Test

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

Eligible for American Slate’s limited 75-year warranty.

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Need advice?

We welcome your inquiries and would be delighted to have the opportunity to discuss why American Slate is the right choice for your next project — and for our times.