Description
ASTM Tests
| Value | ASTM Test Method | ASTM Grade | |
|---|---|---|---|
| Modulus of Rupture | 616 lbs. at 0.249 in | C-120-06 | S1 |
| Absorption | 0.139% | C-121-06 | S1 |
| Weather Resistance | .0004 in. | C-217-94 | S1 |
All Vermont Slate Company® roofing products meet or exceed ASTM C-406 S1 Standards
