Slate Example

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Information

A top-quality, premium grade slate from the northern border region of Maine and Canada.

A full 1/4" thick, and smooth in texture, this dark grey slate is very similar in quality and appearance to the legendary Unfading Black formerly quarried in Monson, Maine.

It originates from Quebec, Canada.
  • 100% natural product
  • Exceptionally durable, 100-year useful life
  • Proven historic performance & aesthetically pleasing
  • Non-combustible—Class A Fire Resistant
  • Resistant to acid rain, ultra-violet light & chemicals
  • Withstands freeze/thaw cycles & high temperatures
  • Rated Class 3 and Class 4 Hail Impact Resistance (3/4 to 2 inch ice balls)

Lengths (inches)

24

22

20

18

16

14

12

Widths (inches)

12

11,12

10. 11, 12

9, 10, 11, 12

8, 9, 10, 12

7, 8, 9, 10, 12

6, 7, 8, 9, 10, 12

Exposure (3" Headlap, inches)

10.5

9.5

8.5

7.5

6.5

5.5

4.5

Thickness (inches)

Nominal 3/16

Nominal 1/4

Nominal 3/8

3/16–3/8 Medium Texture

Pounds per Square

750 - 750

850 - 950

1200 - 1300

850 - 1000

ASTM

ASTM Rating S1

Breaking Load

Water Absorption

Depth of Softening

This Slate*
712 Pounds
0.160"
0.0010"
ASTM Standards:
575 pounds minimum
0.25% maximum
0.002" maximum
*As tested by ASTM. Test report available upon request.
More than a roof. It's a Legacy.