Roofing
CUPA 14
A heavy texture, non-weathering and unfading stone with a level of quartz that provides a glistening sheen.
CUPA 14 is the only product approved as an alternate for Buckingham Slate on historic restorations by the National Park Service, Virginia Department of Historic Resources and Historic.
Characteristics
Color
Dark gray
Surface
Riven
Sizes
8”x6” to 24”x12”
Thicknesses
3/16” to 3/8”
Warranty
Eligible for 75-year
Technical Specifications
Water Absorption
< 0,4% Code : W1 (< 0,4%)
Carbonate non-carbonated
≤ 0,2% Fullfil (< 2%)
Mor characteristic
Longitudinal ≥ 37 MPA
SO2 exposure test
S1
Thermal cycle test
T1
Freeze thaw test
Fullfil < 0,4%
All American Slate roofing slates are pre-dilled with two nail holes.
International Certifications
ASTM
C-121 (S1), C-217 (S1), C-120 (S1)
British Standard
BS 680 Part 2
CE marking
EN 12326
ASTM Test
| Value | ASTM Test Method | ASTM Grade | |
|---|---|---|---|
| Modulus of Rupture | 616 lbs. at 0.249 in | C-120-06 | S1 |
| Absorption | 0.139% | C-120-06 | S1 |
| Weather Resistance | .0004 in. | C-217-94 | S1 |
Eligible for American Slate’s limited 75-year warranty.
Projects Gallery
Want a slate sample?
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.