Roofing
CUPA 3
CUPA 3 is a blue black slate with a slightly gritty texture, and in some samples well defined parallel lines are clearly visible on the cleavage surfaces.
Its extra thickness of 7-8 mm gives it the perfect strength to withstand any weather conditions while boosting the value of any property.
Characteristics
Color
Black slate
Surface
Riven
Sizes
12×8”, 14×8”, 16×8”, 16×10” and 20×10”
Thicknesses
7-8 mm
Warranty
Eligible for 75-year
Technical Specifications
Water Absorption
0,22% Code : W1 (< 0,4%)
Carbonate non-carbonated
0,50% Fulfill (< 1,5%)
Mor characteristic
Longitudinal 45,4 MPA
SO2 exposure test
S1
Thermal cycle test
T1
Freeze thaw test
Fullfil < 0,6%
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
French Standard
NF 02/09 – Nº 17704
Belgiam Standard
ATG H 571
ASTM Test
| Value | ASTM Test Method | ASTM Grade | |
|---|---|---|---|
| Flexure | 915 lbs, Ave. thickness 0.292 in. | C-120-15 | S1 |
| Water Absorption | 0.118% | C-121-15 | S1 |
| Weather Resistance | 0.0006 in. | C-217-15 | 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.