![natural-american-slate-roofing natural american slate roofing](http://americanslate.com/wp-content/uploads/2020/08/natural-american-slate-roofing.jpg)
Roofing
CUPA 12
CUPA 12 is a non-carbonated slate formed by tectonic compression. Dark gray slate with thin laminations and a smooth surface.
Characteristics
Color
Gray
Surface
Smooth
Sizes
16”x10” to 20”x10”
Thicknesses
3/16” to 1/4”
Warranty
Eligible for 75-year
Technical Specifications
Water Absorption
< 0,16% Code : W1 (< 0,4%)
Carbonate non-carbonated
≤ 0,23% Fullfil (< 1,5%)
Mor characteristic
Longitudinal ≥ 55 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
![french standard](https://americanslate.com/wp-content/uploads/2020/08/french-standard.png)
French Standard
02/09 – Nº 17704
![british standard](https://americanslate.com/wp-content/uploads/2020/07/british-standard.png)
British Standard
BS 680 Part 2
![ce marked](https://americanslate.com/wp-content/uploads/2020/07/ce-marked.png)
CE marking
EN 12326
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.