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.
8”x6” to 24”x12”
3/16” to 3/8”
Eligible for 75-year
< 0,4% Code : W1 (< 0,4%)
≤ 0,2% Fullfil (< 2%)
Longitudinal ≥ 37 MPA
SO2 exposure test
Thermal cycle test
Freeze thaw test
Fullfil < 0,4%
All American Slate roofing slates are pre-dilled with two nail holes.
C-121 (S1), C-217 (S1), C-120 (S1)
BS 680 Part 2
|Value||ASTM Test Method||ASTM Grade|
|Modulus of Rupture||616 lbs. at 0.249 in||C-120-06||S1|
|Weather Resistance||.0004 in.||C-217-94||S1|
Eligible for American Slate’s limited 75-year warranty.