HEAVY 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.
12×8”, 14×8”, 16×8”, 16×10” and 20×10”
Eligible for 75-year
0,22% Code : W1 (< 0,4%)
0,50% Fulfill (< 1,5%)
Longitudinal 45,4 MPA
SO2 exposure test
Thermal cycle test
Freeze thaw test
Fullfil < 0,6%
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
NF 02/09 – Nº 17704
ATG H 571
|Value||ASTM Test Method||ASTM Grade|
|Flexure||915 lbs, Ave. thickness 0.292 in.||C-120-15||S1|
|Weather Resistance||0.0006 in.||C-217-15||S1|
Eligible for American Slate’s limited 75-year warranty.
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.