CUPA 7

CUPA 7 is a non-carbonated natural slate formed by tectonic compression.

Black slate with thin laminations and a smooth surface.

Download Information Sheet

CUPA 7 Main Image

Origin

Quarry Arcas Prada. San Pedro de Trones (Leon) Spain.

Operating since

1968

Formats

Rectangular

Sizes

16”x8” and 16”x10”

Thicknesses

3/16” to 3/8”

ASTM Tests

Value ASTM Test Method ASTM Grade
Modulus of Rupture 742 lbs, Ave. thickness 0.304 in C120-19 S1
Absorption 0.181% C121-20 S1
Weather Resistance 0.0006 in C217-20 S1

All Vermont Slate Company® roofing products meet or exceed ASTM C-406 S1 Standards

Technical Specifications

Absorption
< 0,4% Code : W1 (< 0,4%)
Carbonate Non-Carbonated
≤ 0,2% Fulfill (< 2%)
Mor Characteristic
Longitudinal ≥ 55 MPA
SO2 Exposure Test
S1
Thermal Cycle Test
T1
Freeze Thaw Test
Fulfil < 0,6%

International Certifications

CUPA 7 roofing slate meets the following international standards:

C-121-20 (S1), C-120-19 (S1), C-217-20 (S1)

BS 680 Part 2

EN 12326

NF 02/05 - Nº 5277

ATG/H876

Image Gallery