CUPA 50

CUPA 50 is a non-carbonated slate formed by tectonic compression. Deep gray slate with thin laminations and very uniform smooth surface.

Split to an average thickness of 3/16” to 3/8”.

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CUPA 50 Main Image

Origin

San Vicente Quarry, Villamartín de Valdeorras (Ourense) Spain.

Operating since

Operating since 1999

Formats

Rectangular

Sizes

8”x6” to 24”x12”

Thicknesses

3/16” to 3/8”

ASTM Tests

Value ASTM Test Method ASTM Grade
Modulus of Rupture 606 lbs, Ave. thickness 0.237 in C120-19 S1
Absorption 0.073% C121-20 S1
Weather Resistance 0.0007 in C217-20 S1

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

Technical Specifications

Absorption
0,11% Code: W1 (< 0,6%)
Carbonate Non-Carbonated
≤ 0,4% Fulfill (< 2%)
Mor Characteristic
Longitudinal 58.1 MPA Transverse 60.5 MPA
SO2 Exposure Test
S1
Thermal Cycle Test
T1
Freeze Thaw Test
Fulfill < 0,6%

International Certifications

CUPA 50 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 228-41/01

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