PresentationCUPA 17 is a non‑carbonate natural slate formed by tectonic compression. Dark grey colour with regular flatness. Contains very slight metallic inclusions that are non‑oxidizing. Splitting available in nominal thicknesses of 3.5 mm, 4.5 mm and 7.5 mm.
Colour / Texture- Colour: Dark grey
- Texture: Smooth
Formats and thicknessesFormats: from 25x15 cm up to 50x45 cm
Thickness: 3.5 mm, 4.5 mm, 7.5 mm
OriginRozadais quarry. Casayo, Carballeda de Valdeorras (Orense), Spain.
Start of exploitationIn production since 1960.
Selections- Excellence
- Roofer
- Natural
- Innovation
ModelsThe most common model in Europe is the rectangular model.
International certifications- EN 12326
- 08/01 Nº24945
- ATG/H657
- BS EN 12326:2014
Characteristics / Technical specifications- Water absorption: 0.08% (Code: W1 < 0.4%)
- Carbonate content (non‑carbonate): 0.60% (Complies < 1.5%)
- Average characteristic breaking load (longitudinal): 53 MPa
- SO2 exposure: S1
- Thermal cycle: T1
- Frost resistance: Complies (< 0.6%)
- Colour: Dark grey
- Texture: Smooth
- Nominal thicknesses: 3.5 mm; 4.5 mm; 7.5 mm
- Formats: 25x15 cm up to 50x45 cm