Valdeorras Slate

Tectonic slate

A blue-black, dark grey slate with a documented natural-stone character. The recorded appearance includes layered cleavage. Recorded applications include roofing slate, cladding, paving and facade panels.

Stone familySlate

Primary colourBlue-Black

High verification · Reference STN-0000839

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Specification snapshot

Indicative catalogue data. Verify the exact stone, finish, thickness and current test certificates before specification.

Mohs hardness3-4

Water absorption0.2-0.6 %

Compressive strength80-160 MPa

Flexural strength30-60 MPa

Density2700-2900 kg/m³

PorosityNot reported

Material profile

Character & application

Common finishes: Natural split, sawn, honed
Typical uses: Roofing slate, cladding, paving, facade panels
Exterior suitability: Excellent roofing/cladding suitability
Frost resistance: Good
Recorded colour palette: Blue-Black, Dark Grey