CUPA 4

Tectonic roofing slate

This material is recorded as a slate in blue-black tones. The recorded appearance includes natural cleft, fine laminated texture. Recorded applications include roofing, rainscreen cladding, wall cladding and paving.

Stone familySlate

Primary colourBlue-Black

Medium / needs supplier validation verification · Reference STN-0000928

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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 absorption0.1-0.6 %

Compressive strength80-200 MPa

Flexural strength30-70 MPa

Density2700-2900 kg/m³

PorosityNot reported

Material profile

Character & application

Common finishes: Natural cleft, sawn, split, honed
Typical uses: Roofing, rainscreen cladding, wall cladding, paving, landscaping
Exterior suitability: Excellent for roofing and cladding if certified
Frost resistance: Generally excellent for roofing-grade slate
Recorded colour palette: Blue-Black
Slab variation: V2 Slight variationSlight variation: subtle changes in tone or texture may occur.