A superb example of a graphite natural roof slate, originating from Brazil. The Sobrano Dark Grey roof slate is durable, long lasting and has a naturally made smooth finish and obtaining top scores in testing.
Description: A dark grey / graphite slate with a natural flat finish
Origin: Brazil, South America
Size: 500mm x 250mm
Constancy: Compliant with CPR, Annex V - AVCP System 4
Tech spec: European standard EN 12326
Strength: Transverse: 37.10 N/mm2 Longitudinal: 38.90 N/mm2
Thickness: 5mm (±35%)
Water absorption: 0.386% W1
Freeze-thaw cycling: Not required
Thermal cycling: T1
Sulphur dioxide exposure: S1
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