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With fantastic looks and low water absorption qualities, the Calidad 85 slates are perfect for those looking for the best in performance and stability without neglecting the completed appearance. The Calidad 85 range of slates are sourced from Quiroga in Northern Spain, which is in one of the world’s leading slate producing regions. These slates are also easy to grade, giving an easy installation.
Data Sheet
| Water absorption | W1 |
| Non carbonate carbon content | In accordance <1% |
| Mechanical resistance characteristics (MoR) | Transversal 48N/mm2 Longitudinal 54N/mm2 |
| Calcium carbonate content | Complies <1% |
| Dimensional tolerances | Complies |
| Thermal cycle | T1 |
| Exposure SO2 | S1 |
| External fire performance | Deemed to satisfy A1 |
| Reaction to fire | Deemed to satisfy A1 |
| Release of dangerous substances | None |
| Use as roofing or external cladding | Yes |
