Sourced from Quiroga, Northern Spain, the Calidad 80 slate is a great choice for those looking for functionality and a great appearance. The Calidad 80 slates have almost no visible pyrite to give a great finish and ensure stability throughout the slate. With its attractive blue-grey colour and ease of grading, this slate gives a pleasing look and 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 |