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This very popular Spanish natural roofing slate is sourced from Northern Spain. It is smooth and slightly textured in appearance, with visible pyrite. This roofing slate, which is blue/black in colour is easy to grade and place on the roof and is sourced directly from the slate quarry.
This roofing slate complies with all relevant British and European standard BS EN 12326 and the test results show that this slate is A1, T1 and S1.
Data Sheet
| Water absorption | W1 |
| Non carbonate carbon content | In accordance <1% |
| Mechanical resistance characteristics (MoR) | Transversal 41 (Mpa) Longitudinal 57 (Mpa) |
| 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 |
