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Venta 50 is a thin, flat slate from Northern Spain.
Data Sheet
| Water absorption | W1 |
| Non carbonate carbon content | In accordance 0.6% |
| Mechanical resistance characteristics (MoR) | Transversal 56.5N/mm2 Longitudinal 50.9N/mm2 |
| Calcium carbonate content | Complies <0.4% |
| 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 |
