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  • Calidad 99 Roofing Slate

    This very popular Spanish natural roofing slate is sourced from Northern Spain. It is smooth and slightly textured in appearance, creating an aesthetically more pleasing finished roof covering. This roofing slate, which is blue grey 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) Longitudinal 67Mpa
    Transversal 68Mpa
    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


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