A first quality black Spanish natural slate with a distinctive riven, textured surface, resulting in a stylish finish. Spanish natural slate has a smooth overall finish and a consistent thickness between 4-6mm which gives an even roof slope. Spanish slate samples are continuously tested at the quarry to ensure that it meets BS EN 12326-1 for roofing slate. Due to its high quality and durability, Melano first quality natural slates come with a 100 year guarantee. Spanish Natural Slate Specification Slate Size: 500mm x 375mm Grade: first qualityQuarry: La Bana, Spain Delivery Notes - Our slates are typically delivered on a six-wheeled lorry (11m long & 2.4m wide) with a tail-lift facility to offload on solid, level ground with a pump truck.Non-compliance to delivery restrictions may result in additional delivery charges. Should you specifically require a crane or small vehicle offload, please notify us at the time of placing the order, as an additional charge may be incurred. Please allow 5% extra in the ordered quantity to cover acceptable breakage in transporting natural slate products.