A dark thin slate with a slightly textured appearance. With some visible pyrites, this tile is a very cost-effective solution for customers looking for natural slates to complete their project. Spanish natural slate has a smooth overall finish and a consistent thickness between 4-6mm which gives an even roof slope. Spanish natural slate samples are continuously tested at the quarry to ensure that it meets BS EN 12326-1 for roofing slate. Acceptable levels of carbon content and a slightly textured surface combine to make Spanish Liarn natural slates a popular cost-effective option. Due to its high quality and durability, Liarn first quality natural slates come with a 100 year guarantee. Spanish Natural Slate Specification Slate Size: 500mm x 375mmQuarry: Cufica, SpainGuarantee: 100 years 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