Domiz slates are a natural Spanish slate from the Cabrera mountains that are hand split to achieve the strongest and best-looking product. First-grade, the gorgeous blue-grey colour and the cold, hard lines of the Domiz slate are very similar to that of Welsh slate from the Ffestiniogg quarry which is now defunct. Specifiers and architects are using Domiz slate in place of the unavailable Welsh slate. Domiz Spanish slate won’t fade in colour and as such can be installed in the harshest environments and climates. Slates are tested rigorously to not only the BS EN 12326 UK standard but also the NF 228 French standard, known for having the strictest criteria in the world. Domiz standard-grade slates achieve A1-T1-S1 to BS EN 12326 and they have a 75-year guarantee from supplier SSQ. Since their lifespan is expected to last longer than 75 years, Domiz Spanish slate can be considered more sustainable as it can last twice as long as other roofing tiles. Domiz slates are between 5-7mm thick with a rust-free guarantee that offers property owners an attractive and low-maintenance roof that will continue to look stunning for many years. Use Domiz Spanish slate to give an authentic and sleek finish. Domiz Slate Specifications Dimensions: 600mm x 300mmThickness: 5-7mm Minimum pitch: 20 degrees.Coverage: approximately 13.1 slates per m2 at 90mm headlap. 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.