This Glendyne SS10U Natural Canadian Ultra Grade Grey Natural Slate is 508mm x 254mm x 4-5mm and it is the perfect natural choice for your roofing needs. Available in a variety of sizes, each slate is selected and produced at high quality deposits in Quebec, Canada. The Glendyne Canadian Grey is a beautiful dark grey natural slate which features subtle shades of blue. Both durable and long lasting, Glendyne Canadian Grey Natural Slate comes with a 75 year guarantee and is unaffected by sunlight, UV rays and acidic rain. As well as this, Glendyne Canadian Grey Natural Slate is free of pyrite or any other metal intrusion, meaning its appearance will not diminish over time due to rust. If laid correctly, Glendyne slate will last the lifetime of the building. It is ideal for use on any significant projects including supermarkets, schools, city offices and prestige homes. Since 2007 Glendyne slate has been approved by the Snowdonia National Park Authority as acceptable for use within the boundaries of the natural park as it is equivalent in colour, texture and weathering characteristics to slates from the Blaenau Ffestiniog area. Features & Benefits 75 year guarantee High quality deposits from Quebec Long lasting & highly durable Unaffected by sunlight, UV and acidic rain Lasts the lifetime of the building Free of pyrite - appearance will not diminish or rust Product Specification Size: 508mm x 254mm x 4-5mm Weight Per Pallet: 1295kg Head Lap: 98mm Weight Per Slate: 1.5kg Slates Per m2: 19.2 Batten Gauge: 205mm Origin: Saint-Marc du Lac Long, Quebec, Canada European Standard: EN 12326-1 British Standard: BS 680 PART 2 SO2 Exposure Test: Complies S1 Thermal Cycle Test: Complies T1 Water Absorption: Complies W1 Contents of Carbonate: Complies <2% 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.