Cedral - Rivendale

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Cedral Rivendale slates have a beautifully textured surface with dressed edges, combining the benefit of modern slate technology with the look of a natural slate. Cedral slates are the strongest slates in the market, tough enough to withstand the most volatile weather conditions. Rivendale are available in two different colours: Cromleigh Graphite Blue-Black Size of slate 600mm x 300mm Minimum pitch**: Moderate exposure 22.5° (100mm lap) 20° (110mm lap) Minimum pitch**: Severe exposure 25° (100mm lap) 22.5° (110mm lap) Maximum pitch 90° Typical laps 100, 110mm Slate hooks Hook fixed 100 -150mm Maximum gauge 245 – 250mm Slate thickness 4mm Covering capacity (net) 13.4 slates/m2 at 100mm lap 13.6 slates/m2 at 110mm lap 14.8 slates/m2 at 150mm lap Weight of slating (approx) 20.4 kg/m2 (0.20 kN/m2) at 100mm lap 20.9 kg/m2 (0.20 kN/m2) at 110mm lap 22.8 kg/m² (0.20kN/m2) at 150mm lap Battens required (net) 4.00 lin.m/m2 at 100mm lap 4.08 lin.m/m2 at 110mm lap 4.45 lin.m/m2 at 150mm lap Batten size recommended (fixed to BS 5534) 50 x 25mm for rafters/supports not exceeding 600mm centres Fixings Slate nails (30 x 2.65mm) Copper disc rivets (19mm dia. x 2mm stem) Fitting Screws 14 gauge self sealing Slate hooks*** Length to equal to lap Authority BS EN 492 Show more