Forticrete Hardrow 457mm x 457mm Solo Tile - Dark Grey Please note that deliveries to Scotland for this product will incur additional delivery charges. Dimensions Length: 457mm. Hanging length: 407mm. Width: 457mm. Cover width: 464mm. Thickness: 14mm. Pitch: 20 to 24.5 pitch - 12.3/m2 (102mm min. headlap). 25 pitch & above - 11.5/m2 (75mm min. headlap). Batten size: 38mm x 25mm for spans up to 450mm. 50mm x 25mm for spans from 450mm x 600mm. Fixings For pitches below 40 it is possible to hang the slates, depending on conditions, but advice can be sought from the roofing superstore technical department on 01752 692760. Above 40 all slates should be nailed into the batten with 2 x 38mm x 3.35mm aluminium nails (40mm x 4mm for 24 x 18 slates). The nail hole diameters are approximately 5mm with the nail holes being approximately 50mm down from the heads of the slates and 50 - 100mm in from the side edges. Description Avaliable in 10 colours, brown, dark grey, green, light grey, moss, old stone, orange, red, thatch & yellow. Hardrow SolosTM Roof Slates offer virtually the same architectural properties as natural stone or slate tiles. Our concrete roof slates are extremely durable and mellow with age. They are made with slight dimensional differences and a degree of camber to enhance the product's charm when laid. The tiles combine two subtle blends of colour within the face mix on a through-coloured base. Together with the subtle colour changes within the slate, this recreates a roof appearance far above its price tag. Benefits More cost effective than natural slates. Authentic traditional appearance. Choice of 10 colours to enable matching to existing properties. Very resistant to wind uplift in exposed areas. A high quality product 30 year Durability Guarantee against manufacturing defects. Quality product certified to BSI Kitemark BS EN 490.