A classic interlocking concrete tile with a distinctive Roman profile, boasting a gentle roll and subtle pans. It is available in a wide range of colours, including the new Rustic Red, to blend harmoniously with any environment. Once installed, these tiles create the look of a classic, clay double roman roof with the added advantage of being compatible with a wide range of fittings and accessories. Properties Size: 418mm x 330mm. Minimum pitch: Through coloured. 17.5 at 100mm headlap. 22.5 at 75mm headlap. Granular. 22.5 at 100mm headlap. 30 at 75mm headlap. Maximum pitch: 90 - subject to fixing specification. Maximum headlap: 125mm. Minimum gauge: 293mm. Maximum gauge: 318mm below 22.5. 343mm at 22.5 and over. Tile thickness: 25mm. Coverage: 10.5 tiles/m2 at 318mm gauge. 9.7 tiles/m2 at 343mm gauge. Weight: 4.2 tonnes/1000. Batten size: 38mm x 25mm - rafter centres up to 450mm. 50mm x 25mm - rafter centres up to 600mm. Battens required: 3.15m/m2 at 318mm gauge. 2.92m/m2 at 343mm gauge. Nail size: 60mm x 3.35mm. Tile finish: smooth - through coloured & acrylic coated. Tile profile: profiled. Certification BBA certified. 50 Double Roman Tiles conform to BS EN 490: 2011 Concrete roofing tiles and fittings for roof covering and wall cladding - Product Specifications.