At verges and side abutments, half tiles must be used in alternate courses. 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 Nail size: 60mm x 3.35mm. Tile finish: smooth - through coloured. 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.