The Redland 49 has defined the roofscapes of London for over half a century, with its unique camber adding both strength and aesthetic appeal. A smaller format offers a light unit weight and a tile that is easy to handle and install. Redland 49 is thus an extremely economical choice of roofing material. Properties Size: 382mm x 226mm. 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: 257mm. Maximum gauge: Through coloured 282mm below 22.5. 307mm at 22.5 and over. Granular 282mm below 30. 307mm at 30 and over. Tile thickness: 25mm. Coverage: 17.8 tiles/m2 at 282mm gauge. 16.3 tiles/m2 at 307mm gauge. Weight: 3.12 tonnes/1000. Batten size: 38mm x 25mm - rafter centres up to 450mm. 50mm x 25mm - rafter centres up to 600mm. Battens required: 3.56m/m2 at 282mm gauge. 3.26m/m2 at 307mm gauge. Nail size: 50mm x 3mm. Tile finish: smooth - through coloured. Tile profile: profiled. Certification BBA certified. Redland 49 Tiles conform to BS EN 490: 2011 Concrete roofing tiles and fittings for roof covering and wall cladding - Product Specifications.