ETERNIT CLAY SHINGLES: Technical Information

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TILED VALLEY DETAIL

Valleys may be formed using purpose made Hawkins Valley Tiles. Course with adjacent tiling where roofs intersect at 90° on plan, and are of equal pitch of 30°, 40°, 45° or 50°. Valley tiles are laid on battens with underlay, without nailing or bedding. Supporting boarding should be fixed between rafters. Valley Tiles should not be cut, but if necessary to maintain perpendicular bond, straight cutting to plain tiles should be accommodated within the first four tiles either side.

BONNET HIP DETAIL

Hawkins Bonnet Hip tiles are available for tiles where roof slopes adjacent to the hip intersect at 90° on plan and are of equal pitch, of 30°, 40°, 45° or 50°. Bonnet Hip Tiles should be laid to course and bond with the tiling on each side of the hip. Hips should receive a minimum of cutting to the rake of the adjacent plain tile. In order to maintain perpendicular bond, straight cutting to plain tiles should be accommodated within the first four tiles either side.

Bonnet Hip Tiles are nailed to a batten fixed to the hip tree with a 70 mm x 2.65 mm aluminium nail, bedded and struck pointed in cement mortar, undercut and kept back from the front edge of the hip tile. Tile slips maybe used under the eaves bonnet to reduce the bedding mortar.

VERTICAL TILE HANGING DETAIL

Hawkins Plain Tiles and Ornamental Tiles can be applied to both timber framed and masonry construction. Normal timber battens can be fixed to the groundwork using appropriate fixings at a maximum 115 mm gauge to provide a minimum 35 mm lap for the tiles.

Purpose made Hawkins 90° External Angle Tiles should be used at corners. Left and right hand tiles are available to provide a bond with the main tiling.

Where the tiling meets an abutment, gable (tile-and-a-half) tiles should be used in alternate courses to provide broken bond. A stepped lead flashing should be taken behind the tiles and turned in a single welt on a vertical counter-batten to provide necessary weathering.

All tiles laid vertically (70° and above) should be twice nailed using 38 mm x 2.65 mm aluminium nails.

RIDGE/VERGE DETAIL

Ridges may be formed with an extensive range of Hawkins Clay ridge tile profiles designed to suit pitches between 35° and 60°. To maintain the cover at the course of the tiles immediately below the ridge an Eaves/Tops Tile is nailed to a batten turned on edge. The ridge tiles should be edge bedded onto the tops course tiles with solid bedding at butt joints, using small pieces of tile to support the mortar.

Verges are finished with tiles and gables (tile-and-a-half tiles) laid in alternate courses to break bond/joints and are both twice nailed. Tiles may be laid mortar bedded over an undercloak of fibre-cement, or on plain tiles laid face down with the nail hole end under the batten ends.

For further information contact us by email or telephone on (02) 9666 1592.

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