Western Red Cedar Shingles & Shakes from Marley are a truly renewable and sustainable roofing and cladding material; with one of the lowest carbon footprints of any widely used building product. They are light to transport yet durable and offer a high degree of thermal ins...Read More
Western Red Cedar Shingles & Shakes from Marley are a truly renewable and sustainable roofing and cladding material; with one of the lowest carbon footprints of any widely used building product. They are light to transport yet durable and offer a high degree of thermal insulation.
Shingles and Shakes have been used for a wide range of structures from simple garden gazebos to domestic dwellings to major theme parks. Shingles and Shakes perform the same functions but are manufactured in different ways. A Shingle is produced by sawing a block of wood on both sides, giving a relatively smooth face and back. A Shake is hand split from a block of cedar along the natural grain of the wood and then resawn to produce one smooth surface.
They can be used for both roofing and cladding. Cedar Shingles can be fixed to pitches as low as 14 degrees.
In some instances, Cedar Shingles may require treatment with a fire retardant. JB FRT Exterior treatment gives the Cedar Shingle an EXT. S. AA B ROOF (t4) fire classification to BS 476-3: 2004 - as good as a clay tile. This treatment also meets BS 476 Euroclass B when used for vertical cladding.
Always check with LABC when using shingles near a boundary, even if there is no building close by. Generally, fire retardant treatments are required when building within 5m of the boundary of the site. However, Building Regulations vary around the UK and advice may need to be taken.
Length: 400mm.
Width: random widths between 75mm and 350mm.
Thickness: 10mm at the butt, tapering.
Profile: sawn both sides, rectangular.
Bundle: approx. 120 pieces.
Colour: natural, varying reddish brown to pale yellow.
Grade: blue label.
Minimum pitch: 14°.
Maximum pitch: 90°.
Minimum side lap: 38mm.
Fixings: silicone bronze nails.
Guarantee: 40 years.
Life expectancy: 40 to 60 years.
Certification: British Standard - BS 1958
Fire resistance: AA t4 to BS 476-3 : 2004.
Grading: exterior grade.
Coverage: Vertical cladding, 90° - 3.47m2 per bundle.
Roofs between 22° and 89° - 2.28m2 per bundle.
Roofs between 14° and 21° - 1.73m2 per bundle.
For maximum life, fixing should be made with 2 no. 31mm x 1.8mm silicon bronze annular ring nails per shingle. As a guide approximately 1kg of nails are required to fix 6 bundles of shingles.
The shingles should be fixed at the appropriate gauge directly onto roofing battens. Use a double course of shingles as a starter course at the eave. The shingles should project at least 38mm beyond the eave protection, or if a gutter is used, at least to the centre line of the gutter. They should extend 38mm over the verge or gable moulding/barge board.
Space the shingles 5mm apart and nail or staple each shingle twice. The nails/staples should be fixed 19mm in from the edge and 38mm above the butt of the course above. Ensure that joints in any one course have a side lap of no less than 38mm from the joint in adjacent courses, and in any 3 courses, that no 2 joints align. Battens should be strong and stiff enough to withstand the proposed loading and provide adequate fixing and alignment.
They must comply with BS 5534: 2014. Marley recommends 25 x 38mm JB-Red factory graded battens. A Marley breathable membrane is also recommended.
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