Abacus Construction Index
UK: Mastic Asphalt Roofing: Mastic Asphalt Roofing Suppliers
ABOUT MASTIC ASPHALT ROOFING
Mastic asphalt is a blended bitumen based product, made either from the bitumen produced by distillation of crude oil, or from lake asphalt, a naturally occurring blend of asphalt containing 36% by weight of finely divided clay. The bitumen is blended with limestone powder and fine limestone aggregate to produce mastic asphalt roofing.
The effect of the finely divided clay particles within lake asphalt confers better laying characteristics and enhanced thermal properties. This is particularly beneficial when the mastic asphalt roofing will be exposed to wide temperature variations, as in warm roof construction.
SPONSORED LINKS
Mastic asphalt roofing is normally delivered to site as blocks for melting on site prior to laying. Laid mastic asphalt is brittle when cold, but softens in hot weather. Polymer-modified mastic asphalts, usually containing syrene butadiene styrene block copolymers, are more durable and have greater flexibility and stretch at low temperatures. This allows for greater building movement and better resistance to thermal variation.
Where mastic asphalt roofs are exposed to foot or vehicle access, then paving-grade mastic asphalt should be applied as a wearing layer over the standard roofing grade material.
LEADING UK SUPPLIERS OF MASTIC ASPHALT ROOFING
Other useful links relevant to mastic asphalt roofing:
National
Federation of Roofing Contractors
DETAILED INFORMATION RESOURCES ON MASTIC ASPHALT ROOFING
We recommend the following websites, with building product information including manufacturers' specs, standard specifications, and CAD details: Barbour Compendium at www.barbourcompendium.co.uk, RIBA Product Selector Plus at ww.productselector.co.uk, ASC Bricsnet at www.ascinfo.co.uk, Building Products Index at www.bpindex.co.uk, British Board of Agrément at www.bbacerts.co.uk, British Standards Online at www.bsonline.bsi-global.com.
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Other recommended portals: Archbone, Building Design, Homeone Australia, Lighting Directory, Sapling, Stone Network.
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