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Stone slabs require a very heavyweight roof structure, but their weight makes them stormproof. An obsolete roofing material, now used commercially only for building restoration. Collyweston stone slate named after the village of Collyweston; Solar shingle; Metal shakes or shingles. Long life. High cost, suitable for roofs of 3:12 pitch or greater.
Modified bitumen – Polymer modified bitumen membranes were developed in Europe in the mid-1960s and have been in common use throughout the United States since 1975. they are composed of one or more premanufactured sheets consisting of asphalt, reinforcing layers, and in some cases a surfacing is applied. During manufacture, plastics or ...
Replacing the roofing felt on a Scout hall in Wales. Bituminous waterproofing systems are designed to protect residential and commercial buildings.Bitumen (asphalt or coal-tar pitch) is a material made up of organic liquids that are highly sticky, viscous, and waterproof. [1]
Asphalt roll roofing or membrane is a roofing material commonly used for buildings that feature a low sloped roof pitch in North America. The material is based on the same materials used in asphalt shingles ; an organic felt or fiberglass mat, saturated with asphalt , and faced with granular stone aggregate.
Mastic asphalt concrete is generally laid to a thickness of around 20–30 millimetres (13 ⁄ 16 – 1 + 3 ⁄ 16 in) for footpath and road applications and around 10 millimetres (3 ⁄ 8 in) for flooring or roof applications. [19] High-modulus asphalt concrete, sometimes referred to by the French-language acronym EMÉ (enrobé à module élevé)
Slag, a byproduct of iron and steel-making composed primarily of highly impure glass, would normally be a waste product. However, it is in demand as an aggregate in concrete, asphalt paving, and construction fill. In 2014, the industry produced and marketed about 16.0 million mt of slag, worth an estimated $270 million. [16]
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