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Chipseal (also chip seal or chip and seal or spray seal) is a pavement surface treatment that combines one or more layers of asphalt with one or more layers of fine aggregate. In the United States, chipseals are typically used on rural roads carrying lower traffic volumes, and the process is often referred to as asphaltic surface treatment .
Malthoid was once common enough to be used as a generic description of flat roofing material in New Zealand and South Africa (item 26). A description of a New Zealand house built about 1914 says it was, "built of timber framework. covered by sheets of asbestos. The roof was closely timbered, then covered by strips of Malthoid paper.
Shaped like a “U” or channel to catch water (e.g., where the edge of a tile roof meets a wall). Through wall flashing Spans the thickness of the wall and directs water to weep holes. Cap flashing (drip cap) Often used above windows and doors. Drip edge A metal used at the edges of a roof. Step flashing (soaker, base flashing)
Metal roof tiles made of gold, silver, bronze and copper are restricted to religious architecture in South Asia. A notable temple with golden roof tiles is the Nataraja temple of Chidambaram, where the roof of the main shrine in the inner courtyard has been laid with 21,600 golden tiles. [32]
Roof coatings can add 25 years to the service life of a roof and reduce the amount of discarded roofing materials that end up in landfills. The infrared image on the right shows 79 °C (174 °F) on the uncoated (black) section of the modified bitumen roof. The coated (white) section is 26 °C (79 °F).
Its other main uses lie in bituminous waterproofing products, such as roofing felt and roof sealant. [ 6 ] In material sciences and engineering , the terms asphalt and bitumen are often used interchangeably and refer both to natural and manufactured forms of the substance, although there is regional variation as to which term is most common.