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Shingles are laid in courses, usually with each shingle offset from its neighbors. The first course is the starter course and the last being a ridge course or ridge slates for a slate roof. The ridge is often covered with a ridge cap, board, piece, or roll, [2] sometimes with a special ridge vent material.
In 2007, GAF merged with Elk Corporation, a manufacturer of asphalt felts and coatings. [11] In 2011, GAF became the first roofing manufacturer to offer a Lifetime Limited Warranty on all laminated shingles. [5] [6] GAF Energy, a sister company which offers affordable integrated rooftop solar options, was launched in 2019. [12]
A ridge vent is a type of vent installed at the peak of a sloped roof which allows warm, humid air to escape a building's attic. Ridge vents are most common on shingled residential buildings. Ridge vents are also used in industrial warehouses to help release the hot air and help circulate comfortable air inside the building .
Asphalt shingles on a home in Avalon, New Jersey. Two types of base materials are used to make asphalt shingles, organic and fiberglass.Both are made in a similar manner, with an asphalt-saturated base covered on one or both sides with asphalt or modified-asphalt, the exposed surface impregnated with slate, schist, quartz, vitrified brick, stone, [6] or ceramic granules, and the under-side ...
In the United States, the International Building Code and ASTM International define Exterior Insulation and Finish System (EIFS) as a non-load-bearing exterior wall cladding system that consists of an insulation board attached either adhesively, mechanically, or both, to the substrate; an integrally reinforced base coat; and a textured protective finish coat.
Shingle fabrication was revolutionized in the early 19th century by steam-powered sawmills. Shingle mills made possible the production of uniform shingles in mass quantities. The sawn shingle of uniform taper and smooth surface eliminated the need to hand dress. The supply of wooden shingles was, therefore, no longer limited by local factors.
At the age of 21, Henry Ward Johns had already patented roofing and insulation products. In 1858, he founded the H.W. Johns Manufacturing Company in New York City . [ 3 ] [ 4 ] In 1885, the Manville Covering Company was established in Wisconsin by Charles B. Manville, whose grandson was the much-married socialite Tommy Manville .
When laying a radiant barrier over the insulation on the attic floor, it is possible for dust to accumulate on the top side. Many factors like dust particle size, dust composition and the amount of ventilation in the attic affect how dust accumulates and thus the ultimate performance of a radiant barrier in an attic.