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Bituminous shingles, also called "shingles," consist of a fiberglass or cellulose felt reinforcement and a mixture of bitumen and mineral granules. Various shapes are available: rounded, rectangular, and scale-like. These products are easily installed on low-slope roofs and lightweight structures due to their low weight.
A more recent design is the installation of a roof deck with foil-backed foam along with a second deck that is air-gapped away from the foil-backed foam to allow air to flow vertically to a ventilation outlet at the peak of the roof—it is a double-deck design with an air gap. This design improves efficiency. [13]
Flat roofs, or "low-slope" roofs, are also commonly found on commercial buildings throughout the world. The U.S.-based National Roofing Contractors Association defines a low-slope roof as having a slope of 3 in 12 (1:4) or less. [2] Flat roofs exist all over the world, and each area has its own tradition or preference for materials used.
The purlins are the large beams perpendicular to the rafters; from this shot, it appears that there are three purlins on either side of the roof. The sheathing boards are sometimes called the roof deck and are painted white. A purlin (or historically purline, purloyne, purling, perling) is a longitudinal, horizontal, structural member in a roof.
Neo-Mansard, Faux Mansard, False Mansard, Fake Mansard: Common in the 1960s and 70s in the U.S., these roofs often lack the double slope of the Mansard roof and are often steeply sloped walls with a flat roof. Unlike the Second Empire, where upper story windows were contained within dormers, Neo-Mansard roofs have window openings cut through ...
When the homes were just 10 years old, they started showing alarming signs of deterioration — wood popping out under windows, leaky windows, leaky roofs and damage to insulation. Don't miss
A skylight (sometimes called a rooflight) is a light-permitting structure or window, usually made of transparent or translucent glass, [1] that forms all or part of the roof space of a building for daylighting and ventilation purposes.
A level architectural deck may be intended for use by people, e.g., what in the UK is usually called a decked patio. "Roof deck" refers to the flat layer of construction materials to which the weather impervious layers are attached to a form a roof, and they may be either level (for a "flat" rooftop) or sloped.