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Clapboard, in modern American usage, is a word for long, thin boards used to cover walls and (formerly) roofs of buildings. [1] Historically, it has also been called clawboard and cloboard . [ 2 ] In the United Kingdom , Australia and New Zealand , the term weatherboard is always used.
Along with the roof, it forms the first line of defense against the elements, most importantly sun, rain/snow, heat and cold, thus creating a stable, more comfortable environment on the interior side. The siding material and style also can enhance or detract from the building's beauty.
Sarking is an English word with multiple meanings in roof construction: The use of wood panels, or "sarking boards", called sheathing, sheeting or decking in American English, under the roof-covering materials such as the shingles of a roof to provide support. It is a common term in Scotland, Australia, and New Zealand.
Plank and board are not consistently defined in history. Sometimes these terms are used synonymously. Board means a piece of lumber (timber) 1 ⁄ 2 inch (1.3 cm) to 1.5 inches (3.8 cm) thick and more than 4 inches (10 cm) wide. Plank generally means a piece of lumber (timber) rectangular in shape and thicker than a board.
Bargeboard, 1908 illustration. A bargeboard or rake fascia is a board fastened to each projecting gable of a roof to give it strength and protection, and to conceal the otherwise exposed end grain of the horizontal timbers or purlins of the roof.
A hammer-beam is a form of timber roof truss, allowing a hammerbeam roof to span greater than the length of any individual piece of timber.In place of a normal tie beam spanning the entire width of the roof, short beams – the hammer beams – are supported by curved braces from the wall, and hammer posts or arch-braces are built on top to support the rafters and typically a collar beam.
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This means a roof coating actually becomes the top layer of a composite roof membrane and underlying system. As such, the roof coating is the topmost layer of protection for the membrane, receiving the impact of sunlight (both infrared and ultraviolet (UV)), rain, hail and physical damage. Roof Coatings should not be confused with deck coatings.