How To Install Solar Span Roofing' title='How To Install Solar Span Roofing' />Roof Wikipedia.A roof is part of a building envelope.It is the covering on the uppermost part of a building or shelter which provides protection from animals and weather, notably rain or snow, but also heat, wind and sunlight.The word also denotes the framing or structure which supports that covering.The characteristics of a roof are dependent upon the purpose of the building that it covers, the available roofing materials and the local traditions of construction and wider concepts of architectural design and practice and may also be governed by local or national legislation.In most countries a roof protects primarily against rain.A verandah may be roofed with material that protects against sunlight but admits the other elements.The roof of a garden conservatory protects plants from cold, wind, and rain, but admits light.A roof may also provide additional living space, for example a roof garden.Etymology. Old English hrof roof, ceiling, top, summit heaven, sky, also figuratively, highest point of something, from Proto Germanic khrofam cf.Dutch roef deckhouse, cabin, coffin lid, Middle High German rof penthouse, Old Norse hrof boat shed.There are no apparent connections outside the Germanic family.English alone has retained the word in a general sense, for which the other languages use forms corresponding to OE.OED. Design elements.The elements in the design of a roof are The material of a roof may range from banana leaves, wheaten straw or seagrass to laminated glass, coppersee copper roofing, aluminium sheeting and pre cast concrete.In many parts of the world ceramictiles have been the predominant roofing material for centuries, if not millennia.Learn more about Bare Skin, Second Skin and Vintage Skin Sustainable Panels, Gutters and Snow Dogs.The Price of an Average Roof.Tesla CEO and product architect Elon Musk claims that Tesla roof will be comparable in cost, over its lifetime, to other common roofing.Get buying tips for choosing the right roofing material for the style of your home on HGTV.Other roofing materials include asphalt, coal tar pitch, EPDM rubber, Hypalon, polyurethane foam, PVC, slate, Teflon fabric, TPO, and wood shakes and shingles.The construction of a roof is determined by its method of support and how the underneath space is bridged and whether or not the roof is pitched.The pitch is the angle at which the roof rises from its lowest to highest point.Most US domestic architecture, except in very dry regions, has roofs that are sloped, or pitched.Although modern construction elements such as drainpipes may remove the need for pitch, roofs are pitched for reasons of tradition and aesthetics.So the pitch is partly dependent upon stylistic factors, and partially to do with practicalities.How To Install Solar Span Roofing' title='How To Install Solar Span Roofing' />Some types of roofing, for example thatch, require a steep pitch in order to be waterproof and durable.Other types of roofing, for example pantiles, are unstable on a steeply pitched roof but provide excellent weather protection at a relatively low angle.In regions where there is little rain, an almost flat roof with a slight run off provides adequate protection against an occasional downpour.Drainpipes also remove the need for a sloping roof.A person that specializes in roof construction is called a roofer.The durability of a roof is a matter of concern because the roof is often the least accessible part of a building for purposes of repair and renewal, while its damage or destruction can have serious effects.Form. Terminology of some roof parts.The shape of roofs differs greatly from region to region.The main factors which influence the shape of roofs are the climate and the materials available for roof structure and the outer covering.The basic shapes of roofs are flat, mono pitched, gabled, hipped, butterfly, arched and domed.There are many variations on these types.Roofs constructed of flat sections that are sloped are referred to as pitched roofs generally if the angle exceeds 1.Pitched roofs, including gabled, hipped and skillion roofs, make up the greatest number of domestic roofs.Some roofs follow organic shapes, either by architectural design or because a flexible material such as thatch has been used in the construction.Parts. Star roof lifted into the ESO Supernova Planetarium Visitor Center.There are two parts to a roof, its supporting structure and its outer skin, or uppermost weatherproof layer.In a minority of buildings, the outer layer is also a self supporting structure.The roof structure is generally supported upon walls, although some building styles, for example, geodesic and A frame, blur the distinction between wall and roof.Support. The roof of a library in Sweden.The supporting structure of a roof usually comprises beams that are long and of strong, fairly rigid material such as timber, and since the mid 1.In countries that use bamboo extensively, the flexibility of the material causes a distinctive curving line to the roof, characteristic of Oriental architecture.Timber lends itself to a great variety of roof shapes. Sony Vegas Pro 12 0 Build 486 X64 on this page. The timber structure can fulfil an aesthetic as well as practical function, when left exposed to view.Stone lintels have been used to support roofs since prehistoric times, but cannot bridge large distances.The stone arch came into extensive use in the ancient Roman period and in variant forms could be used to span spaces up to 1.The stone arch or vault, with or without ribs, dominated the roof structures of major architectural works for about 2,0.Industrial Revolution and the designing of such buildings as Paxtons Crystal Palace, completed 1.With continual improvements in steel girders, these became the major structural support for large roofs, and eventually for ordinary houses as well.Another form of girder is the reinforced concrete beam, in which metal rods are encased in concrete, giving it greater strength under tension.Outer layer. This part of the roof shows great variation dependent upon availability of material.In vernacular architecture, roofing material is often vegetation, such as thatches, the most durable being sea grass with a life of perhaps 4.In many Asian countries bamboo is used both for the supporting structure and the outer layer where split bamboo stems are laid turned alternately and overlapped.In areas with an abundance of timber, wooden shingles and boards are used, while in some countries the bark of certain trees can be peeled off in thick, heavy sheets and used for roofing.The 2. 0th century saw the manufacture of composition asphalt shingles which can last from a thin 2.When a layer of shingles wears out, they are usually stripped, along with the underlay and roofing nails, allowing a new layer to be installed.An alternative method is to install another layer directly over the worn layer.While this method is faster, it does not allow the roof sheathing to be inspected and water damage, often associated with worn shingles, to be repaired.Having multiple layers of old shingles under a new layer causes roofing nails to be located further from the sheathing, weakening their hold.The greatest concern with this method is that the weight of the extra material could exceed the dead load capacity of the roof structure and cause collapse.Because of this, jurisdictions which use the International Building Code prohibit the installation of new roofing on top of an existing roof that has two or more applications of any type of roof covering the existing roofing material must be removed before installing a new roof.Slate is an ideal, and durable material, while in the Swiss Alps roofs are made from huge slabs of stone, several inches thick.The slate roof is often considered the best type of roofing.A slate roof may last 7.However, slate roofs are often expensive to install in the USA, for example, a slate roof may have the same cost as the rest of the house.Often, the first part of a slate roof to fail is the fixing nails they corrode, allowing the slates to slip.In the UK, this condition is known as nail sickness.Because of this problem, fixing nails made of stainless steel or copper are recommended, and even these must be protected from the weather.Asbestos, usually in bonded corrugated panels, has been used widely in the 2.Health and legal issues involved in the mining and handling of asbestos products means that it is no longer used as a new roofing material.However, many asbestos roofs continue to exist, particularly in South America and Asia.Roofs made of cut turf modern ones known as green roofs, traditional ones as sod roofs have good insulating properties and are increasingly encouraged as a way of greening the Earth.Past Participants Solar Power International.
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