A roof is part of an building envelope. It's the covering on the uppermost part of a building or shelter which gives protection from pets and weather, notably rain or snow, but heat also, sunlight and wind. The term also denotes the framing or structure which supports that covering.[1]The characteristics of your roof are dependent upon the purpose of the building which it addresses, the available roof materials and the local traditions of engineering and wider ideas of architectural design and practice and could also be governed by local or national legislation. In most countries a roof protects generally against rain. A verandah might be roofed with material that protects against sun light but admits the other elements. The roof of the garden conservatory protects plants from cold, wind, and rain, but admits light.
Shack made of date palm branches at Neot Semadar, IsraelA roof structure could also provide additional living space, for example a roofing garden.The elements in the design of a roof structure are:the materialthe constructionthe durabilityThe material of the roof may range from banana leaves, wheaten straw or seagrass to laminated glass, copper (see: copper roof), aluminium sheeting and pre-cast cement. In many parts of the entire world ceramic tiles have been the predominant roofer materials for centuries, if not millennia. Other roofer materials include asphalt, coal tar pitch, EPDM silicone, Hypalon, polyurethane foam, PVC, slate, Teflon fabric, TPO, and wood shingles and shakes.
The construction of a roof depends upon its approach to support and how the underneath space is bridged and set up roof is pitched. The pitch is the viewpoint of which the roof rises from its most affordable to highest point. Most US domestic architecture, except in very dried out areas, has roofs that are sloped, or pitched. Although modern development elements such as drainpipes might take away the need for pitch, roofs are pitched for reasons of custom and aesthetics. So the pitch is partly dependent upon stylistic factors, and partially to do with practicalities.
Some types of roofer, for example thatch, require a steep pitch in order to be durable and waterproof. Other types of roofing, for example pantiles, are unstable over a steeply pitched roof but provide excellent weather protection at a comparatively low angle. In regions where there is little rainwater, an almost even roof with hook run-off provides adequate protection against an intermittent downpour. Drainpipes remove the need for a sloping roofing also.
Somebody who specializes in roof construction is named a roofer.The durability of an roofing is a subject of matter because the roof is often the least accessible part of any building for purposes of repair and renewal, while its damage or damage can have serious effects.
Because the purpose of a roof structure is to protect people and their property from climatic elements, the insulating properties of your roof structure are a thought in its framework and the choice of roofing materials.Some roof covering materials, those of natural fibrous material especially, such as thatch, have excellent insulating properties. For all those that do not, extra insulation is often installed under the outside coating. In developed countries, the majority of dwellings have a ceiling installed under the structural members of the roof. The goal of a ceiling is to insulate against high temperature and cold, sound, dirt and grime and often from the lice and droppings of parrots who frequently choose roofs as nesting places.
Concrete tiles can be used as insulation. When installed departing a space between your tiles and the roofing surface, it can reduce home heating caused by the sun.Forms of insulation are believed or plastic material sheeting, sometimes with a reflective surface, installed below the tiles or other material immediately; synthetic foam batting laid above the ceiling and recycled paper products and other such materials that may be inserted or sprayed into roof cavities. So called Cool roofs have become popular ever more, and in some full cases are mandated by local codes. Cool roofs are defined as roofs with both high reflectivity and high thermal emittance.
Poorly protected and ventilated roof covering can have problems with problems like the formation of snow dams about the overhanging eaves in cold weather, causing normal water from melted snow on higher elements of the roof top to permeate the roofing material. Ice dams arise when high temperature escapes through the uppermost area of the roof, and the snow at those true tips melts, refreezing as it drips across the shingles, and collecting in the form of ice at the lower points. This can result in structural destruction from stress, including the devastation of gutter and drainage systems.
Gable Roof Framing Technique
Roof Rafters
monopitch roofs coupled roofs close coupled roof s trussed rafter
Roof Rafters
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