A roof top is part of a building envelope. It's the covering on the uppermost part of the building or shelter which gives protection from pets and weather, notably rain or snow, but also heat, wind and sunlight. The term also denotes the framing or structure which supports that covering.[1]The characteristics of a roof are based mostly upon the goal of the building that this includes, the available roof materials and the neighborhood traditions of building and wider ideas of architectural design and practice and may also be governed by local or countrywide legislation. In most countries a roof protects against rain primarily. A verandah might be roofed with material that protects against sunlight 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 hand branches at Neot Semadar, IsraelA roof structure could also provide additional living space, for example a rooftop garden.The elements in the look of a roof are:the materialthe constructionthe durabilityThe material of any roof may range from banana leaves, wheaten straw or seagrass to laminated wine glass, copper (see: copper roof), aluminium sheeting and pre-cast cement. In lots of elements of the global world ceramic tiles have been the predominant roof material for years and years, if not millennia. Other roofing materials include asphalt, coal tar pitch, EPDM rubber, Hypalon, reboundable foam, PVC, slate, Teflon cloth, TPO, and solid wood shingles and shakes.
The construction of a roof is determined by its approach to support and the way the underneath space is bridged and whether or not the roof is pitched. The pitch is the position of which the roof rises from its minimum to highest point. Most US home architecture, except in very dry out locations, has roofs that are sloped, or pitched. Although modern engineering elements such as drainpipes might remove the dependence on pitch, roofs are pitched for reasons of looks and traditions. So the pitch is partly dependent upon stylistic factors, also to do with practicalities partially.
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 relatively low angle. In parts where there is little rainwater, an almost flat roof with a slight run-off provides sufficient protection against an occasional downpour. Drainpipes also remove the dependence on a sloping roof top.
Somebody who specializes in roof structure construction is called a roofer.The durability of your roofing is a matter of matter because the roof top is often the least accessible part of any building for purposes of repair and renewal, while its harm or damage can have serious results.
Because the reason for a roof structure is to safeguard people and their possessions from climatic elements, the insulating properties of a roof top are a factor in its framework and the choice of roofing material.Some roofer materials, specifically those of natural fibrous material, such as thatch, have excellent insulating properties. For those that not, extra insulation is installed under the exterior level often. In developed countries, nearly all dwellings have a ceiling installed under the structural members of the roof. The purpose of a ceiling is to insulate against high temperature and cold, noises, dirt and grime and frequently from the droppings and lice of wild birds who frequently choose roofs as nesting places.
Concrete tiles can be used as insulation. When installed going out of a space between the tiles and the rooftop surface, it can reduce home heating caused by sunlight.Types of insulation are sensed or clear plastic sheeting, sometimes with a reflective surface, installed below the tiles or other material directly; 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 are becoming popular progressively more, and occasionally are mandated by local codes. Cool roofs are thought as roofs with both high reflectivity and high thermal emittance.
Poorly covered and ventilated roofing can have problems with problems such as the formation of glaciers dams surrounding the overhanging eaves in winter, causing water from melted snow on upper elements of the roof to penetrate the roofing materials. Ice dams take place when high temperature escapes through the uppermost part of the roof, and the snow at those factors melts, refreezing as it drips across the shingles, and collecting in the form of ice at the lower points. This can cause structural damage from stress, like the destruction of gutter and drainage systems.
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GAMBREL ROOFS
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