A roof top is part of your building envelope. It's the covering on the uppermost part of any building or shelter which gives protection from pets and weather, rain or snow notably, but also heat, sunlight and wind. The word also denotes the framing or structure which supports that covering.[1]The characteristics of your roof are dependent upon the purpose of the building that this protects, the available roofer materials and the neighborhood traditions of engineering and wider concepts of architectural design and practice and could also be governed by local or nationwide legislation. In most countries a roof protects against rain primarily. A verandah may be roofed with material that protects against sunlight but admits the other elements. The roof of any garden conservatory protects plants from cold, wind, and rain, but admits light.
Shack made of date palm branches at Neot Semadar, IsraelA roof top might provide additional liveable space, for example a roof top garden.The elements in the look of a roof top are:the materialthe constructionthe durabilityThe material of the roof may range between banana leaves, wheaten seagrass or straw to laminated a glass, copper (see: copper roofing), aluminium sheeting and pre-cast concrete. In lots of parts of the entire world ceramic tiles have been the predominant roof material for centuries, if not millennia. Other roofing materials include asphalt, coal tar pitch, EPDM plastic, Hypalon, reboundable foam, PVC, slate, Teflon textile, TPO, and hardwood shakes and shingles.
The construction of an roof depends upon its method of support and the way the underneath space is bridged and whether or not the roof is pitched. The pitch is the angle of which the roof goes up from its lowest to highest point. Most US local architecture, except in very dry out areas, has roofs that are sloped, or pitched. Although modern building elements such as drainpipes might take away the dependence on pitch, roofs are pitched for reasons of appearance and custom. So the pitch is dependent upon stylistic factors partly, and to do with practicalities partly.
Some types of roofing, for example thatch, need a steep pitch in order to be durable and waterproof. Other styles of roofing, for example pantiles, are unstable over a steeply pitched roof but provide excellent weather protection at a comparatively low angle. In areas where there is little rainfall, an almost level roof with hook run-off provides satisfactory protection against an occasional downpour. Drainpipes remove the need for a sloping roofing also.
Somebody who specializes in roof top construction is named a roofer.The durability of your roof top 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 destruction or harm can have serious results.
Because the purpose of a roof is to protect people and their property from climatic elements, the insulating properties of a roof top are a concern in its composition and the decision of roofing materials.Some roofing materials, those of natural fibrous materials particularly, such as thatch, have excellent insulating properties. For those that not, extra insulation is often installed under the external part. In developed countries, the majority of dwellings have a ceiling installed under the structural members of the roof. The purpose of a roof is to insulate against temperature and cold, noise, dirt and grime and frequently from the droppings and lice of parrots who frequently choose roofs as nesting places.
Concrete tiles can be used as insulation. When installed departing a space between the tiles and the roof top surface, it can reduce home heating caused by the sun.Types of insulation are plastic material or noticed sheeting, sometimes with a reflective surface, installed immediately below the tiles or other material; synthetic foam batting laid above the ceiling and recycled paper products and other such materials that can be inserted or sprayed into roof cavities. So called Cool roofs have become increasingly popular, and in some cases are mandated by local codes. Cool roofs are defined as roofs with both high reflectivity and high thermal emittance.
Poorly protected and ventilated roofer can have problems with problems including the formation of ice dams round the overhanging eaves in winter, causing normal water from melted snow on top parts of the rooftop to penetrate the roofing materials. Ice dams arise when heat escapes through the uppermost part of the roof, and the snow at those true items melts, refreezing as it drips across the shingles, and collecting in the form of ice at the low points. This may lead to structural damage from stress, like the damage of gutter and drainage systems.
roof shapes click on the roof shapes to display their trussed rafter
Roof Framing Geometry: Rafter Tools+ for iPhone Hip Rafter Layout
Carpenters build conventional rafter roof frames onsite. The rafters
Draw the Hip Rafter Plumb Line @ the End of Hip Rafter Level Line
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