A roof top is part of your building envelope. It is the covering on the uppermost part of a building or shelter which gives protection from pets and weather, rain or snow notably, but heat also, wind and sunlight. The word also denotes the framing or structure which supports that covering.[1]The characteristics of a roof are centered upon the goal of the building that this addresses, the available roofing materials and the neighborhood traditions of structure and wider principles of architectural design and practice and could also be governed by local or countrywide 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 a garden conservatory protects plants from cold, wind, and rain, but admits light.
Shack made of date palm branches at Neot Semadar, IsraelA rooftop may provide additional living space, for example a roof garden.The elements in the design of a roof covering are:the materialthe constructionthe durabilityThe material of your roof may range between banana leaves, wheaten straw or seagrass to laminated cup, copper (see: copper roof covering), aluminium sheeting and pre-cast cement. In lots of parts of the global world ceramic tiles have been the predominant roof covering materials for centuries, if not millennia. Other roofing materials include asphalt, coal tar pitch, EPDM silicone, Hypalon, polyurethane foam, PVC, slate, Teflon textile, TPO, and real wood shingles and shakes.
The construction of the roof is determined by its method of support and how the underneath space is bridged and whether or not the roof covering is pitched. The pitch is the perspective of which the roof increases from its lowest to highest point. Most US domestic architecture, except in very dried parts, has roofs that are sloped, or pitched. Although modern structure elements such as drainpipes might take away the need for pitch, roofs are pitched for reasons of appearance and traditions. So the pitch is partly dependent after stylistic factors, and partially to do with practicalities.
Some types of roofing, for example thatch, need a steep pitch to become durable and waterproof. Other types of roofing, for example pantiles, are unstable on a steeply pitched roof but provide excellent weather protection at a comparatively low angle. In parts where there is little rain, an almost level roof with a slight run-off provides satisfactory protection against an intermittent downpour. Drainpipes also remove the dependence on a sloping roof structure.
Somebody who specializes in rooftop construction is called a roofer.The durability of the roof top is a subject of concern because the roofing is often the least accessible part of an building for purposes of repair and renewal, while its damage or destruction can have serious effects.
Because the reason for a roof is to safeguard people and their property from climatic elements, the insulating properties of your roof structure are a concern in its structure and the decision of roofing material.Some roof covering materials, particularly those of natural fibrous materials, such as thatch, have excellent insulating properties. For all those that not, extra insulation is often installed under the outside covering. In developed countries, nearly all dwellings have a ceiling installed under the structural members of the roof. The goal of a roof is to insulate against heating and cold, noise, dirt and grime and often from the lice and droppings of birds who frequently choose roofs as nesting places.
Cement tiles can be used as insulation. When installed going out of a space between your tiles and the roof structure surface, it can reduce warming caused by sunlight.Forms of insulation are sensed or cheap sheeting, sometimes with a reflective surface, installed below the tiles or other materials 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 have become popular progressively 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 roofing can suffer from problems including the formation of ice dams throughout the overhanging eaves in winter, causing water from melted snow on top elements of the roof structure to permeate the roofing materials. Ice dams arise when heat escapes through the uppermost part of the roof, and the snow at those factors melts, refreezing as it drips along the shingles, and collecting in the form of ice at the low points. This can bring about structural harm from stress, like the destruction of drainage and gutter systems.
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