A roofing is part of an building envelope. It's the covering on the uppermost part of the building or shelter which provides protection from pets or animals 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 a roof are based mostly upon the goal of the building which it covers, the available roofer materials and the local traditions of building and wider concepts of architectural design and practice and may also be governed by local or national 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 the garden conservatory protects plants from cold, wind, and rain, but admits light.
Shack made of date hand branches at Neot Semadar, IsraelA rooftop may also provide additional liveable space, for example a roof garden.The elements in the design of a roofing are:the materialthe constructionthe durabilityThe material of any roof may range between banana leaves, wheaten straw or seagrass to laminated glass, copper (see: copper roof covering), aluminium sheeting and pre-cast concrete. In lots of parts of the planet ceramic tiles have been the predominant roofer material for centuries, if not millennia. Other roof covering materials include asphalt, coal tar pitch, EPDM silicone, Hypalon, reboundable foam, PVC, slate, Teflon fabric, TPO, and solid wood shingles and shakes.
The construction of a roof depends upon its method of support and how the underneath space is bridged and set up roof covering is pitched. The pitch is the position at which the roof goes up from its least expensive to highest point. Most US local structures, except in very dried up locations, has roofs that are sloped, or pitched. Although modern development elements such as drainpipes might take away the dependence on pitch, roofs are pitched for reasons of traditions and appearance. So the pitch is partly dependent after stylistic factors, also to do with practicalities partially.
Some types of roofer, for example thatch, require a steep pitch to become 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 locations where there is little rainfall, an almost level roof with a slight run-off provides enough protection against an occasional downpour. Drainpipes remove the need for a sloping roof covering also.
A person that specializes in roof structure construction is called a roofer.The durability of the roof structure is a subject of concern because the roof covering is often the least accessible part of an building for purposes of repair and renewal, while its harm or devastation can have serious effects.
Because the purpose of a roof top is to protect people and their belongings from climatic elements, the insulating properties of your roofing are a awareness in its structure and the choice of roofing materials.Some roofing materials, those of natural fibrous material especially, such as thatch, have excellent insulating properties. For those that do not, extra insulation is often installed under the outer covering. In developed countries, the majority of dwellings have a ceiling installed under the structural members of the roof. The purpose of a ceiling is to insulate against warmth and cold, noises, mud 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 departing a space between the tiles and the rooftop surface, it can reduce heating caused by sunlight.Types of insulation are sensed or plastic material sheeting, with a reflective surface sometimes, installed straight below the tiles or other material; 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, 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 roof covering can suffer from problems such as the formation of glaciers dams surrounding the overhanging eaves in cold weather, causing water from melted snow on top elements of the roofing to permeate the roofing materials. Ice dams happen when temperature escapes through the uppermost part of the roof, and the snow at those true factors melts, refreezing as it drips across the shingles, and collecting by means of ice at the lower points. This may lead to structural harm from stress, like the damage of gutter and drainage systems.
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A roofing is part of an building envelope. It's the covering on the uppermost part of the building or shelter which provides protection from pets or animals 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 a roof are based mostly upon the goal of the building which it covers, the available roofer materials and the local traditions of building and wider concepts of architectural design and practice and may also be governed by local or national 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 the garden conservatory protects plants from cold, wind, and rain, but admits light.