A roof top is part of any building envelope. It's the covering on the uppermost part of your building or shelter which gives protection from family pets and weather, notably rain or snow, but also heat, sunlight and wind. The word denotes the framing or structure which helps that covering also.[1]The characteristics of your roof are dependent upon the goal of the building it addresses, the available roofing materials and the local traditions of building 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 your garden conservatory protects plants from cold, wind, and rain, but admits light.
Shack manufactured from date palm branches at Neot Semadar, IsraelA roof may provide additional liveable space, for example a roof top garden.The elements in the design of a roof top are:the materialthe constructionthe durabilityThe material of the roof may range from banana leaves, wheaten seagrass or straw to laminated wine glass, copper (see: copper roof covering), aluminium sheeting and pre-cast cement. In many elements of the global world ceramic tiles have been the predominant roof covering material for centuries, if not millennia. Other roofer materials include asphalt, coal tar pitch, EPDM rubber, Hypalon, reboundable foam, PVC, slate, Teflon textile, TPO, and hardwood shakes and shingles.
The construction of your roof is determined by its method of support and the way the underneath space is bridged and whether or not the roof is pitched. The pitch is the viewpoint at which the roof increases from its most affordable to highest point. Most US domestic structures, except in very dried out areas, has roofs that are sloped, or pitched. Although modern construction elements such as drainpipes may remove the need for pitch, roofs are pitched for reasons of tradition and aesthetics. So the pitch is partly dependent after stylistic factors, and partially to do with practicalities.
Some types of roof, 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 regions where there is little rain, an almost even roof with hook run-off provides satisfactory protection against an intermittent downpour. Drainpipes also remove the dependence on a sloping rooftop.
A person that specializes in roof construction is named a roofer.The durability of a rooftop is a matter of matter because the rooftop is often the least accessible part of an building for purposes of repair and renewal, while its devastation or harm can have serious results.
Because the purpose of a roof is to safeguard people and their belongings from climatic elements, the insulating properties of a roof are a awareness in its structure and the choice of roofing materials.Some roof covering materials, those of natural fibrous material specifically, such as thatch, have excellent insulating properties. For those that do not, extra insulation is often installed under the outside layer. 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 heat and cold, noises, dirt and grime and often from the droppings and lice of birds who frequently choose roofs as nesting places.
Concrete tiles can be used as insulation. When installed giving a space between the tiles and the roof surface, it can reduce heating system caused by the sun.Forms of insulation are thought or clear plastic 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 can be inserted or sprayed into roof cavities. So called Cool roofs have become increasingly popular, and in some instances are mandated by local codes. Cool roofs are thought as roofs with both high reflectivity and high thermal emittance.
Poorly insulated and ventilated roof covering can suffer from problems including the formation of ice dams surrounding the overhanging eaves in cold weather, causing drinking water from melted snow on higher parts of the roof top to permeate the roofing material. Ice dams appear when heat escapes through the uppermost area of the roof, and the snow at those true items melts, refreezing as it drips over the shingles, and collecting by means of ice at the lower points. This may cause structural destruction from stress, like the damage of gutter and drainage systems.
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