A rooftop is part of your building envelope. It is the covering on the uppermost part of the building or shelter which gives protection from pets or animals and weather, rain or snow notably, but heat also, wind and sunlight. The word denotes the framing or composition which supports that covering also.[1]The characteristics of a roof are dependent upon the goal of the building which it includes, the available roofing materials and the neighborhood traditions of structure and wider concepts of architectural design and practice and could also be governed by local or nationwide legislation. In most countries a roof protects primarily against rain. A verandah might be roofed with materials that shields against sun rays but admits the other elements. The roof of an garden conservatory protects plants from cold, wind, and rain, but admits light.
Shack made of date hand branches at Neot Semadar, IsraelA roof top could also provide additional living space, for example a roof garden.The elements in the look of a roof covering are:the materialthe constructionthe durabilityThe material of the roof may range from banana leaves, wheaten straw or seagrass to laminated wine glass, copper (see: copper roof), aluminium sheeting and pre-cast concrete. In lots of parts of the global world ceramic tiles have been the predominant roofer material for years and years, if not millennia. Other roof materials include asphalt, coal tar pitch, EPDM silicone, Hypalon, polyurethane foam, PVC, slate, Teflon textile, TPO, and timber shingles and shakes.
The construction of an roof depends upon its approach to support and the way the underneath space is bridged and whether or not the roofing is pitched. The pitch is the position of which the roof increases from its least expensive to highest point. Most US home architecture, except in very dried parts, has roofs that are sloped, or pitched. Although modern engineering elements such as drainpipes might take away the dependence on pitch, roofs are pitched for reasons of custom and looks. So the pitch is dependent after stylistic factors partly, and partially regarding practicalities.
Some types of roof, for example thatch, need a steep pitch to become waterproof and durable. 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 regions where there is little rain, an almost toned roof with a slight run-off provides enough protection against an occasional downpour. Drainpipes take away the dependence on a sloping roof structure also.
Somebody who specializes in roof covering construction is called a roofer.The durability of any roof covering is a matter of concern because the roof structure is often the least accessible part of your building for purposes of repair and renewal, while its devastation or damage can have serious results.
Because the purpose of a roof top is to protect people and their possessions from climatic elements, the insulating properties of an rooftop are a consideration in its framework and the decision of roofing materials.Some roof covering materials, those of natural fibrous material particularly, such as thatch, have excellent insulating properties. For those that not, extra insulation is installed under the external covering often. 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 high temperature and cold, noises, dirt and often 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 your tiles and the rooftop surface, it can reduce heating caused by the sun.Types of insulation are felt or clear plastic sheeting, with a reflective surface sometimes, installed immediately below the tiles or other materials; 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 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 covered and ventilated roof can have problems with problems such as the formation of snow dams across the overhanging eaves in cold weather, causing water from melted snow on top parts of the roof to penetrate the roofing materials. Ice dams arise when warmth escapes through the uppermost area of the roof, and the snow at those true details melts, refreezing as it drips across the shingles, and collecting in the form of ice at the lower points. This can result in structural damage from stress, including the destruction of gutter and drainage systems.
deLeon of Groundwork Design http://groundworkdesign.com liveroof
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