A roof structure is part of the building envelope. It is the covering on the uppermost part of the building or shelter which gives protection from animals and weather, rain or snow notably, but also heat, wind and sunlight. The term also denotes the framing or structure which supports that covering.[1]The characteristics of a roof are dependent upon the goal of the building that it includes, the available roof materials and the local traditions of structure and wider concepts of architectural design and practice and may 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 an garden conservatory protects plants from cold, wind, and rain, but admits light.
Shack manufactured from date palm branches at Neot Semadar, IsraelA roof top may also provide additional liveable space, for example a roofing garden.The elements in the look of a roof covering are:the materialthe constructionthe durabilityThe material of any roof may range between banana leaves, wheaten straw or seagrass to laminated a glass, copper (see: copper roofing), aluminium sheeting and pre-cast concrete. In lots of elements of the global world ceramic tiles have been the predominant roof covering materials for years and years, if not millennia. Other roof materials include asphalt, coal tar pitch, EPDM silicone, Hypalon, polyurethane foam, PVC, slate, Teflon fabric, TPO, and lumber shakes and shingles.
The construction of a roof is determined by its method of support and the way the underneath space is bridged and whether or not the roof structure is pitched. The pitch is the position at which the roof goes up from its most affordable to highest point. Most US local architecture, except in very dry out locations, has roofs that are sloped, or pitched. Although modern structure elements such as drainpipes might remove the need for pitch, roofs are pitched for reasons of looks and custom. So the pitch is partly dependent upon stylistic factors, and to do with practicalities partly.
Some types of roof covering, for example thatch, require a steep pitch in order to be 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 regions where there is little rainfall, an almost chiseled roof with a slight run-off provides enough protection against an intermittent downpour. Drainpipes take away the need for a sloping roof also.
A person that specializes in roof construction is called a roofer.The durability of your rooftop is a subject of matter because the roof covering is usually the least accessible part of any building for purposes of repair and renewal, while its damage or devastation can have serious results.
Because the reason for a roof covering is to safeguard people and their possessions from climatic elements, the insulating properties of the rooftop are a concern in its framework and the choice of roofing materials.Some roof covering materials, specifically those of natural fibrous material, such as thatch, have excellent insulating properties. For all those that do not, extra insulation is often installed under the exterior covering. 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, sound, mud and frequently from the droppings and lice of parrots who frequently choose roofs as nesting places.
Cement tiles can be used as insulation. When installed going out of a space between the tiles and the roofing surface, it can reduce warming caused by the sun.Types of insulation are plastic material or thought sheeting, with a reflective surface sometimes, installed directly 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 more and more 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 roofing can have problems with problems such as the formation of ice dams around the overhanging eaves in cold weather, causing drinking water from melted snow on upper elements of the roof to penetrate the roofing materials. Ice dams appear when high temperature escapes through the uppermost area of the roof, and the snow at those true points melts, refreezing as it drips over the shingles, and collecting by means of ice at the low points. This may cause structural harm from stress, like the destruction of gutter and drainage systems.
Roofs, Building Roofs, Roof Design amp; Construction, Skylights
File:Kresge Auditorium, MIT roof detail.JPG Wikipedia, the free
Sheet A3 Second Floor and Roof Plans 01102014 3
Steel cover Commercial structure Abruzzo Steel cover Commercial
Thanks a lot for reading and visit our blog, do not forget to share this information.
