A roof structure is part of your building envelope. It is the covering on the uppermost part of a building or shelter which provides protection from pets or animals and weather, rain or snow notably, but heat also, wind and sunlight. The word denotes the framing or structure which supports that covering also.[1]The characteristics of a roof are centered upon the goal of the building which 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 national legislation. In most countries a roof protects generally against rain. A verandah may be roofed with material that protects against sunlight but admits the other elements. The roof of any garden conservatory protects plants from cold, wind, and rain, but admits light.Shack made of date palm branches at Neot Semadar, IsraelA roof covering could also provide additional liveable space, for example a roofing garden.The elements in the design of a roof covering are:the materialthe constructionthe durabilityThe material of any roof may range from banana leaves, wheaten seagrass or straw to laminated a glass, copper (see: copper roofer), aluminium sheeting and pre-cast cement. In lots of elements of the global world ceramic tiles have been the predominant roofer materials for years and years, if not millennia. Other roof covering materials include asphalt, coal tar pitch, EPDM silicone, Hypalon, polyurethane foam, PVC, slate, Teflon fabric, TPO, and wood shakes and shingles.The construction of the roof depends upon its method of support and the way the underneath space is bridged and set up roof top is pitched. The pitch is the angle at which the roof goes up from its minimum to highest point. Most US domestic architecture, except in very dried out locations, has roofs that are sloped, or pitched. Although modern development elements such as drainpipes might remove the dependence on pitch, roofs are pitched for reasons of traditions and aesthetics. So the pitch is dependent upon stylistic factors partly, and partially to do with practicalities.Some types of roofing, for example thatch, need a steep pitch to become waterproof and durable. Other styles of roofing, for example pantiles, are unstable over a steeply pitched roof but provide excellent weather protection at a comparatively low angle. In areas where there is little rainwater, an almost level roof with hook run-off provides enough protection against an intermittent downpour. Drainpipes remove the dependence on a sloping roof top also.Somebody who specializes in roof structure construction is named a roofer.The durability of an roofing is a matter of matter because the roof is often the least accessible part of an building for purposes of repair and renewal, while its destruction or destruction can have serious results.Because the reason for a roof covering is to safeguard people and their property from climatic elements, the insulating properties of any roof are a thought in its structure and the choice of roofing material.Some roof covering materials, especially those of natural fibrous materials, such as thatch, have excellent insulating properties. For all those that not, extra insulation is installed under the external part often. In developed countries, nearly all dwellings have a ceiling installed under the structural members of the roof. The purpose of a ceiling is to insulate against warmth and cold, sound, dirt and often from the droppings and lice of parrots who frequently choose roofs as nesting places.Cement tiles can be used as insulation. When installed leaving a space between your tiles and the roofing surface, it can reduce heating caused by the sun.Types of insulation are believed or cheap sheeting, sometimes with a reflective surface, installed straight 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 are becoming popular progressively more, 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 roofing can suffer from problems like the formation of glaciers dams around the overhanging eaves in winter, causing normal water from melted snow on higher elements of the roof top to permeate the roofing materials. Ice dams appear when heating escapes through the uppermost part of the roof, and the snow at those tips melts, refreezing as it drips along the shingles, and collecting by means of ice at the lower points. This may lead to structural destruction from stress, including the damage of drainage and gutter systems. Thanks for reading and visit our blog, don't forget to share this article.