What are the most commonly used insulation in buildings?
&Nbsp; insulation material that is used in a wide variety of architecture, one of the most widely used insulation there are two types: inorganic thermal insulation material of expanded perlite, aerated concrete, rock wool, glass wool, organic insulating material polystyrene, polyurethane foam, etc. Advantages and disadvantages of thermal insulation performance of these materials, mainly by the high and low thermal conductivity of the material (the indicator for thermal conductivity). The thermal conductivity of the material more difficult (that is, less thermal conductivity), its thermal insulation properties as possible. Generally speaking, common features of thermal insulation material is light-weight, loose, porous or fibrous, with its internal flow of air to block the conduction of heat. Inorganic materials are incombustible, temperature wide chemical resistance characteristics of organic material water absorption less, better watertightness and other characteristics. Polystyrene runs touch intumescent and extrusion type two kinds, self-extinguishing after joined flame retardant agent. Expanded polystyrene plates due to the lightweight and convenient use is common; extruded polystyrene high strength, excellent weather resistance, will have greater development. Polyurethane foam according to the different raw materials, is divided into two types: polyether and polyester, made by foaming reaction and the distinction between soft and hard fat. In addition, there is also a foil insulation, used after bonding of aluminum foil and kraft paper, corrugated made of composite plates, made of molded PVC coated aluminium can also be used, multiple sets, as the sandwich wall or roof, light, moisture-proof, heat insulation properties are good.