What material is used for roof insulation? What are the common roof insulation materials?

Roof insulation material is a common building material in modern buildings. The characteristic of modern architecture is that the roofs of many buildings are directly flat roofs instead of the traditional arched herringbone roofs. The traditional roof model is a summary of the climate and various needs of the Millennium culture, so it is very important to choose a good roof insulation material for the new roof model building. The following small series will introduce you to the roof insulation materials.

What are the roof insulation materials?

Polyurethane rigid foam

Polyurethane rigid foam is a kind of low-density microcellular foam with closed cell structure, which has low thermal conductivity, good thermal insulation performance, low water absorption and convenient construction and operation. In China, the application of rigid polyurethane foam on roofs is still in the initial stage, mainly through direct spraying. Generally, it is sprayed and foamed on site, which can be used on the roof of any complex structure. Usually, 4-6 people can spray foam 15m3 or more every day, and the spraying area reaches 500m2 every day, which is several times that of traditional materials, calculated by the spraying thickness of 30mm.

Polystyrene board insulation layer

Polystyrene board is a roof board made of cement and broken polystyrene foam. The polystyrene board is located between the fine stone concrete surface layer and the waterproof layer, which not only has the function of thermal insulation, but also has the function of isolation layer to prevent the waterproof layer from cracking when the fine stone concrete surface layer expands with heat and contracts with cold. At present, there is only a gap of 250mm between the overhead precast reinforced concrete slab and the parapet, which cannot prevent the heat from conducting indoors. The dark waterproof layer under the gap will also absorb heat, which will lead to the increase of indoor local temperature. In addition, under the condition of the same thermal insulation effect, polystyrene insulation layer can reduce the cost and save money. Compared with prefabricated reinforced concrete overhead insulation layer, the cost of polystyrene board insulation layer is reduced by about 2.66 yuan /m2, and the cost of roof parapet is reduced by 0.45 yuan /m2( 1/2 brick wall) or 0.65 yuan /m2(3/4 brick wall). Compared with foam concrete insulation layer, the cost of polystyrene board insulation layer can be reduced by 5.66 yuan /m2. However, polystyrene board has low strength, poor fire resistance and poor construction performance.

FS cement fly ash thermal insulation roof

FS thermal insulation material is made of fly ash, sulphoaluminate cement, foam stabilizer and foaming agent by casting and foaming at normal temperature and pressure. Its environmental protection and comprehensive utilization are good. FS thermal insulation material has good thermal insulation performance because of its low density and low thermal conductivity. More importantly, it has a uniform closed-cell structure with low water absorption and natural moisture content. In the construction, it can not only save the process of drenching and wetting, but also avoid the disadvantages caused by moisture absorption of insulation layer after the construction of cement mortar leveling layer is completed. In addition, FS-type thermal insulation roof can reduce the roof thickness, parapet height and the height of pipes and piles protruding from the roof, thus reducing the cost and roof load. It is convenient to carry during construction, which can reduce labor intensity and improve efficiency.

FB new composite roof panel

FB new composite roof board integrates many functions such as light weight, heat preservation, heat insulation and waterproof. Its overall dimensions are1200mm * 700mm *100mm. The wet process of roof insulation, waterproofing and leveling is changed into factory production, which improves the efficiency, and the construction speed of roof engineering can be increased by 2-3 times, which is about 230kg/m2 less than that of traditional roof. FB new composite roof panel adopts light structural plate, thermal insulation board and air layer, and its thermal insulation effect is obviously better than that of traditional roof method. In addition, it adopts the composite waterproof system of rigid waterproof of structural plate itself and flexible waterproof of ts membrane, and the joints between plates are treated with sealing material, sealing and waterproof membrane, which can achieve the waterproof effect of rigid-flexible combination and double insurance.

Above, Bian Xiao introduced four kinds of roof insulation materials to everyone, and also told everyone what characteristics these four kinds of roof insulation materials have, and which one is suitable for use under what circumstances. There are many kinds of heat insulation materials. The four roof insulation materials introduced above are just four common roof insulation materials. There are many other types of roof insulation materials on the market, which can meet everyone's needs in all aspects. As for which kind of roof insulation material is the best, it depends on the specific situation.