ZL roof, roof insulation and construction technology

ZL adhesive powder polystyrene roof insulation technology and ZL plastic powder polystyrene roof insulation technology are respectively developed by Beijing Zhenli Hi-Tech Co., Ltd. and the “ZL Adhesive Polystyrene Particle Heat Insulation Material and Its External Protection Structure Insulation Technical System” For the two technologies of roofing and roof insulation, the former includes flat roof insulation technology and inclined roof insulation technology. It is the extension and development of wall energy-saving technology on roofs and ceilings.
In China, the traditional insulation material used in roofing is slag. Due to the current reduction in resources of this material, polyphenylene plates are commonly used in the roof instead of the roof; despite the low thermal conductivity of polystyrene board, the roof insulation index meets the requirements. However, due to its poor thermal insulation properties, roofs tend to be sun-dried in summer, and the surface temperature of roof tops is high, and residents living on the top floor may feel uncomfortable. Compared with polyphenylene plate materials, the thermal conductivity, specific heat capacity, and material dry density of ZL powder polystyrene heat-insulating pastes are higher than those of polyphenylene plates, and the relative heat storage coefficient is higher than that of polyphenylene plates. Under the conditions of thermal resistance at the top of the layer, the thermal inertia index is much higher than that of the polystyrene board. Therefore, the maximum value of the roofing temperature of the insulating layer made of ZL powder polystyrene insulation paste is lower than that of the polystyrene board material. The roof of the insulation layer can greatly improve the living conditions of the top floor tenants.
In addition to the polystyrene powder granular insulation slurry, another main insulation material adopted by the ZL rubber powder polystyrene roof insulation technology is a solvent-free rigid foam polyurethane. The solvent-free hard foam polyurethane is a polymer thermosetting polymer, and it is an excellent thermal insulation material. Its thermal conductivity is 0.18-0.25W/(m·K), it has excellent waterproof and vapor barrier properties, and the material does not contain water and water. The rate is very low, which can block the penetration of water or water vapor well, maintain a good and stable insulation condition of the roof, and have strong resistance to external forces. It is difficult for other insulation materials to be realized at present.

ZL adhesive polystyrene granules insulation slurry can be applied not only to new flat roofs, but also to some projects that are difficult to use polystyrene boards, such as steep inclined roofs and roofs of existing buildings. Because inclined roofs have better anti-radiation heat than flat roofs, they are used more and more in various buildings. In the inclined roof structure, it is impossible to use slag and other traditional materials for thermal insulation materials, and the use of polystyrene board material is applied. The construction of the waterproof layer and the lining is difficult, and the use of ZL powdered polystyrene particles can effectively solve these problems. . ZL adhesive powder polystyrene heat preservation paste has good wet adhesion, even if used in roofs with large slopes, it can reach the design thickness of heat preservation at one time, and it will not cause slide phenomenon, which solves the problem that slag heat insulation materials can be easily constructed on inclined roofs. The problem of slipping; ZL glue powder polystyrene insulation mortar can be cured after curing, to solve the problem of paving polystyrene board roof after the person can not be.

During construction, after the roof is cleaned, the ZL rubber powder polystyrene roof insulation slurry shall be directly laid. The thickness shall be no less than 50 mm according to the engineering design requirements. The edges shall be compacted and the surface after compaction shall be 2 Check the length of millimeters on the ruler. The error in the direction of the water should not exceed 15 mm. A 50 mm thick polyphenylene plate should be attached to the connecting part of the parapet around the roof. In the parapet wall of the parapet, it is required to use ZL rubber powder polystyrene insulation paste to wipe out, and the slope is not less than 10 cm. When constructing the inclined roof, it is necessary to pay attention to the thickness of each plastering layer of the ZL rubber powder polystyrene heat-insulating slurry and should be controlled within 20 mm. Secondly, attention should be paid to the direction of construction, and the construction should be carried out from the cornice to the roof in order; During the construction of the layer, the double-layer grid cloth is laid on the roof and must be joined in one piece. The pressure roofing grid is not less than 30 mm. If solvent-free rigid foam polyurethane is used as the main insulation material, spraying shall be performed in the direction of the ridge from the cornice to the ridge, and each spraying shall be controlled within 10 mm.
When the existing building roof is energy-saving, other insulation practices require that the waterproof layer be shoveled off, then the insulation layer be made, and finally the waterproof layer be re-paved. The use of ZL rubber powder polystyrene heat-insulating materials, due to the material has a good integrity and adhesive properties, can be supplemented insulation construction without removing the original waterproof layer. ZL adhesive powder polystyrene insulation layer and anti-crack protection layer can form an inverted insulation layer with the original waterproof layer, no need to provide another waterproof layer, greatly reducing the construction procedures, providing a new type of energy saving for the existing building roof Practices and techniques.
Due to the good adhesive force and plasticity of the material, the ZL adhesive powder polystyrene heat-insulating slurry can also be used as the inner insulation of the ceiling. As the top floor ceiling insulation will not be impacted by external forces, it is not necessary to add reinforced glass fiber mesh cloth, and the anti-cracking mortar protective surface can be wiped at the places with waterproof requirements. You can.
As of December 2002, ZL roofing, roof insulation and construction technology have been applied in more than 50 projects in more than a dozen provinces, cities and regions in Beijing, Tianjin, and Shandong. The typical projects include the Great Hall of the People, the Jinan Construction Committee residential building roof, the Fengtai Simple Building, and the Wanliuyuan residential building.