This paper analyzes the causes of insulation shedding of building exterior wall, mainly from three aspects of material, design and construction control, in order to reduce the hidden danger of insulation system shedding quality.
1, do the selection and control of insulation materials.
Control the quality of polymer mortar, insulation board and anchor bolt in building external wall insulation system. Adhesives should be scientifically proportioned to ensure polymer content and supporting additives; insulation board quality should be qualified, for rock wool, XPS board, PU board should be strengthened, such as rock wool board should be strengthened anchor bolt fixation, XPS board should be brushed interface agent to improve adhesion and so on. When choosing anchor bolts, the type and depth of anchor bolts should be selected according to the type of base wall, so as to ensure that the anchor force requirements are met and prevent the anchor force from failing to achieve the anchorage effect.
2, the design of wall insulation system is reasonable.
The wall insulation project is a systematic project, the matching of each structural layer should be considered in the design, the anchor bolt should be designed to reinforce the materials with low strength or poor cohesion, and the bonding rate of the insulation board should be improved; the external decoration should be matched with the insulation system, and the coating system with good permeability should be designed to design the face brick. Flexible tiles should be used and the seams should be designed rationally.
3. Strengthen construction control.
Construction is a weak link in the quality control of building wall insulation project. Before construction, it is necessary to do a good job of checking and acceptance of the base wall, to ensure that the tensile bond strength of the base meets the requirements of the code, the smoothness of the wall is within the controllable range, and there is no such phenomena as hollowing, powdering, oil pollution that affect the sticking. Process control, ensure the coating rate of bonded mortar, avoid the improper practices such as falsely pasting insulation board, falsely beating anchor bolts, dry hanging net; insulation system before and after construction, should pay attention to weather changes and product protection, to avoid the mortar before solidification, rain wash or sunlight exposure.
Above is about the introduction of exterior wall insulation layer fall off, you have any questions or questions, you can come to the company to consult, thank you for our company's attention, we look forward to your arrival!