Building exterior wall coating flake peeling, because you didn't do it

Exterior wall coating because of its simple structure, rich colors, high construction efficiency, low cost, easy to maintain and update is widely used as exterior wall facing. However, if no good understanding to the performance of coating used, processes improper, will appear at the grass-roots level clear off color, color, or bad, it can also cause ballooning and peeling coating, affect the appearance of the building, also may be a series of quality problems caused by leakage of exterior wall. Coating quality is the key to finish quality. Should be paid attention to the choice of exterior wall coating paint all aspects of the technical indicators, had better choose good elasticity, crack resistance, waterproof breathable material. From the base material to finish, want to appropriate collocation, choose good permeability, good waterproof function primer. Use paint manufacturers supporting special putty putty or polymer modified cement. Do not mix of ordinary low intensity interior wall putty. Enter the scene, should accept all materials. Material must conform to the requirements of the design and construction, and product performance test report and product certificate. Performance must conform to the existing national standards and requirements, and according to the relevant provisions of the spot check and review. Establish a system of checking the material approach, effective control of material quality. The strength of the base construction quality is the key to grass-roots, smoothness and cleanliness. Plaster base should be after curing period, the general should guarantee 2 weeks at room temperature, curing time, the basic unit should be dry, the moisture content should be less than 8%. Based on strong enough. Should not have burnish, defects such as cracking and loose. If the surface is loose, grinding and pulverization, should use wire brush to clean. Basal flatness should be strictly controlled, so that the surface can be evenly spread out. If there are holes and uneven parts, should be embedded with elastic putty. Add the right amount of fiber in cement mortar can have the effect of crack resistance and reinforcement, and can effectively prevent the occurrence of cracks. At the grass-roots level surface must be clean, no dirt, frost, grease, mold release agents and other pollutants. If you find the above attachment, should use clear shovel knife, steel wire brush, cleaning agents, etc. Then wash with water, and dry before painting. Metope processing should be construction as soon as possible, to avoid pollution again. Exterior wall engineering construction should be construction scheme; Choose the best construction for the professional and technical team. Before construction should be guided according to technical requirements of external wall. Each working procedure should be done before the construction technical disclosure. Technical requirements, operating key points and quality requirements should be implemented to every operator, in order to correct the construction. During the construction of the inspection system, strictly carry out examination and acceptance of each working procedure, unqualified process determined to rework; Only in the former procedure, after passing the acceptance, can start the procedure. Anti-crack mortar plaster must be in strict accordance with the procedures and process procedures. According to climate condition, the curing time shall not be less than 7 d. For control of each batch of coating thickness of be bored with child, according to the site conditions and the increasing number of engineering quality requirements. From the top to the bottom of the building coating construction. Each layer of coating by seam and metope of Yin and Yang Angle junction should be defined, shall not leave at will. Each coating shall be uniform coating, and may not be too thick. If it is the second spraying, shall be carried out after the first completely dry. Paint before use must be fully mixed, water shall not be arbitrarily shading. Before construction, construction should according to the factory instructions. Don't think the paint is thicker, the better, or to cut the costs and the infinite dilute with water. If dilute excessive, paint the ratio imbalance, thin film after construction, poor adhesion, it won't be long before the powder will be cleared. According to the climate and construction schedule reasonable arrangement of construction. Strictly control the temperature