Paint agent exterior wall engineering construction precautions

China Paint Online News Information: Exterior latex paint is currently one of the mainstream materials of architectural exterior decorative paint, it is used in various types of buildings, because it is simple to build, rich in color soft, smooth and clear lines, easy to repair and update. However, if the construction operation is not proper, or the paint performance does not understand, or the grass-roots treatment is not good, etc. , will affect the quality of the coating, the exterior wall beautiful. In order to ensure the quality of exterior paint finishes, the construction must do the following work:pay attention to grasp the quality of coatings and other materials
On the material classification stacking, marking, and by a person responsible for the establishment of materials into the acceptance system, and effectively put good material quality.attention to grasp the construction points of the grass-roots
the key to grasp the construction points of the grass-roots level lies in the strength, flatness and cleanliness of the grass-roots level. First of all, the water content of the grass-roots is an important index of the grass-roots strength, different types of coatings on the grass-roots moisture content requirements are different. Due to the poor breathability of the coating film of solvent-based coatings, there is hydrophobicity. Secondly, the applied surface flatness difference, if there is a clear connection or surface roughness is different, spray, roll, brush paint after also because of uneven absorption of the paint, resulting in uneven color of the outer wall, easy to form a "flower face." Moreever, the grass-roots surface is uneven, when scraping putty batch caused by different thickness, dry and wet uneven, but also easy to form local cracking, peeling. In addition, grass-roots pollution, such as falling ash, soil, film disfilming agents, oil and other attachments, will also be due to the film and grass-roots adhesion is not good resulting in skining, peeling, color change and other phenomena, so we must ensure that the grass-roots surface clean.Pay attention to the temperature and humidity of the construction environment
all kinds of coatings need to be in a certain temperature conditions to form a continuous film, so it requires a higher construction environment, the appropriate temperature is conducive to the dry coating, film formation. If the ambient temperature is too low or too high during construction, it will reduce the technical indicators of the coating, resulting in poor film-forming coating, so that the surface can not be uniform and produce film cracking, powdering, water fall off, seriously affecting the appearance of the building and the life of the finish. Therefore, we should strictly grasp the minimum construction temperature and humidity allowed by the coating, the construction environment of the coating project should be selected between 5 degrees C to 35 degrees C, and good ventilation, which can not only speed up the conjunctivation process, but also beneficial to the health of operators.
with the development of new products, the types of coatings are also increasing, especially for new product technical standards, the use of functions should be correctly in accordance with the requirements of the instruction manual for construction, must not act on experience. It should also be emphasized that the coating film can not be completed in an instant, there is a process, so the requirements not only in the construction of the minimum construction temperature requirements, but also after the construction of a period of time should also meet the temperature requirements. If there is an abnormal situation due to climate change and other reasons, appropriate protective measures should be taken to ensure the quality of the coating.