A, exterior wall coating renovation construction scheme
1, construction, wall leakage prevention methods to repair the original structure waterproof adopts linear structure waterproof, and it is also known that its function is to disperse water. When the cavity structure is damaged locally, it is best to use restorative repair. Repairing with waterproof materials has a wide range of applications, that is, sealing or brushing with oil-soluble or water-emulsion waterproof materials in rain-soaked rooms. Waterproof measures shall be taken on the outer side of the external wall panel to waterproof the wall.
2. It is also very important to use the method of coating film to block water on the outer wall, that is, it is also important to take waterproof measures on the inner half of the outer wall and block rainwater intrusion through waterproof materials. The construction strength is aerial work. All kinds of waterproof restoration projects have professional and technical personnel to investigate, dismantle and formulate construction plans. External wall waterproof plugging does not need scaffolding, saving auxiliary costs.
3. During summer construction, the weather is hot in summer, and two hours before putty construction is also a basic point. The wall should be wetted with clear water. After each batch of putty is scraped dry, it needs to be cured with clear water. Primer and topcoat should be mixed evenly before use. If mixing is carried out indoors or on the roof, plastic sheets or newspapers should be placed under the bucket to ensure that the ground is clean and tidy, and the container cover must be cleaned first to prevent impurities from mixing.
Second, how to choose exterior wall coatings
1. First of all, when choosing, it is also a good practice and very important to try to buy in a regular market or a specialty store with a high reputation. Mainly due to the supervision and spot check results of the Municipal Bureau of Quality and Technical Supervision in recent years, the sampling pass rate of interior wall coatings sold by these enterprises is relatively high. The environment in which paint is used. China is a vast country with complex climatic conditions and great differences. Such as sunshine, wind and rain, temperature and humidity, etc.
2. From the perspective of environmental protection, the buildings in coastal cities should focus on the selection of coatings with good salt spray resistance; It is helpful for our use and is very important in areas polluted by acid rain. Should choose acid rain resistant exterior wall coating; Exterior wall coatings with good mildew and algae resistance should be selected in rainy areas in southern China. When the temperature is lower than 5℃, emulsion coating should not be used, otherwise the coating will not form a film well, and solvent-based coating should be used.
Last but not least, people still pay attention to brand selection. Whether it is a foreign brand or a domestic brand in the market, brands are very important, so we must choose a big brand. Generally, it is a series of products. The products produced by different brands and enterprises are not comparable in price and quality, while the higher the price, the better the quality of the products produced by the same enterprise. Compared with domestic products, there is little difference in product performance and the price is relatively high.
The renovation construction scheme of exterior wall paint introduced by Bian Xiao will also be of great help when we construct and make our exterior wall have a good environment.