How to buy
The function of latex paint is very important. It is necessary to select the latex paint according to different parts of the brushing. For example, the latex paint used in the walls of bedrooms and living rooms requires strong adhesion, delicate texture, good resistance to differentiation and breathability, and kitchen and bathroom facilities. Latex paints should have waterproof, mildew-proof and washable properties.
Late-quality latex reading not only affects the quality of the construction, the unqualified chemical raw materials contained in the DX can also endanger human health, so you should go to a specialty store or special dealer store to purchase. When purchasing, check the product's packaging, appearance and internal quality. After the lid is opened, the truly environmentally-friendly latex paint should be water-based, non-toxic and odorless, so if the user smells a pungent odor or industrial flavor, it is non-genuine latex paint. After a period of time, the surface of the genuine latex paint will form a very thick and elastic oxide film, which will not be easily cracked, and the defective product will only form a thin film, which is fragile and has a spicy smell. Mix the emulsion paint with a wooden stick and then pick it up from the root. The high-quality latex paint will fan down to the next level. Touch with your finger, the genuine latex should feel smooth and delicate. The latex paint is applied to the wall and wiped with a damp cloth. The genuine color is bright as new. The defective product will fade due to the poor connection and water resistance.
When looking at the ingredients when purchasing, the composition of the high-quality coating should be a copolymer resin to a pure acrylic resin. Also, don't forget to look at the product's shelf life.
Construction method
Latex paint construction methods can use hand brush, roller and spray. In order to ensure the brushing efficiency and brushing quality, it is best to use a combination of hand brush and roller coating. The large wall body uses the coating, and the corner part uses the hand brush.
Brushing latex wall should be smooth, strong, should first remove all the filling surface, cracks, and make up if it is a new self. Just scrape off the wall coverings that were used to make the original building. If it is an old building or if it has been renovated before, the committee will scrape all the original wall paint and Zhuangzi until it returns to the cement on the wall. Grassroots. Mix the glue evenly, evenly wipe it on the treated flat substrate, and then wipe it with a well-adjusted 821 donut and smooth it. After the putty is dried, apply the latex method again. First brush the brush with the brush to remove the wall. Wait two or three hours before applying a large area roller. Should try to use high quality roller. Shi Shiguang applied a primer and waited until the primer was completely dry after 6 hours before applying the topcoat.
The construction should be avoided in rain and fog weather. Generally, the construction is best when the temperature is 25 degrees Celsius and the humidity is 50%. It should not be constructed under the conditions of less than 10 degrees Celsius.
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Common problems and prevention
In the use of latex pellets due to the quality of the latex paint itself and the brushing problem, the latex method often encounters such common diseases:
Powdering
Cause: Due to the poor weather resistance of some of the low-grade emulsions, if the walls are not treated beforehand or are applied at a low temperature, the emulsion paint film will be poor. Soon after the establishment of Xu Gang Latex This group will happen. Sometimes too much water when brushing and other reasons will also cause the latex to reach the point.
Prevention: First of all, the wall should be completely dealt with, with a dedicated wall putty Xu brush the wall and Kaiping whole; then first with water or oily back cover primer coated side, and then painted twice the top coat. In addition, the latex must meet the required ratio of water, and avoid construction at low temperatures.
Discoloration and fading
Causes: Some wall temperatures are too high, long hours of sunshine, or water-soluble salts crystallize on the surface of the wall and cause discoloration and discoloration of latex paints; some walls contain too high alkalinity, which affects the weak alkaline resistance The pigments or resins cause discoloration and discoloration; while others are improperly constructed and constructed simultaneously with polyurethane paints, and TI components in the paint will discolor the latex.
Prevention: As the first situation is relatively rare, you can consult the relevant personnel; the second case, referring to the method of Yang Hua; To avoid the third case, latex reading and polyurethane paint not both at the same time, can be Two days after the application of the paint (in the case of white degrees Celsius), apply the latex again, or after the paint is dry (7 days at 25 degrees Celsius).
Peeling and peeling
Cause: This phenomenon is caused by the gas regulation inside the wall, which causes the paint film to separate from the wall and cause peeling. Of course, improper handling of the wall can also cause such problems.
Prevention: look before construction, if any seepage occurs, please promptly ask the relevant department to resolve it. If you need to swim. When the phenomenon of evaporating water from the wall is unavoidable, special treatment should be added. It is recommended to use a durable and waterproof bomb to brave the wall for pretreatment, and then brush it as usual to avoid the skin and Shedding between groups. In view of the above three conditions, in addition to special reasons, improper handling of the cultivating surface will cause the appearance of latex paint on one side or the other. Therefore, when you supervise the construction, you must allow the workers to clean the cultivating surface. Do not act rashly, otherwise the consequences can be disastrous.
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