Construction Scheme of Exterior Wall Coatings Functions of Exterior Wall Coatings and Precautions in Construction

Exterior wall coating is a coating used on the exterior wall of a house. This kind of paint generally has the effect of waterproof and sun protection. After years of exposure to water and sunlight, the external walls of houses are easily damaged and worn. The selected exterior wall coating can enhance the water resistance and sun resistance of the house, maintain the wear resistance of the house and prolong the service life of the house. Below we will introduce the construction scheme of exterior wall coating for you.

A, exterior wall coating construction scheme

1, wall leakage control method

The waterproof of the original structure is a linear structure, and its function is to disperse water. When the cavity structure is damaged locally, it is best to use restorative repair.

2, repair with waterproof material

This method has a wide range of applications, that is, sealing or brushing with oil-soluble or water-emulsion waterproof materials in rainwater infiltration rooms. Waterproof measures shall be taken on the outer side of the external wall panel, and waterproof materials shall be used for the wall.

3, exterior wall coating water plugging method

That is, waterproof measures are taken on the inner half of the outer wall to prevent rainwater from invading through waterproof materials. The construction strength is aerial work. For all kinds of waterproof restoration projects, there are professional and technical personnel to investigate, dismantle and formulate construction plans. Therefore, there is no need to set scaffolding for waterproofing and plugging of high-rise external walls, saving auxiliary costs.

Second, the function of exterior wall coating

1, good stain resistance: due to the great differences in environmental conditions in different regions of China, for some cities with developed heavy industry and mining industry, there are more suspended substances such as dust in the atmosphere, which will make the easily contaminated paint lose its original decorative effect, thus affecting the appearance of buildings. Therefore, the exterior wall coating should have good stain resistance, so that the coating is not easy to be polluted or easy to clean after pollution.

2. Good decoration: the exterior wall coating is required to be rich in color and excellent in color retention, and can maintain the original decorative performance for a long time.

3. Good weather resistance: When the coating is exposed to the atmosphere, it will be affected by wind, sunlight, salt spray corrosion, rain, cold and hot changes and so on. Under the long-term repeated action of these external natural environments, the coating is easy to crack, powder, peel and change color, which makes the coating lose its original decorative and protective function. Therefore, it is required that the coating of the external wall will not be damaged within the specified service life.

Three. Matters needing attention in the construction of exterior wall coatings

1. In the construction scheme of exterior wall coating, the formation of coating film will also be affected by the construction temperature, humidity and bottom treatment of exterior wall coating. Let's take a closer look. Influence of construction temperature: usually, the latex paint in exterior wall coating needs to be above 5 degrees Celsius before construction, and a few need to be above 10 degrees Celsius. In the cold winter, the high temperature can only meet the construction requirements of exterior wall coatings at noon, while the temperature is low in the morning and evening, and the construction workers do not pay attention to adjusting the construction time in time, so the coatings on some construction walls will not form a good film.

2. Influence of construction humidity: The influence of construction humidity on exterior wall coating construction is often ignored by many construction teams, but when the humidity is more than 85% or the wall is still wet after rain, exterior wall coating construction cannot be carried out. Influence of primer treatment: In the construction of exterior wall coatings, besides the construction humidity, primer treatment will also be one of the problems that are easily overlooked. The most common way is to use low-strength putty, which affects the quality of the coating and eventually causes the destruction of the whole coating.

The above content introduces the construction scheme of exterior wall coating, the function of exterior wall coating and the relevant information of construction precautions. After the construction is completed, the final inspection shall be carried out. If it is incomplete, polluted or damaged, it should be repaired immediately, and the protected area should be cleaned up, and the site should be cleaned up to continue the protection work.