Method for make exterior wall coating formula

People must choose good paint and ensure the correct construction method when decorating the external wall, so as to have better decorative effect and achieve the original function. Therefore, people need to know how to make exterior wall coatings, in addition, they also need to know and master the correct steps and procedures in the construction process of exterior wall coatings.

People must choose good paint and ensure the correct construction method when decorating the external wall, so as to have better decorative effect and achieve the original function. Therefore, people need to know how to make exterior wall coatings, in addition, they also need to know and master the correct steps and procedures in the construction process of exterior wall coatings.

How to make exterior wall coating?

1, check whether the flatness and lines of the main wall are straight and clear, and require the base surface to be smooth and dry (cement mortar surface should be cured for more than 15 days), free from floating ash, asphalt and other stains, with pH < 10 and moisture content < 10%. The floating layer on the old cement surface should be removed to ensure the base is firm, the impurities on the wall surface should be removed, the porous and rough base surface should be repaired, and then it should be smoothed with a grinding wheel.

2. According to the decoration requirements, divide the required graphics with cement mortar or tape paper (each dividing surface is not more than 1.5m2). Primer construction. Neutralization treatment: use special neutralizer to neutralize the alkaline wall surface to ensure that the wall surface is not alkaline after construction, and its dosage is about 0. 1-0.2kg/m2. Primer construction: Wash the neutralized wall surface with clear water, and after the wall surface is dry, carry out primer construction, and the dosage of primer is 0. 15-0.20kg/m2. The primer can be applied by brushing, rolling or spraying.

3. Construction of main coating (real stone paint): After the bottom coating is completely dried (generally 4-6 layers), the construction can be started. According to different decoration requirements, experimental spraying is carried out first to determine the required pressure, gun diameter and spraying amount, which is generally 5 kg/m2. Monochrome main coating: it should be sprayed twice. Before the film is dried, it can be sprayed for a second time. Color matching main coating: Double-tube real stone paint spray gun or single-tube real stone paint spray gun can be used for spraying in several times.

4. Auxiliary treatment: according to the needs of decoration, remove the framing belt and conduct jointing treatment. Topcoat (topcoat) construction: The construction can only be started after the main coating is completely dried (generally about 48℃), and it can be brushed or painted. The dosage of topcoat is 0. 15-0.20 kg/m2.

Construction technology of exterior wall coating?

1. Bottom treatment: remove dust and oil stains from the wall. Bottom pleading is boring, too wet will make the paint film blister, affect the hiding power, and make the paint film have different colors. Batch putty: scrape the cracks, holes, pits and uneven places on the bottom surface, and apply putty to make them dense and flat. After drilling the putty, scrape off the remaining putty with a shovel, and then polish it with sandpaper to clean up the dust on the surface in time. Putty can be general putty or special external wall putty for China Resources.

2. Brush coating can be applied by brush coating, roller coating and spray coating: it is usually divided into primer coating, intermediate coating and topcoat. When using, the paint should be fully stirred evenly and the dilution viscosity should be moderate. The interval between brushing teeth is around 2 o'clock. The dilution ratio of paint is usually: paint: diluent (water) = 100: 20-35. Every time the brushing interval exceeds 2 o'clock, please specify the construction interval of different commodities according to the detailed commodity construction skills and commodity explanation.

After reading the above introduction, you should already know the content of this aspect. Ask professionals to do it, so as to achieve the effect and function. The construction technology of exterior wall coating also needs to be understood, and only professional related staff can have more understanding and understanding of this aspect.