A common phenomenon is a powdery defect. Falling powder appears shortly after painting. This is due to the poor weatherability of the coating resin, the untreated surface of the wall, low temperature during brushing, poor film formation, or excessive watering during painting. After the treatment, the powder is cleaned and primed with a primer, followed by two layers of latex paint with better weatherability. Discoloration of the second defect and excessively high humidity of the discolored substrate. Discoloration and discoloration of the water-soluble salt crystals on the surface of the wall (weathering). Alkalinity in the substrate impairs the weakly basic pigment or resin, causing discoloration and discoloration. The bad weather, the improper paint selection, is another cause of discoloration and fading. Handle or wipe off the surface where the problem has occurred. Allow the cement to dry completely, then add a coat of sealant. This avoids or reduces discoloration and fading.
Defects three peels and peeling This phenomenon occurs on the surface of concrete, metal and wood. The moisture in the wall causes the paint film to leave the surface and cause peeling. Prepare poorly beforehand and did not dispose of powdered materials, algae, oil stains, loose plaster, and original peeling paint films. As a result, the paint film was not adhered tightly and caused peeling and peeling; incorrect brushing methods or poor quality Primer can cause peeling. Treatment Check whether the moisture evaporates from the cement or leaks on the wall. If the wall leaks, you must ask the relevant department to help solve it. It is also possible to remove the detached film and loose material, repair the leak, and wait for the wall to dry before recoating. When recoating, it can be primed with a sealing primer. Fill the surface of the fault with a durable putty and finally apply it with a top coat. Defect 4
Algae and mold algae grow in the sun and rain, so buildings need good drainage systems and rain protection facilities. The rough surface of the cement and many substances also tend to retain moisture and promote the growth of algae and molds. Therefore, outdoor paints with good weatherability and anti-algae properties are required. Treatment of infected areas with high-pressure water, supplemented by manual scraping; treatment of the surface with a mildew-proof solution to stop the growth of the organism on the concrete; and then coated with an anti-algae coating with high mold properties, and finally with an exterior wall coating brush.
Symptoms Possible causes The treatment method There is a brush mark Viscosity is too large Add a little water Diluted æµæµ Or have cracks Duishui too, Brush too thick Add paint to re-adjust the viscosity, Brush thin Some fullness difference Watered too much, Brushing Too thin and over-painted Wet paint film Bubble brushing Improperly Brush back as soon as possible to dry film There is pit or light paint When the paint is not dry When the water is polished Then paint it again Spray paint film Bubble gun Water or paint The water is not sprayed cleanly, the paint is evenly mixed with oil. The oil is mixed with solvents or other oily substances. After grinding, the brush is prepared. The adhesion is poor. The adhesion is poor. The substrate is polished. The first putty and then the paint film is leveled and brittle. After the temperature is too low, after the temperature is suitable, the paint surface will be white and the putty will be too thick. It will not be polished and polished.
Defects three peels and peeling This phenomenon occurs on the surface of concrete, metal and wood. The moisture in the wall causes the paint film to leave the surface and cause peeling. Prepare poorly beforehand and did not dispose of powdered materials, algae, oil stains, loose plaster, and original peeling paint films. As a result, the paint film was not adhered tightly and caused peeling and peeling; incorrect brushing methods or poor quality Primer can cause peeling. Treatment Check whether the moisture evaporates from the cement or leaks on the wall. If the wall leaks, you must ask the relevant department to help solve it. It is also possible to remove the detached film and loose material, repair the leak, and wait for the wall to dry before recoating. When recoating, it can be primed with a sealing primer. Fill the surface of the fault with a durable putty and finally apply it with a top coat. Defect 4
Algae and mold algae grow in the sun and rain, so buildings need good drainage systems and rain protection facilities. The rough surface of the cement and many substances also tend to retain moisture and promote the growth of algae and molds. Therefore, outdoor paints with good weatherability and anti-algae properties are required. Treatment of infected areas with high-pressure water, supplemented by manual scraping; treatment of the surface with a mildew-proof solution to stop the growth of the organism on the concrete; and then coated with an anti-algae coating with high mold properties, and finally with an exterior wall coating brush.
Symptoms Possible causes The treatment method There is a brush mark Viscosity is too large Add a little water Diluted æµæµ Or have cracks Duishui too, Brush too thick Add paint to re-adjust the viscosity, Brush thin Some fullness difference Watered too much, Brushing Too thin and over-painted Wet paint film Bubble brushing Improperly Brush back as soon as possible to dry film There is pit or light paint When the paint is not dry When the water is polished Then paint it again Spray paint film Bubble gun Water or paint The water is not sprayed cleanly, the paint is evenly mixed with oil. The oil is mixed with solvents or other oily substances. After grinding, the brush is prepared. The adhesion is poor. The adhesion is poor. The substrate is polished. The first putty and then the paint film is leveled and brittle. After the temperature is too low, after the temperature is suitable, the paint surface will be white and the putty will be too thick. It will not be polished and polished.
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