A little knowledge about paint application
Answer: Alkali efflorescence on the wall causes the surface of the paint to become mottled and white. Using bright color series on the wall is prone to fading under strong sunlight.
Why does paint wrinkle?
Answer: Wrinkling may occur when the wall is not dry or the primer is not dry, when the coating is too thick, or when the construction temperature is too low.
Why does the coating application experience the phenomenon of undercoating biting?
Answer: Topcoat and primer are incompatible, especially when the topcoat contains strong solvents, which cause mutual solubility when applying the topcoat. Similar problems may occur when applying the topcoat when the base coat is still wet.
Why can't water be added to paint at will?
Answer: Generally, there are microorganisms in water. Especially on construction sites, it is more likely to come into contact with unclean water sources. If water is added to the paint at will and the paint is not used up immediately, mold will occur within a few days. In addition, if too much water is added, the coating will become too thin, and the ability of the base material in the coating to contain pigments and fillers will decline. Once the critical number is exceeded, various problems will occur in the coating, such as powdering, odor, and poor adhesion.
What should I do if I find the paint sagging when painting?
Answer: The reason is that the coating thickness is too thick and the drying is slow. It could also be that too much water was added, reducing the viscosity of the paint. Even if the wall is smooth and no primer has been applied, sagging may occur. It is required to be painted as prescribed. Water should not be added unless it is specially necessary.
Can solvent-based coatings and water-based coatings be applied simultaneously?
Answer: No, because the organic gases volatilized during the drying process of solvent-based coatings will undergo a chemical reaction with water-based coatings, causing them to turn yellow. After applying solvent-based coatings, water-based coatings should be applied after thorough ventilation for a relatively long period of time.
What is the significance of the glossiness of coatings?
Answer: When light enters the surface of the coating, some of it will refract. The degree of reflection affects the gloss of the coating. High-gloss coatings can achieve a magnificent, bright and lustrous effect, while low-gloss coatings give people a sense of elegance, softness and simplicity.
Why can some paints be used as both base materials and surface materials?
Answer: These paints are rather special and generally of very good quality. For instance, silicone coatings, whose components can chemically bond with the wall, have strong adhesion and a firm bond, and thus can be used as a primer.