1. Good decorative performance: It is required that the interior and exterior wall coating manufacturers have rich colors and excellent color retention, which can maintain the original decorative performance for a long time.

2. Good weather resistance: Interior and exterior wall coatings, due to exposure to the atmosphere, must withstand the effects of wind, sun, salt spray corrosion, rain, and changes in temperature. Under the long-term repeated effects of these external natural environments, the coating is prone to cracking, powdering, peeling, discoloration, and other phenomena, causing the coating to lose its original decorative and protective functions. Therefore, it is required that the coating of the exterior wall should not experience the above-mentioned damage within the specified service life.

3. Good stain resistance: Due to the significant differences in environmental conditions in different regions of China, for some cities with developed heavy industry and mining, the high amount of dust and other suspended substances in the atmosphere can cause easily contaminated coatings to lose their original decorative effect, thereby affecting the appearance of buildings. Therefore, exterior wall coatings should have good stain resistance, so that the coating is not easily contaminated or easily cleaned after contamination.

 4. Good water resistance: The interior and exterior wall coating manufacturers' finishes are exposed to the atmosphere and are often washed away by rainwater. Therefore, the exterior wall coating should have good water resistance.

5. Good resistance to mold: The interior and exterior wall coatings are prone to mold growth in humid environments. Therefore, it is required to apply a coating to inhibit the growth and reproduction of mold and algae.

6. High elasticity requirements: Exposed coatings are severely affected by factors such as climate and geology. Elastic exterior latex paint is a type of coating specifically designed for exterior walls, which can better maintain a smooth and flat surface for a long time.

In addition, according to different design functional requirements, higher requirements have been put forward for exterior wall coatings: for example, in the application of various exterior wall insulation system coatings, it is required that the exterior wall coatings have good elastic elongation to better adapt to surface cracking caused by deformation of the base layer, and have a covering effect on small cracks in the base layer;

For exterior wall coatings with anti aluminum-plastic panel decorative effects, they should also have better metallic texture and ultra long outdoor durability.

How to distinguish the quality of interior and exterior wall coatings?

Interior and exterior wall coatings are a type of coating used to paint the exterior walls of buildings, which require sun protection, waterproofing, and other properties. How to judge the quality of so many interior and exterior wall coatings on the market?

 1. Under static conditions, the water quality solution and interior and exterior wall coatings will stratify, with the upper 1/4 being an aqueous solution. If the aqueous solution is colorless or slightly yellow, and there are few clear floating objects, then the coating is good.

2. Check the particle fineness, take a small amount of exterior wall coating and put it into a cup of clean water. After stirring, the water becomes clearer, and the particles are independent, non adhesive, and of uniform size. This indicates that the quality of the coating is better.

3. Look at the wire drawing, take a small stick and stick it to the exterior wall paint. It is better to be able to hang the wire long and continuously drop it evenly.

4. Try to feel and rub the exterior wall paint with your fingers. There is no roughness like sand particles, and there is a smooth feeling when washed with water.

5. Odorous and environmentally friendly exterior wall coatings should be water-based, non-toxic and odorless; It is better not to buy the exterior wall paint with essence added. The additives also have the problem of environmental protection. Gansu Interior and Exterior Wall Coating Manufacturer