Pay attention to the brand and reputation: There are numerous brands of waterproof coatings on the market. You should choose brands with high popularity, good reputation, and international quality system certification. Products from well-known brands are more reliable in quality, usually have better waterproof effects and environmental performance, and also offer more comprehensive after-sales services.
Select according to the usage scenario: Different spaces and construction parts have different requirements for the performance of waterproof coatings. Generally, the principle of "rigid for walls and flexible for floors" is followed. For example, flexible coatings are suitable for the floors of bathrooms and kitchens, while rigid coatings can be used for the walls. For long-term damp places such as reservoirs and swimming pools, polyurethane waterproof coatings with high strength, good ductility, excellent water resistance, and acid-alkali resistance are preferred.
Consider environmental performance: Waterproof coatings are part of hidden projects. If they do not meet environmental standards, harmful substances will be released slowly, endangering human health. Choose products that meet national standards, such as GB 18582-2020 Limits of Harmful Substances in Architectural Wall Coatings, and it is better to have authoritative environmental certifications such as the China Environmental Label (Ten-Ring Certification).
Check waterproof performance indicators: High-quality waterproof coatings should have good water resistance, impermeability, high tensile strength, and elongation at break. Coatings with good water resistance can maintain their waterproof effect after long-term immersion in water; strong impermeability can effectively prevent water penetration; high tensile strength and elongation at break enable them to adapt to the deformation of the base layer and are not easy to crack.
Take construction convenience into account: The convenience of construction affects the efficiency and cost of decoration. Single-component waterproof coatings do not need to be mixed, can be used directly after opening the bucket, are easy to operate, and can save time and labor costs. In addition, it is necessary to pay attention to the drying time of the coating; coatings with a short drying cycle can speed up the construction progress.
Inspect the product's appearance and quality: High-quality waterproof coatings should have no precipitation, stratification, or caking, and no strong pungent odor. When purchasing, you can open the coating bucket to check and smell it. If there is any abnormality, it indicates that the product quality may have problems.
