April 24, 2025 – Waterproof coatings play a pivotal role in building waterproofing projects, as their performance directly impacts the waterproof quality and service life of buildings. With a wide variety of waterproof coatings available on the market, each with its own unique characteristics, consumers often face numerous considerations when making their purchase decisions.
In terms of types, acrylic – based waterproof coatings stand out for their single – component and environmentally friendly nature. They are non – toxic, non – flammable, and offer excellent aging resistance and high elongation, performing particularly well in the construction of irregular structures. Polymer cement – based (JS) waterproof coatings are two – component materials that combine rigidity and flexibility, providing breathability and rapid drying. However, when purchasing, it is crucial to choose products from reputable brands, as inferior products may contain talcum powder, which can affect their performance. Mortar – based waterproof coatings are also two – component water – based materials. They are green and pollution – free, dry quickly, but lack elasticity, making them more suitable for stable structural parts.
According to AsiaMB, there is a great deal of expertise involved in the actual selection of waterproof coatings. First, the choice should be based on the building structure. Polymer – based coatings are suitable for concrete or cement mortar structures; polyvinyl alcohol – based coatings are appropriate for lime mortar structures; and solvent – based coatings can be used for wooden or metal substrates. Second, considering the different requirements of various building parts, interior walls require coatings with strong adhesion, fineness, and breathability, while kitchens and bathrooms need products with waterproof and mildew – resistant functions. Third, the time interval between two decorations should be taken into account. For a long interval, coatings with excellent durability should be selected, while for a short interval, the durability requirement can be reduced. In addition, the waterproof performance of the product is of utmost importance, and attention should also be paid to its environmental friendliness to avoid the long – term release of toxic substances. Among synthetic polymer waterproof coatings, polyurethane waterproof coatings are made by mixing isocyanates, polyethers, and various additives; JS waterproof coatings are formulated by combining polyacrylate emulsions with cement; and silicone rubber waterproof coatings are made from emulsion – polymerized organosilicone rubber, offering good permeability and elasticity, and are suitable for both dry and wet structures. By mastering these key points, one can select the most suitable waterproof coatings for building waterproofing projects.