Advantages of Redispersible Latex Powder

Advantages of Redispersible Latex Powder

The Role of Redispersible Latex Powder in Putty

Redispersible latex powder is a thermoplastic resin powder obtained by spray-drying a polymer emulsion to remove moisture.

Preventive Measures for Sanding of Cement-Sand Mortar Floor Surfaces

Why do properly laid tiles crack?

New Earth rubber powder shipped to South America

Why Use Water-Resistant Putty for Wall Finishing?

Why Use Water-Resistant Putty for Wall Finishing? When it comes to home wall finishing, choosing the right putty is crucial. If the putty quality is subpar, the wall is prone to mold, peeling, cracking, hollowing, and even detachment—issues that not only severely compromise the overall aesthetic but also pose health risks to family members. So why opt for water-resistant putty instead of ordinary putty? Let’s examine the key differences between these two types. 1) Water Resistance Ordinary putty is highly susceptible to water; it dissolves upon contact, exhibiting extremely poor water resistance. In high-humidity environments, walls finished with ordinary putty quickly become loose, chalky, and start peeling. In contrast, water-resistant putty contains lime-based materials that, during the curing process, react with carbon dioxide in the air to form crystalline calcium carbonate, significantly enhancing its water resistance. For example, EcoHome Wall Primer (water-resistant putty powder) has undergone numerous tests across the country, and its samples remained free of powder loss or slurry shedding after being immersed in water for 72 hours. 2) Whiteness and Fineness The white pigment used in ordinary putty typically has a whiteness of only about 85 and a fineness of around 300 mesh, resulting in relatively coarse particles. Even when sanded with the finest-grade sandpaper, the surface cannot achieve a truly smooth and refined finish. Water-resistant putty, on the other hand, delivers a smooth, fine surface after application; once polished, it feels silky to the touch, making it suitable as a decorative layer. For instance, EcoHome Wall Primer (water-resistant putty powder) uses raw materials that meet stringent procurement standards: a fineness of at least 400 mesh and a whiteness of no less than 90. 3) Paint Consumption As mentioned earlier, ordinary putty has a particle fineness of only about 300 mesh, meaning its particles are relatively coarse. Walls coated with such putty tend to have larger pores, which leads to poor leveling when applying latex paint. This results in an uneven, less refined paint film that compromises aesthetics and increases paint consumption, ultimately driving up costs for homeowners. Tests have shown that, for the same wall area, using water-resistant putty like EcoHome Wall Primer (with a particle fineness exceeding 400 mesh and a whiteness above 90) can reduce paint consumption by 25–30% compared with ordinary putty. 4) Bond Strength According to the JG/298-2010 standard “Putties for Interior Use in Buildings,” the bond strength of putty is strictly regulated. Ordinary putty must meet a minimum bond strength of 0.25 MPa in its dry state, with no specific requirement for wet-state performance. In contrast, water-resistant putty must achieve a bond strength of at least 0.50 MPa in its dry state and maintain a wet-state bond strength of over 0.30 MPa. This standard clearly demonstrates that water-resistant putty offers significantly higher bond strength than ordinary interior putty, thereby greatly reducing the risk of hollowing and detachment in walls. 5) Overall Cost Because ordinary putty lacks water resistance, any future renovations will require completely removing the existing coating along with the putty before reapplying new layers. The removed waste is difficult to recycle and can pollute the environment, leading to both resource waste for society and increased renovation costs (material and labor) for homeowners. By contrast, walls finished with water-resistant putty can last for 15 years or even longer. Even if secondary, tertiary, or further renovations become necessary after several years, there’s no need to strip away the durable water-resistant putty layer; simply sand the surface, make localized repairs, and proceed with the next stage of work. Although water-resistant putty may cost 1–2 times more per unit than ordinary putty, the resulting decorative effect far surpasses what ordinary putty can achieve. Moreover, when factoring in reduced paint consumption and lower costs for putty and labor during subsequent renovations, the overall expense of using water-resistant putty is actually lower.