What is the difference between flexible putty and water-resistant putty?

Flexible putty is made of high-quality cement, fillers, synthetic polymers and selected additives. According to the flexibility and waterproof performance of the putty, it is divided into ordinary exterior wall putty, flexible anti-cracking putty, flexible exterior wall putty and waterproof putty. Type exterior wall putty.

Water-resistant putty is a type of construction putty, specifically referring to a type of putty that can meet the N-type putty standard in the "Putty for Building Interiors" (JG/T298-2010), that is, the water-resistant putty standard. After water-resistant putty is normally applied to the wall, its service life should be more than 15 years, while general non-water-resistant putty can only reach about 5 years if it is protected by latex paint on the outer layer.

Flexible putty and water-resistant putty are two different types of construction putty. Flexible putty is formulated with high-quality cement, fillers, synthetic polymers and selected additives. According to its different flexibility and waterproof properties, it is divided into ordinary exterior wall putty, flexible anti-cracking putty, flexible exterior wall putty and waterproof type Exterior wall putty. Water-resistant putty is a special kind of construction putty, which refers to a type of putty that can meet the standard of "Putty for Building Interiors" (JG/T298-2010), which is type N, that is, water-resistant putty standard. After water-resistant putty is constructed, its service life should be more than 15 years, while general non-water-resistant putty can only reach about 5 years if it is protected by latex paint on the outer layer.

The difference between flexible putty and water-resistant putty mainly lies in their performance characteristics. Flexible putty has good water resistance and flexibility, which can prevent external water from entering and causing the putty layer to soften and fall off. At the same time, it can adapt to the long-term rapid temperature changes of the exterior wall insulation system. Water-resistant putty has good feel, durability and adhesion, and can maintain good adhesion and decorative effect after long-term use.

During construction, you need to pay attention to the following points. First clean the substrate to make sure it is clean and flat. Then add the dry powder and water into the container, stir evenly, let it sit for 5 minutes, and stir again. When scraping, make sure the putty is in close contact with the base layer, firmly bonded, and the surface is smooth and flat to reduce the workload of polishing. In order to prevent the putty from shrinking too much and causing cracking and falling off, the thickness should not be too thick in one batch. According to the characteristics of different putties, the thickness should be 0.5~1.0mm. When polishing, appropriate polishing methods and tools should be selected according to the quality requirements of different processes. When sanding by hand, you should wrap the sandpaper (cloth) on the sanding pad and push the pad back and forth. Do not just use one or two fingers to press the sandpaper to avoid affecting the smoothness of the sanding. Electric grinders are commonly used for mechanical grinding. Clamp the sandpaper on the grinder and gently push it on the base layer. It is strictly forbidden to press hard to avoid overload damage to the motor.

In short, flexible putty and water-resistant putty have their applicability and advantages in different occasions and needs. During construction, the appropriate type of putty should be selected according to the actual situation and operated in strict accordance with the specifications to ensure the construction quality and effect.