One、How to repair walls with putty powder
1、Wall cleaning
When patching walls with putty powder, we can use a scraper to remove loose, powdery layers, and clean the dust from the walls. If there is widespread peeling or detachment of the wall surface, it is necessary to remove all the existing putty layers and repair the wall by re-applying putty. Before applying the putty, it is advisable to apply a layer of interface treatment agent on the wall surface to improve the adhesion between the putty and the substrate.
2、Putty powder preparation
We add the appropriate amount of putty powder to the mixing bucket, then add water and mix thoroughly. Typically, the putty powder and water are mixed in a ratio of 1:0.5. The specific ratio should be checked on the product instructions. After thoroughly mixing the putty powder with an electric mixer, we allow it to rest for 10-20 minutes to allow the chemical components in the putty powder to dissolve. After the putty powder has rested, it should be mixed again before use.
3、Wall repair
We will apply the pre-mixed putty powder to the areas of the wall that need repair using a scraper. If the desired putty layer thickness is significant, we can apply the putty in two to three coats, with each coat approximately 0.5 millimeters thick. After the first coat of putty has dried, we will sand the putty layer smooth. Subsequently, we will apply the second and third coats of putty using the same method. It is important not to apply additional coats of putty before the previous coat has fully dried. The putty applied to the repaired areas of the wall should maintain the original wall's smooth surface.
Two. The correct method for repairing walls with putty powder.
1、Repairing peeling putty powder on walls: Scrape off the loose putty powder.
2. Apply the putty powder to the wall, ensuring a smooth surface. Typically, apply three coats, and after drying, sand to achieve a smooth finish. This step should be performed before applying the emulsion paint. By filling or completely treating the substrate surface, this step eliminates uneven areas and maintains a smooth, even wall surface.
3、The time between applying two coats of putty powder should not be too short. Applying the second coat before the first coat has completely dried can lead to shrinkage and detachment.
Three. important considerations for patching walls with putty powder.
1、When repairing the wall surface with putty powder, it is essential to thoroughly clean any loose putty or debris from the surface before applying the new layer. This will prevent the putty from detaching.
2. Also, when patching the putty, it is crucial to match the color as closely as possible to the original wall surface. This will prevent any noticeable color differences after completion, which could affect the aesthetic appearance.
3. When applying putty, it is not possible to apply a single coat. However, when applying a second coat, it is crucial to ensure that the first coat is completely dry before applying the second. This prevents the putty from detaching.