In the decoration process, dealing with the wall of the rough house is a basic and important work, especially the color difference in the wall scraping putty and its later repair. Chromatic aberration not only affects the aesthetics of the decoration, but may also reflect the quality of construction. This article will explain in detail the causes of color difference, preventive measures, and repair methods.
First, the cause of chromatic aberration
1. The quality of putty powder: There may be subtle color differences between different batches of putty powder, especially after extensive use of the wall.
2. Construction skills: The thickness of the putty is different during construction, or the speed of putty drying is different, which will also lead to the problem of color difference.
3. Improper handling at the grassroots levelIf the base layer of the wall is unevenly treated, the water absorption rate is high in some places, and the water absorption rate is low in some places, and the color difference will be formed after scraping the putty.
4. Wall humidity: The humidity of the construction environment is too high or the wall is damp, and the putty is also prone to color difference after drying.
Second, the precautionary measures of color difference
1. Choose high-quality putty powderWhen buying putty powder, try to choose products with good brand and reputation, and try to ensure that the same batch of putty powder is used.
2. Pre-construction base treatmentBefore construction, the wall should be thoroughly cleaned to ensure that the wall is dry, smooth, free of dust and oil, and a layer of closed primer can be appropriately brushed for the wall with greater water absorption.
3. Control the construction environment: The humidity and temperature in the room should be controlled during construction, and the construction should be avoided in an excessively humid environment.
4. Unified construction standards: During the construction process, the thickness of the putty should be kept consistent, the drying time should be sufficient, and repeated application should be avoided as much as possible.
3. Repair method of color difference
1. Local repair: If the color difference range is not large, you can sanding it locally where the color difference is severe, and then re-apply the putty to try to make it consistent with the color of the surrounding wall.
2. Overall painting: For the case that the color difference is obvious and widely distributed, you can choose to brush the latex paint close to the color of the wall as a whole after the putty layer is dry, so as to reduce the visual impact caused by the color difference.
3. Use toning putty: There are putty on the market that can be toned, which can be adjusted according to the specific color of the wall to achieve the closest color, so as to repair the color difference.
4. Handled by professionals: If the repair effect is not good, it is recommended to ask a professional renovation team to evaluate and repair to ensure the repair effect.
Fourth, how to scrape putty in the embryo room?
1. Wall foundation treatment.
Clean the walls. First of all, the wall needs to be thoroughly cleaned, including removing dust, oil stains, and old paint. This step is very important, because a clean wall is conducive to a better combination of putty and wall covering.
Repair potholes. Use cement mortar or a special filler to fill large holes in the wall. This step ensures the basic leveling of the wall and lays the foundation for subsequent putty work.
Sanding the walls. For rougher walls, sandpaper can be used to sand to eliminate uneven walls.
Upper interface agent. With the wall dry, apply the surface agent. The interface agent can enhance the adhesion of the wall to the putty and prevent it from falling off.
2. Choose the right putty.
The putty powder on the market can be roughly divided into two types: white cement putty and polymer putty. For wall coverings, polymer putty is recommended because it not only has good adhesion and flexibility, but also provides better moisture resistance.
3. Prepare wall putty.
According to the instructions for the putty powder, mix the putty powder with an appropriate amount of water and use a blender to stir until there are no particles and a consistency suitable for application.
Scrape putty. 
4. Scrape putty for the first time.
Tool preparation. Have a wide spatula and corner knife ready (for working on corners).
Operational essentials. Scrape the putty from the bottom to the top, from the inside out, with even strength, and try to keep the putty layer uniform and flat.
Precautions. Make sure that the thickness of the putty is not too thick each time to avoid uneven drying.
Pay attention to the treatment of the corners to ensure that the corners are flat and neat.
5. Grinding and repairing.
After the first coat of putty has dried, use fine sandpaper to lightly sand the wall to remove small particles and unevenness on the surface. Inspect the wall and use putty to correct any depressions or irregularities that are still there.
6. Scrape putty for the second time.
After the wall repair part is dry, scrape the putty for the second time and repeat the operation of the fourth step. The main purpose of this putty scraping is to further level the wall and fill in the small defects that may be left over from the first pass.
7. The final polishing of the wall.
Wait for the second putty to dry completely before the final sanding job. This time, more attention was paid to detail to ensure that the wall was extremely smooth.
8. Cleaning and inspection.
Use a damp cloth to clean the dust off the wall, then carefully check the flatness and fineness of the wall to make sure there are no missed blemishes.
Although the color difference problem after scraping putty on the wall affects the appearance, it can still be effectively solved through scientific and reasonable methods. Preparing for the decoration, choosing the right materials, controlling the construction environment, and paying attention to details during the construction process are of great help to prevent color difference. If there is already a color difference, there is no need to worry too much, through local repair or overall treatment, etc., the ideal decoration effect can also be achieved. Although scraping putty is a more tedious process, every detail is related to the final decoration effect, so you need to be patient and meticulous when performing each step.