Knowledge of wall putty scraping

batch scraping putty on the top surface of the wall is an essential process to ensure the wall foundation project. The following small series will discuss and explain the knowledge of wall putty scraping. Let's take a look at it.

1. Preparation for putty scraping

1. The first thing to do is product preparation. Generally, the main materials needed for wall painting are cement mortar, interface agent and putty powder. You need to prepare tools first, and then prepare them according to the material description and the ratio. And prepare all the required materials, and don't forget to check whether the tools and instruments used for painting are complete. Common and commonly used tools for painting wall putty include color separation paper, kraft paper, roller, brush, putty knife and sandpaper.

2. Cleaning the wall surface: remove the loose parts on the top surface of the wall, seal them with cement mortar, shovel the residual mortar, and then sweep the wall surface.

3. Treatment of original cracks: cut the cracks in the tea brick with a knife, make the color as deep as possible, and then fill them with caulking gypsum. Pay attention to be able to fill it firmly and evenly. Then paste the cracks with kraft paper, dry them, and then scrape putty or do other technological treatment.

second, the construction process steps of putty scraping

1. First of all, we should choose good quality putty, which is a prerequisite for scraping putty well.

2. Know the ratio of putty to water, and then mix it evenly.

3. Clean all the base layers of the wall. If there will be cracks or missing corners, we will repair them with gypsum powder, and paste them with cloth or kraft paper.

4. If putty is scraped, it is usually scraped three times. During construction, remember to wait until the natural dryness before scraping the putty for the second time.

5. It is best to control the width of putty to about 2mm, and it is best not to be lower than this size specification.

6. If the weather is cold and the putty is scraped, it needs to be maintained. If it is not completely dry, it is best to close all the windows, in order to prevent the dry wind from blowing the putty dry and cracking.

7. For light polishing, the angle of yin and yang must be vertical and horizontal.

8. When scraping putty, if you find any protruding sand particles or other sundries, you should dispose of them in time.

Third, the construction skills of putty scraping

1. Pay attention to the ratio of water and putty powder.

2. scraping putty for the first time does not require light but leveling.

3. Generally, it is required to scrape the putty on the wall for three times, but every time the putty is scraped, it is required to be dried before the next brushing.

4. When scraping putty, we should avoid the direct blowing of cold air, which seems to blow dry the wall, but it actually locks the moisture in the wall. If the next operation is carried out at this moment, when heating is carried out in winter, the original dry wall materials will begin to evaporate and appear "dry crack".

batch scraping putty on the wall surface makes the wall surface smooth, which provides a good foundation for ensuring product quality.