What are the precautions for painting outdoor walls?

Many people are still not clear about wall painting, so what are the reasons for painting outdoor walls and the preventive measures for painting outdoor walls? Let's take a look at it. First, what are the precautions for painting outdoor walls?

1. Pay attention to the weather

in brushing the wall, so as to prevent the weather, such as rain and snow. Remove the mold, oil, fly ash, loose lining, shovel the wall, and then wipe it with coarse sandpaper. If there are loopholes and leaks, please fix them in time.

2, pay attention to fruit green, sky blue and other acidic wall powders

In order to avoid stains on the wall surface, you can completely dry and coat the gray wall of newly brushed paper with a lime outer layer. In addition, it is necessary to pay attention to the problem of neutralization and flooding on the surface of lime wall that has not been painted for more than half a year. Second, how to paint the wall.

1. Check whether the painted wall is firm and flat.

use 2M or more to measure painted walls. If there are cracks and holes in the wall, it is recommended to find a developer or property to redo them. Individual holes can be filled with gypsum.

2. Prepare putty in advance.

after the wall surface is confirmed to be solid and flat, clean it with tools such as steel brush, so as to avoid floating soil and ups and downs as much as possible, roll the concrete interface agent evenly on the wall surface, and blow putty after 2 hours.

3. Waterproof putty

Under normal circumstances, if the wall putty is scraped on both sides, and the flatness is poor, it is necessary to scrape the putty several times in the local area. You can scrape the gypsum for leveling first, and then scrape the putty to cover the background color. At the same time, it is necessary to pay attention to the time interval of scraping the putty for more than 2 hours.

4. Polishing putty

After 2 days of putty, you can use a light bulb with more than 1 watts to close the wall and polish it at night. Pay attention to verify the flatness of the wall.

5. After the primer brush

is ground, clean the surface of putty. The base and brush can be painted once and must be evenly distributed. ? After 3 or 4 hours, you can proceed to the next step.

my summary: the above is my understanding of the reasons for painting outdoor walls. thank you for reading.