Repainting steps of building corridor

1, wall repair: the house with rough wall or putty layer is required to be flat and firm. No pulverization, sanding, hollowing and falling off. The uneven and pitted surface at the grass-roots level shall be leveled with putty. The angle of Yin and Yang must find the vertical aluminum connection through the elastic ink line and measure the horizontal and vertical uniformity. The last putty should be completely dried before construction.

2, scraping putty: buy putty powder in the finished bag, add water and stir once. 3, wall polishing: after scraping putty, there are always some uneven surfaces. At this time, it needs to be polished by hand and repaired with sandpaper. You can also use a sun lamp to illuminate the middle, which is convenient for checking the flatness. Then use sandpaper to polish and constantly improve.

4. Primer: After the floating dust on the polished putty surface is cleaned, the primer can be brushed. Primer can be brushed once, and it must be uniform. After drying (2-4 hours), the next step can be carried out.

5. Paint surface: Generally, the paint surface needs to be brushed twice, and the interval between each time should be more than 2-4 hours (depending on the surface drying time) until it is basically dry. It takes 1-2 days for the paint to completely dry after the second coating. Before the paint is completely dry, pay attention to waterproof, drought-proof and sun protection to prevent problems with the paint film.

Precautions for painting:

1, putty should be compatible with the coating performance, solid and firm, and shall not be pulverized, peeled or cracked. Use waterproof putty in wet places such as toilets.

2. The coating liquid should be fully stirred. If the viscosity is too high, add water properly; if the viscosity is too low, add thickener.

3. The construction temperature is higher than 10 degrees Celsius. There can't be much dust in the room. It's best to avoid rainy days.