What are the specific steps of the old wall reconstruction?

The old wall faces many problems. The nine common problems are: discoloration, dirt, cracking, peeling, bulging, unevenness, mildew, white floc, pulverization, ash falling and water seepage. How to solve these problems or how to avoid them in the second decoration? Here, please refer to the experience that "there are many common problems in the walls of old houses, one by one".

If you choose to paste wallpaper in the renovation of old houses, you don't need to brush latex paint, just polish it with putty powder and smooth it. If you choose to paint old houses, it is quite good to choose Dulux, Nippon and Dufang. In addition to painting and wallpaper, there are other wall decoration methods (such as painting latex paint, wallpaper wallcovering, integrated wallboard, diatom mud, or other new wall decoration materials). Please refer to your experience here. Which of these four wall decoration methods do you prefer? ",the following water elder brother to share with you the old wall reconstruction processing steps! What is explained here is the steps of full shovel wall reconstruction in the reconstruction of old houses. At present, there are four kinds of wall decoration services on the market (polishing and painting, repairing and painting, full batch painting and full shovel painting). According to the basic situation of the wall, ordinary families only do partial decoration of the wall and will also carry out on-site protection.

First, the wall painting steps

wall painting

In the renovation of old houses, if you choose to repaint latex paint, you can carry out wall renovation according to the following steps:

1, water on the wall: It turns out that the wall is covered with water, which saves labor when shoveling.

2. Shovel the wall skin: remove the flooded part of the original wall until the cement mortar wall or putty layer is exposed.

3. Interfacial agent: the wall surface shall be coated with interfacial agent, and all interfacial agents shall be coated evenly.

4. Cracks: Under normal circumstances, cracks are adhered with kraft paper tape and white latex (but there is no guarantee that 100% will not crack again). Here, please refer to the experience "Countermeasures for wall cracking in family decoration"

5, leveling: uneven walls need leveling, commonly used gypsum, uneven difference is not more than 0.5 cm.

6. Sticking: Non-load-bearing walls such as general lightweight walls and thermal insulation walls need to be pasted. Try to choose better wall cloth and white latex. If possible, you can use grid cloth, and the anti-cracking effect will be better.

7. Batch scraping putty: It is best to choose waterproof putty with high particle fineness and hard texture, or add some white latex to the putty to improve the hardness of the putty.

8. Polishing: Try to use fine sandpaper, generally use 400-500 grit sandpaper for soft putty (such as 82 1) and 360-400 grit sandpaper for hard putty (such as wall lining and easy leveling). If the sandpaper is too thick, it will leave a deep sand mark, which cannot be covered with paint.

The polished wall must be thoroughly cleaned to avoid too much dust and affect the adhesion of paint. The concave-convex difference shall not exceed 3mm.

9. Primer: Primer must be brushed evenly to ensure that every part of the wall is brushed. If the wall eats a lot of paint, it is best to add a little more water to the primer to ensure uniform brushing. Don't think that a roller is enough just because it is a primer. The brushing effect of primer will directly affect the effect of topcoat. Use a roller with the same texture as the top coat.

10. Repair: There will be some defects (pits) after the putty is polished, which is generally difficult to see clearly. Draw it once to make it obvious. At this time, it needs to be patched. Pay attention to patching, be sure to polish it flat, and then brush the primer with a little more water to avoid color difference caused by different water consumption from other walls when brushing the topcoat.

1 1, topcoat: Do not add too much water, which will affect the thickness, feel and hardness of the paint film. Try to choose better tools. The hair of the roller should not be too short, but it must be thin, so that the paint film drawn will have a delicate feeling. Pay attention to the corner, the indirect stubble part in each roll and the direction of paint collection. In most cases, using a combination brush or a scrubber to draw a corner will easily cause the texture of the corner to be inconsistent with the whole face, and there will be visual differences. If possible, you can buy an edge roller, then brush the paint with a brush and then use the edge roller to close the corner. Note that the material of the edge-receiving roller should be the same as that of the roller with large brush surface. When brushing a big face, the paint in all places must be collected evenly, not too thick or too thin. Otherwise, there will be inconsistent reflection due to uneven thickness. When painting, there will be a paint collection action after each roll is on the wall, which requires that the paint collection direction of each roll should be the same, otherwise the texture of each roll will be different, the reflection angle will be different, and there will be visual differences. (suggestion: buy a tray before painting, which will be sold in the store. Using a tray can ensure that the paint on the roller is the same every time, so that it will be brushed evenly. )

12, maintenance: latex paint will dry after 4 hours of brushing, but the dried paint film has not reached a certain hardness and needs maintenance. It's simple. Do not scrub or touch the wall for 7- 10 days.

Second, the step of pasting wallpaper on the wall.

Wallpaper on the wall

In the renovation of old houses, if you choose to paste wallpaper, you must first deal with the foundation wall. Here you can refer to the experience "How to solve the common wall problems in the renovation of old houses and wallpaper construction?" ",but the first few steps of wallpaper paste and wall painting are the same, and there is a little difference after dusting and scraping putty again:

1, wall putty.

2. In the past, wallpaper was painted with white latex, but now it is no longer used because of poor environmental protection. Basically, a layer of basement membrane is brushed, because if wallpaper is pasted directly, the adhesion of the adhesive is very strong, and direct pasting may pull off the grassroots of the wall. If you brush a layer of basement membrane first, the basement membrane can seal the wall surface against water and moisture, and increase the adhesion between the wall surface and wallpaper.

3. After brushing the wallpaper basement membrane, just wait for one day to paste the wallpaper. At present, some wallpaper adhesives already contain basement membrane components, so it is not necessary to brush the basement membrane separately. When the putty is dry, you can paste the wallpaper directly with wallpaper glue.

I hope the above experience will be helpful to everyone. If you have any better suggestions, please leave a comment below.