Wall treatment is a key but complicated step in family decoration! No matter how well the wall is decorated, it won't help. Summarize the "Ten Steps of Wall Treatment" and share it with you (see the figure below):
The following is a plain text version:
Ten steps of wall treatment-① shovel or not shovel the wall skin (suitable for new or second-hand houses), grind or not grind the wall skin with sandpaper (suitable for second-hand houses) →→ ② brush the wall (what brand, where to buy it and the proportion of water) →→→→→→→→ ③ level the wall with plastered gypsum or wall tiles (flat, vertical and horizontal), and find the angle between yin and yang (straight). Crack treatment and crack prevention treatment) → ⑤ Putty leveling for 2~3 times (divided into water-resistant putty and non-water-resistant putty) →⑤Putty polishing (divided into rough grinding of several mesh sandpaper and fine grinding of several mesh sandpaper) →⑦Wall cleaning (divided into ash sweeping and soot blowing) →⑧Primer painting (divided into alkali-resistant and non-alkali-resistant putty) →⑨Local treatment of pits, protrusions and scratches on the wall.
Are you a little confused after reading these steps? Don't worry, these are equivalent to martial arts cheats, and each martial arts cheats has specific moves that can be disassembled! In this paper, the first step is disassembled-① shovel or not shovel the wall skin (suitable for new or second-hand houses), and polish or not polish the wall surface with sandpaper (suitable for second-hand houses without shovel the wall skin).
Why shovel the wall for decoration?
1, whether to shovel the wall skin, this should start with putty. Putty is a decorative material used to level the wall, and it is an essential product before painting to remove the uneven surface of the painted object. The putty powder used in the house before was not good and the glue was low. After a long time, the glue in the putty will fall off after it expires.
2. The original putty powder of most new houses is not used for living, but for the convenience of the owners to check and accept the houses.
3. Before the developer scraped the putty, the basic treatment was not handled in place, basically it can be said that it was not handled. After a long time, it is detached from cement powder, just like putty falling off and bulging. Putty treatment is the basic treatment of wall surface. If the grass-roots level is not handled well, it will bury many hidden dangers in our future life, such as moldy walls, cracked walls, large areas of walls falling off, and the wall skin directly separating from the original cement base. If the wall base is not handled well, harmful gases such as radon and ammonia in the cement wall will also be directly emitted to our room, which will have a serious impact on our physical and mental health.
4. Early grass-roots treatment is not in place. When the house has passed a heating season or is full of people, the building sinks, resulting in cracks in the house.
Shovel wall in new house decoration is not only for beauty, but more importantly, to ensure the quality of later decoration.
Let's share with you the knowledge about shoveling wall skin in the renovation of new houses. Let's take a look at it with friends who are ready to decorate.
How much is a square meter for decorating and shoveling wall skin?
3- 10 yuan per square meter. (Price source network, for reference only)
What tools should I use to decorate the shovel wall?
1. Power tools: electric wall shovel.
Electric wall shovels are electric, and the wall shovels sold in the general market are of high quality. The design of electric wall shovel is scientific, which is convenient for the public to use, and the processing is also very fine, which makes it easier for people to carry out various operations conveniently, and the power of shoveling the wall is also great. The high rotating speed obviously improves the working speed.
2. Hand tools: paint spatula.
You can shovel the wall skin with a paint knife. Wet the wall skin with water with a roller brush first, and then shovel the original latex paint and putty layer with a paint knife. If you shovel the paint layer, you have to prepare an electric hammer and a hammer chisel.
What are the ways to decorate the shovel wall?
Shovel the wall skin and pour water on the original wall surface first. The roller is covered with water, and it is best to immerse it all in water, and the wall surface is soaked in water. Put the roller where you want to shovel and continue rolling. After ten minutes, shovel off the wet place with a shovel. Remember to roll gypsum for leveling after shoveling, but if you want to protect the environment, you can suggest leveling with gypsum or try to avoid using chemical glue in a large area, which can eliminate more than 60% of the pollution sources in the decoration. Although the price is higher than the usual formaldehyde, health is a good guarantee. Scrape the plaster with putty once and twice. If you use waterproof putty on the wall skin, you may need to grind it slowly with a grinder. It is said that chemical agents can be used to remove the wall skin, but this method is easy to damage the wall, corrosive, unsafe and environmentally friendly, and may also cause harm to the human body.
What should I pay attention to when decorating the shovel wall skin?
To shovel the wall, you must first put plaster on the wall. Gypsum is strictly a kind of mortar, and sometimes it is painted on the inner wall, with a smooth surface and looks very attractive. However, the water resistance and alkali resistance are not good, and it is easy to pulverize and has poor durability. Putty: Putty is a very important substrate. Inferior putty lacks viscosity and poor water resistance, which will make the paint film peel off and fall off. Putty can't be brushed until it is completely dry. Spray some water on the dry putty to see if it is softened or crushed. Latex paint wall: latex paint with loose base. Draw a cross scratch on the latex paint wall, stick a piece of adhesive tape on the scratch, and then tear it off quickly. If the tape is torn off from the wall, it means that the adhesion of the paint film is not good and the old wall must be removed.
How far did you shovel the wall? Is there a difference between different houses?
When decorating the shovel wall, it is necessary to distinguish the following situations:
First, if there is no blistering, peeling and hollowing on the wall, it can be used as a precondition for not eradicating.
Second, at the same time, what was the original wall of the house? If it is also latex paint, it can be eradicated, but if it is the earliest white road, it must be eradicated.
Thirdly, whether it is rolling brush or spraying, it has a great influence on the original paint. It is recommended to cover the wall with a wet cloth dipped in water for about two minutes. If the wall is still strong, there is no problem, you can brush it directly. If it bubbles, it is likely that the same problem will occur during spraying. In this case, a glue brush is recommended.
Fourth, the purpose of shoveling the wall is to eradicate the hidden dangers on the wall, lay the foundation for latex paint, pour water on the wall yourself, and try it with a gray knife. If it is easy to shovel, it must be shoveled; If you can't shovel for a long time, don't worry that it will be easy to come down later.
For different types of houses, there are different sayings about shoveling wall skin:
1. Just after shoveling the new wall and seeing the cement, the old wall will see the brick.
2, if the surface is paint, need to remove more, almost exposed. If it is latex paint, you can check the quality of the original putty. If it is knocked with a hammer, it needs to be completely removed when it falls. If not, look at the flatness of the wall. If possible, polish the surface with sandpaper and repaint it.
3. Shovel the cement, that is, shovel the putty on the surface.
Shovel the wall skin, its purpose is to lay the foundation for the upcoming decoration. Therefore, which wall is the easiest to combine the new paint with the original wall, then that is the degree to be achieved by shoveling the wall skin. Therefore, people in the industry express it in professional language: shovel off the original putty.
How to deal with the wall after shoveling off the wall skin?
The light wall should be leveled with gypsum after anti-crack treatment (nylon mesh cloth or kraft paper cloth), and the thickness of gypsum should not exceed 8 mm. Glue must be added, and the ratio (gypsum powder+white latex+water is about1:1) should be mastered, and leveling and pasting should be carried out at the same time.
After leveling, brush the surface wall lining (waterproof putty layer) for about 2-3 times. It is recommended to use colored walls.
In the process of sandpaper grinding and putty batch scraping, it is inevitable that there will be some small defects, such as grafting at the junction of putty, traces left by local batch scraping being too thin or too thick, and pinholes caused by water absorption on the wall. These defects can also be solved by wall polishing.
Paint, one primer, two topcoats (ordinary commercial housing, the construction area multiplied by 2.2, is probably the area of latex paint. Generally speaking, the latex paint packaged in 18L can be brushed about140m2, that packaged in 15L can be brushed about100m2, and that packaged in 5L can be brushed about 40m2).
Generally speaking, it takes only two steps to shovel the wall: first wet the wall, and then shovel it off with a shovel.
1, the newly bought roller is covered with water, so it's better to immerse it all in water.
2. Place the roller where it is to be shoveled, and continue rolling. It is said that it needs to be rolled twice to make the wall completely wet.
3. shovel the wet place with a shovel.
But if the wall skin is made of waterproof putty, it may need to be polished slowly with a grinder.
It is said that chemical agents can be used to remove the wall skin, but this method is easy to damage the wall, corrosive, unsafe and environmentally friendly, and may also cause harm to the human body.
When shoveling the wall skin, you need to pay attention to the following items:
1, sprinkling water to wet the wall surface should not be too much, otherwise it will easily cause water accumulation on the ground.
2. After the wall is wet, wait for 10 minutes before shoveling, so as not to shovel out the putty that is too wet to clean.
3. Don't use too much force when shoveling, and use clever force when encountering uneven places to avoid damaging tools.
4. When you encounter soft walls when shoveling the balcony, you can use a bricklayer's gray shovel instead.
5, the corner is often putty thick, water is not easy to soak, and it needs to be wetted many times;
6, conditional to protect the doors and windows, good cleaning in the future.