How to do a good job in wall base treatment? What are the steps of wall base treatment?

Real stone paint is composed of natural colored sand, emulsion and additives, which are mainly used for interior and exterior wall decoration, and the effect is similar to marble.

Real stone paint can generally be sprayed or scraped, the construction process of real stone paint is mainly the exterior wall texture putty powder treatment base, 2 times can survive, and then on the side of the primer, the effect is alkali resistance sealing, and then spray the main material exterior wall real stone paint 2 times, the construction thickness of the real stone paint is 2-3mm, too thin will be the bottom, too thick will increase the cost, so it is generally recommended that the construction thickness of the exterior wall real stone paint is 2-3mm. , and then the last process is to build a Rong cover varnish, the main purpose is to protect the wall against ultraviolet rays and color preservation.

Exterior wall real stone paint base treatment is divided into old wall and new wall, new wall, generally with exterior wall texture putty powder treatment, batch scraping 1-2 times, according to the flatness of the base, if the base is very smooth is generally 1 time, if the flatness of the base layer is not good, sometimes to 3 times, generally in 2 times on it, you can achieve the desired effect; If it is an old wall, it is necessary to treat the old wall first to see if there is a phenomenon of returning alkali and peeling, if there is a need to remove alkali, oxalic acid can generally solve the problem, and then according to the process of the new wall.

The amount of putty powder scraped on the base layer of exterior wall real stone paint is generally about 2 kg, and the amount of exterior wall real stone paint is per square kilogram when the alkali resistant primer is applied, and the amount of exterior wall real stone paint is basically about kilogram per square meter, with a thickness of 2-3mm, and the amount of surface layer spray cover smooth finish paint of exterior wall real stone paint is per square meter.

How to deal with the base wall before the construction of real stone paint?

1. Strength. The strength of the base layer has a lot to do with the type of base and its own quality, usually the strength of the concrete base is the highest, the mortar is second, and the gypsum board is the lowest. Too low base strength can affect the adhesion of the coating.

The qualified base should not be powdered, sandless, hollow, layered, cracked and peeled.

Second, flatness.

The unevenness of the base layer will affect the final decorative effect of the real stone paint. There are four main items for flatness inspection: surface smoothness, vertical yin and yang angles, vertical façade, and square yin and yang angles.

3. Dryness.

The moisture of the base layer comes from the addition of water to the cement, which will bring alkaline substances to the surface and damage the coating. The base layer must be thoroughly dried before being painted. The moisture content must be less than 10%.

Usually for the cement mortar base, in the case of good ventilation, 14 days in summer and 28 days in winter, the moisture content can meet the requirements.

Fourth, pH.

Mortar, lime in concrete, cement contains a large amount of calcium hydroxide, which is very alkaline. The alkalinity of the base layer will affect the adhesion of the coating, and will also cause quality accidents such as coating discoloration, gas layer, whitening, and flowering. The pH of the base layer should be less than 10.

Fifth, the degree of cleanliness.

Remove the slurry, dust, oil, etc. on the surface of the base layer, so that the surface is conducive to the bonding of the coating.

Substrate treatment is the first and basic process of real stone paint coating, which plays a decisive role in the quality of the entire coating. If the base treatment is not in place, quality accidents such as coating peeling, cracking, and blooming will occur.

The treatment of the wall base layer is a necessary part of the decoration of the wall, and the construction process is not the same depending on the situation of the wall. It can be roughly divided into the following types:

First, the new wall construction technology.

1. Use special tools to detect whether the humidity of the wall is up to the standard and whether the pH value of the wall is up to the standard. If the alkalinity of the wall is too high, it can be maintained for 1 month before carrying out other work procedures.

2. If there are hollow drums, cracks and other defects on the surface of the wall, they will be removed from the hollow drum of the wall, and the cracks on the wall surface with putty or cement mortar will be repaired unevenly to ensure that the wall layer is level, to ensure that the wall layer is level, and to ensure that the coating can be uniform and beautiful.

3. Whether there is floating sand or gray sand on the wall, which can be used to shovel sand or gray surface, you can use a scraper or scraper, or you can use a wire brush or bamboo broom to clean the floating sand and gray sand on the surface.

4. If there is sand hole on the wall, or there are traces of plaster and cement mortar on the base layer. You can use a mask, and then polish it with a polished wall machine. If there is a nail head on the wall, it is necessary to wake up the nail head for anti-rust treatment, and then apply wall painting.

Second, the treatment of the base layer of the old wall that has not been painted:

1. The treatment of the old wall base is more complicated than that of the new wall. Now remove the decorations from the old wall, and then clean up the dust, oil, etc. on the old wall. For the cracks on the old wall, it can be repaired with cement mortar, and the wall can be flattened.

2. If the old wall is mildewed, it means that the initial waterproofing project of the wall is not done well. When the wall is renovated, the waterproofing construction of the wall should be carried out first. Use a wire brush or shovel to clean the discoloration and fade paint from the old wall and rinse it with clean water.

After drying, the walls are repaired and polished. In order to ensure the flatness of the wall, it does not affect the secondary construction of the wall.

3. If the old wall paint film is well preserved after painting, then clean the stains on the wall with clean water and directly carry out the wall decoration construction.

Notes:

1. Wall pollution control

Wash the dust with high-pressure water and wash the heavily contaminated areas with a neutral detergent. Rust and alkali are treated with a weak acid solution and rinsed with high-pressure water.

2. Spalling coating:

1) High-pressure water gun scour (

2) Choose an electric shovel or electric wire wheel to clean the local residue.

3) Use an electric wire wheel to clean the 5261-bit part with a large shedding area at the bottom of the coating.

4) Apply an impregnating primer.

3. Paint powder**: clean with a water gun first, check whether there is a product the next day, wash from the beginning, and apply an impregnated sealing primer after drying.

4., hollow drum processing:

Check the size of the empty bucket and make a symbol, but later use a grinding wheel cutter to cut it.

Cut off the hair on the base and remove the dust; Wet the base with clean water, brush a layer of repair mortar, and then repair the mortar in 2 to 3 repair units.

The quality of wall decoration is directly affected by the quality of wall decoration. Although the grassroots treatment is the "lining" of wall decoration, it must not be sloppy in dealing with it! Here are a few steps you can try:

Step 1: A major check-up; The identification method is to scrape the wall with a shovel after the wall is sprinkled with water, and it is difficult to shovel off the cement wall; It is easy to shovel off the "big white putty" with large white powder and glue, which needs to be removed because it is easy to be damp and pulverized and contains formaldehyde.

Step 2: Sealing layer treatment; First of all, remove the hollow drum, soak the white powder layer of the wall with water, and shovel off the wall skin. Second, the wall roller brush interface agent cleans the floating ash and improves the adhesion. Finally, the screeding mortar is used to repair the hollow drum, line groove and hole, and the caulking gypsum is used for groove treatment.

Step 3: Thick screed treatment; The rough wall with good flatness (the flatness of the blank house delivery specification is 3 mm) does not need to be leveled with leveling repair mortar for thick leveling, and can be directly leveled with water-resistant putty or functional ecological putty.

Step 4: Fine screeding treatment; After the thick screed layer is treated, you can scrape the water-resistant putty or other functional ecological putty for fine leveling, and the construction needs to be carried out according to the construction instructions of the putty, especially pay attention to the precautions such as full and uniform stirring, scraping thickness and grinding, etc., to avoid man-made problems caused by improper construction technology. The flatness of the fine screed should be 1 mm after treatment.

Then carry out sanding putty.

Step 5: Brush the primer or base film; If the decorative layer is painted, after sanding the putty and cleaning the floating dust on the surface, you can apply the alkali-resistant primer. The primer can be applied on a roller, which must be even, and after it dries thoroughly (generally 2 to 4 hours), the next step can be carried out to roll the topcoat.

If you choose to stick wallpaper, you need to brush a layer of base film first.

Step 6: Paint or wallpaper; The wall paint is usually applied twice, and each time should be separated by more than 2 to 4 hours (depending on its surface dryness) and allowed to be basically dry. After the second coat is brushed, it takes 1 2 days to completely dry, and before the paint is completely dry, attention should be paid to waterproof, drought-proof, dust-proof, wind-proof, and sun-proof, so as to avoid problems with the paint film.

If you paste wallpaper, after the base film surface is dry, you can paste wallpaper.

Step 7: Acceptance; The wall should be solid, flat, vertical yin and yang corners, no cracks, no holes, uniform color, full paint film, and no traces and bubbles in the wallpaper texture splicing.

Use a special tool to detect the amount of humidity in the wallWhether it meets the standard, and then the pH of the wall is tested. If the alkalinity of the wall is too high, the wall can be cured for 1 month, and then againCarry out other processes of the wall.

The treatment of the base layer of the old wall is more complicated than that of the new wall. Remove the decorations on the old wall first, and then wash the dust and oil stains on the old wall. For the cracks and peeling parts on the old wall, they can be repaired with cement mortar, and the surface of the wall is flattened.

If there is a hollow drum on the surface of the wallCracks and other defects should be removed from the hollow drum on the surface of the wall, and the cracks and unevenness on the surface of the wall should be repaired and smoothed with putty or cement mortarYou can use a shovel or scraper to shovel off the floating sand or lime sand on its surface, or you can use a wire brush or a stiff bamboo broom to clean up the floating sand and lime sand on its surface.

If the wallIf there are traces of sand hole or base plastering on the surface, it can be covered with cement mortar, and then the surface of the wall can be sanded and smoothed with a sander. If there is a nail head on the surface of the wall, the nail head should be treated with anti-rust, and then the wall should be painted.

New walls need to have a sufficient maintenance period. Generally, it needs to be maintained for 1 month, such as low temperature or humid areas in winter, and the maintenance period needs to be appropriately extended to ensure that the humidity of the wall is less than 10%. A special instrument (liquid crystal display dual-probe wall moisture meter) can be used to detect the moisture of the wall.

Wall sand holes, pits. Wall trachoma, pits, such as scaffolding holes, air-conditioning holes, window covers, and pipeline facilities are laid with omissions and defects, which need to be treated with the same materials and construction methods as the base surface of the wall.

When we decorate our walls, we often choose wallpapers, not only because they are ecological, but also because they are simple and convenient to construct. But have you ever thought about the quality of the wallpaper, in fact, this andwall base treatmentThere is also a very close relationship, and the methods of different treatments with substrates are different. Before placing the old house on the wallpaper, there are different requirements for the treatment of the wall.

What to pay attention to in the treatment of wall base layer.

New home décor, if you plan to paste wallpaper, then not Hui Sui needs to paint. Wall base treatmentThe process is the same as that of the surface structure of the matrix wall, that is, the interface agent is usually brushed in the plaster layer, and then the putty is scraped 2-3 times. Then you can carry out other masons, grease and other decorations, and then finish the wallpaper on the wall.

Many people plan to renovate an old house, but after the house is refreshed, it can be painted. At this time, can you place the wallpaper directly on the wall? It depends on the original painting of the walls.

If the paint is stable and does not come off,Wall base treatmentYou can directly brush the base film and wallpaper. Instead, the substrate needs to be removed and remade, i.e. the wall surface is completely removed, the plaster layer is removed, the interface agent is re-brushed and the putty is scraped off.

How to determine the stability of an old house wall? It can be fastened to the wall using a damp towel without dripping. Look at the walls and see if they fall off the next dayWall base treatmentIf not, the wall has good stability.

If the walls of an old house were originally made of plaster, then you have to pay attention to moisture, cracks and rust. First of all, for:Wall base treatment, pay attention to prevent oxidation. If there are screws on the plaster base of the wall, anticorrosive paint should be placed sequentially.

Care should be taken to prevent cracks, and it is better to fill the joints of the gypsum base with latex and gypsum powder to avoid analysis. The plaster breaks due to thermal expansion and contraction, and to prevent cracking, it is also necessary to place a bandage on the seams, gauze or mesh nets. Finally, after polishing and scraping putty, so that the wallpaper can be pasted.

Wall base treatmentThis still needs to pay attention to a lot of problems, if these are not handled well, it will affect the life of Daqing Bizao's family in the future.

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So what should be done with the old wall base? Let's take a look.

Home improvement wall base treatment steps: how to deal with the unpainted base of the old wall ant hole?

1.Use a bamboo broom or wire brush to clean powder, drips, dust from the substrate - rinse with a high-pressure water gun (clean and clean dirt and grime) - repair uneven parts.

2. Peel off the shell or the paint layer to be peeled off, repair it with a 1: cement mortar brush, and brush the surface flat.

What to do with the old wall base? I haven't seen it!

3.After cleaning and cleaning the crack coating, observe the crack size.

The larger part of the crack is cut by a cutter with a depth of centimeters and a width of centimeters, and then the outer walls are approved with special putty with a rough surface.

Home improvement wall base treatment steps:If a small part of the crack has a hollow drum, it must be knocked out completely. Repair the surface with 0:cement mortar.

A small part of the crack is not hollowed out - a special plaster on the façade is used to install the flattened patch——。

4. Moss, mold, algae, leakage, and plugging walls must be plugged and repaired (with special waterproof putty) - high-pressure water gun, broom or wire brush to clean - wash with disinfectant (or bleach) - rinse with water.

What to do with the old wall base? I haven't seen it!

5. Range hood oil, grease removal oil - scrub with 10% caustic soda - tell Wuhui to rinse alkaline water with water.

6. Tile or mosaic surface cleaning and dust removal - tile mosaic special treatment agent batch coating two to three layers of reinforcement - surface smoothing or fleece.

Home improvement wall base treatment steps: how to deal with the old wall base coated with latex paint?

2.What to do with latex painted walls?

1.The old coating is sturdy and slightly powdery, and the high-pressure water gun is used for washing and drying. It can be applied directly to painting. It is recommended to use an oil-permeable penetrating seal primer to strengthen the base layer.

2.After the powder is severely removed with a wire brush, it is rinsed and dried with a high-pressure water gun and then applied with an oil sock base sealing primer.

Today aboutHome improvement wall base treatment steps:

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