How to deal with the wall before the wallpaper, how to deal with the wall before the wallpaper

Wall Treatment Steps:

1.Brush putty with base film: the first thing to do is to deal with the base layer.

Since the wall where the wallpaper is posted must be dry and tidy, it is best to choose water-resistant putty when brushing putty, which can make the wallpaper not easy to peel, so as to increase the service life. After that, you can brush the base film, of course, the base film is not necessary, you can choose according to the actual situation after brushing the putty.

2.Dealing with the flatness of the wall: the second step is the problem of leveling.

The flatness of the wall directly determines whether your wallpaper can be pasted well, so we have to be extra careful in this step. According to everyone's benchmark, the error of the flatness of the wall can not exceed 3mm, otherwise the wall wallpaper will not only not be able to be properly parquet, but also remember that it is easy to peel and warp.

3.Test the water absorption: the wall with wallpaper must have a good water absorption.

The test method is actually very simple, we can pour a little water on the wall, if the water quickly forms beads and stays, then the water absorption rate of the wall is too low, which will make the wallpaper not stick firmly, and then warping, peeling and other phenomena occur. Attention to detail:

In principle, the wall surface can be pasted when it is flat and dry.

2.Cement and brick wallpaper: it is relatively flat, flattened with putty, and brushed with a thin layer of varnish can be pasted with wallpaper.

3.Wallpaper on plasterboard, plywood and blockboard: there are seams, which need to be patched before leveling.

Putty for joint repair: as long as more white glue (vinyl acetate resin) is added, the seam will be firm and will not crack.

Putty for leveling: just add a small amount of white glue for sanding.

Gypsum powder and white glue replace putty for leveling, which can speed up drying and shorten construction time.

Wallpaper on the wall: that is, if there is an unstable powder on the wall, it should be sanded to remove, leveled, and brushed with the base film before the wallpaper can be pasted.

Wallpaper on the bare wall: that is, the wall is very smooth (such as the painted wall), not easy to absorb glue, not easy to dry, and the adhesion force will decrease, so it is necessary to sandwork before sticking wallpaper.

6.Paint wallpaper: Paint wall is very suitable for wallpaper, but you need to do a good job of sanding and then painting the wallpaper base film before construction. The wall pretreatment of wallpaper is actually about the same as the wall pretreatment of brushing.

Before construction, the wall should be brushed with base film. The purpose of brushing the base film is to solidify and protect the surface of the putty, and it can also strengthen the waterproof and mildew-proof function of the bottom of the wall, but it can only be painted when the putty is completely dry. (The base film is an environmentally friendly product, easy to dry, and an alternative to traditional varnishes).

8.Any wallpaper should not be soaked in water.

The requirements for wallpaper on the wall are mainly as follows:

Strong. This is basically a requirement for all wall decorations for the base layer of the wall. It is best to make water-resistant putty for the base layer.

Water-resistant putty is resistant to water vapor erosion, has a long life, is strong and durable, and can ensure that the wallpaper will not cause peeling due to the base layer. The base film of the wallpaper is mainly for the putty is not good and gradually appears (such as the big white, old powder wall), but now it seems that no matter how bad the putty is, the base film must be brushed, just like the standard construction process, it is estimated that there is money to be made, hehe. In fact, the base film is not a particularly good thing, many people buy the highest pure paper wallpaper, one of the points is that they fancy the breathability of the pure paper wallpaper, but they don't know what respirability is in vain after brushing the base film, because the base film is closed, the wall can no longer breathe ......However, if the material used in the base layer is not very good, it is still a safety point for brushing the base film!

Make level. Sticking wallpaper, theoretically the requirements for the flatness error of the wall are about 3 mm (what is the flatness error, how to measure it, I made an animation, there is it in the store). If the error exceeds 3 mm, it is easy to cause inability to parquet (for wallpaper that needs parquet), and it is easy to cause peeling and warping.

In actual operation, there are many errors of more than 3 mm, but the effect is ......

It's not all bad, each has its own merits! However, I personally recommend that it is best to do a good job of flatness!

The water absorption rate of the wall. It can also be said to be the degree of dryness of the wall. If the wall is too dry, the wallpaper will lose water too quickly after pasting the adhesive on the wall, resulting in a decrease in the bonding ability, which will easily cause peeling and edge warping.

Generally, there is no such problem for the wall surface of the base film. If you don't make a base film, it's best to roll a little water on the wall first to see if the water is quickly "eaten" by the wall, if so, then use the water roller to go through the wall first (almost all wall materials are afraid of losing water too quickly, so it is important to ensure the wetting of the wall as much as possible).

Brush the putty 1-2 times.

Ensure that the wall surface is smooth, no potholes and no depressions.

After that, it's time to lay the wallpaper.

1. Treat the wall.

The base surface of the wallpaper must be clean and flat, and the treatment method is also a batch of putty, and then polishing, polishing the standard is the same as preparing to brush latex paint. Two days before laying wallpaper, paint the wallpaper base film or varnish on the wall (nitro paint or alkyd paint is fine, there is no need to use polyester paint), pay attention to some paint spots splashing on the wall when brushing the top; When painting the wall, the brush may also bring up some brushing, and it is best to simply polish the base film after brushing.

2. Select excipients.

In the pasting wallpaper is the choice of auxiliary materials is very important, in addition to ensuring its quality is no problem, but also to ensure the environmental performance of auxiliary materials, can not cause damage to the human body. Before pasting wallpaper, what is brushed on the wall is not a light varnish (varnish), but a colorless and odorless base film; The wallpaper adhesive is no longer wallpaper glue and white latex, but wallpaper glue is directly mixed with water; This ensures that there is no smell in the room where the wallpaper is being laid. Both the varnish and the base film can play a role in sealing the wall, waterproof and moisture-proof, but in contrast, the varnish has a light taste, while the base film is colorless and odorless, which is more environmentally friendly.

The wallpaper glue used in home decoration is extracted from potatoes and glutinous rice, which is relatively healthy and safe due to its natural properties.

3. Calculate the dosage.

On the basis of ensuring the quality and safety of wall stickers, we must also learn how to reduce the loss of wallpaper and save costs. The general estimate is to calculate the maximum usable area of the room floor. When calculating the dosage, it is necessary to understand the specifications of the wallpaper and remove the loss of the flowers.

In practice, the loss of edges and corners is unavoidable. Generally, the loss of wallpaper is relatively high in many materials, and the loss rate is generally about 15%. At the same time, the wallpaper loss rate will also vary depending on the house type.

In addition, because of the different types of wallpaper, there are certain differences in the consumption rate. Wallpaper can be divided into plain color, floral flowers, large flowers, etc. according to the pattern type. When paving, plain wallpaper does not need to be on the flower, so the loss rate is low, while the broken flower and large flower need to be on the flower, and the larger the pattern, the greater the loss.

In contrast, vertically arranged patterns are also less utilized than horizontally arranged patterns. The calculation of wallpaper, due to the complexity of the wall, the indefinite shape of the wallpaper, in general, can not be calculated accurately in advance, there will always be redundant or ** situation. Therefore, it is necessary to find more experienced merchants and conduct transactions to prevent the emergence of problems such as high loss rate of flowers.

4. Cut the wallpaper.

Paper cutting is the most important part of wallpaper paste, there are two ways to cut paper, one is the overlapping cutting method, overlapping the wallpaper on the ground, the good flower, a knife cut, and then paste, so that the construction is simple, the flower is accurate. A kind of seam method, is to measure the height of the wall from the top to the bottom of the skirting, the cutting size of the wallpaper is a few centimeters longer than the actual size, and the cut paper is numbered, pasted in order, and the flower is from the top when pasting. It is necessary to have a wallpaper on the flower puzzle, although this method avoids a certain amount of waste, but the construction is a little more difficult.

The wall treatment before sticking wallpaper, a simple and clear tutorial, you can understand it at a glance!

For different walls, the treatment methods are different, such as wood base surface, gypsum board surface, old wall, rough room wall, concrete and plastering surface, etc., different wall treatment methods are different, the following is a detailed introduction to the treatment methods of each wall.

First, the treatment of the surface of the wood base:

1.The moisture content of the wood base should not be more than 12%.

2.The surface should be smooth and free of dust, oil and other dirt.

3.Brush it thinly with paint to prevent the wood fibers from swelling in water.

4.There is a nail cap on the surface of the wood, and the nail cap is sunk in the wooden surface and the anti-rust paint is pointed.

5.Fill the seams with putty, prepare putty with latex and water after drying, and scrape 1-2 times.

6.Smooth with sandpaper and brush the base film on the surface.

Note: For smooth, flat, absorbent wood surfaces, you can apply wallpaper by brushing a thin varnish on the surface.

Second, the treatment of gypsum board surface:

1.Point the screw caps with anti-rust paint to prevent rust.

2.Adjust the plaster with water with white latex, and fill the seams and nail holes.

3.Once dry, apply a bandage to the seams.

4.Scrape the putty 2-3 times, polish it smooth and flat after drying, and the yin and yang angles are straight.

5.Brush the base film again.

3. Treatment of old walls:

1.Powdered old walls cannot be wallpapered directly on the surface.

2.Sprinkle water on its surface, and then use a shovel to remove the paint layer and the pulverized layer.

3.Remove the squevel and brush with a primer or varnish.

4.Use plaster or putty to level the wall (for walls with large cracks, apply a layer of cloth before scraping putty).

5.Brush the base film after sanding smooth and flat.

Note: If you can't shovel the wall, you can use a wallpaper knife to cut small squares shaped like spider webs on the wall, the deeper the scratches, the better, and the smaller the squares, the better.

Fourth, the treatment of the embryo room:

1.The newly built embryo room is mostly scraped flat with waterproof putty, and the base structure is relatively strong, so there is no need to eradicate it, and the yin and yang corners can be straightened, polished, and brushed with the base film.

2.In some southern areas, the rough room is scraped with white cement, and this base layer cannot be directly pasted with velvet fiber wallpaper and metal wallpaper, and it can only be pasted after scraping putty.

5. Treatment of concrete and plastering surface:

1.The moisture content of the base layer of the wall should not be more than 8%.

2.The base layer is firm, there shall be no panalkali, hollowing, loose problems, panalkali parts with 9% dilute acetic acid aqueous solution for neutralization, and then rinse with water.

3.Holes and cracks should be scraped with plaster (if the cracks are too large, a white cloth must be applied first).

4.Scrape the putty 2-3 times and dry it and then polish it smooth.

5.Brush the base film again.

1. How to deal with the wall before pasting wallpaper:

1. Before pasting wallpaper, the cement wall must be cleaned, and the wall must be controlled, its flatness, the wall should be smoothed first, and then some dust after the smoothing should be cleaned to ensure that the wall does not have any grease and dust, if there is a gap, it must be done to fill the gap, if there is a concave place, you can use a shovel to flatten it, only the flat wall, in the final wallpaper will not fall off.

2. If the wall at home has been whitewashed by us, we only need to ensure its flatness and no dust can be directly pasted with wallpaper, if the wall at home is not whitewashed, or the cement wall, then it is very likely to be through the bottom after pasting, at this time the color of the wallpaper will appear color difference, pasted at home will be very ugly, it is recommended that you paint the wall of your home white before pasting wallpaper, including some small places, such as the socket mouth and the gaps in the corners can not be ignored.

3. After the wall is cleaned, it is necessary to make a layer of wallpaper base film on the wall before pasting the wallpaper, which can prevent the wall from becoming moldy and blackened or falling off directly in a humid environment.

Second, how to paste wallpaper.

When we paste wallpaper, we must first do basic treatment on the wall, such as cleaning and smoothing, to ensure that the wall is flat, and then we carry out base film treatment, brush a layer of base film on the wall, and finally apply wallpaper glue on the back of the wallpaper.

Wallpaper is a more common wall decoration material, but in order to create a warm and comfortable home environment, the wall needs to be treated in the early stage to avoid improper treatment will have a great impact on the later process.

Wall treatment before wallpapering:

1.The cement wall must be smooth, and special attention should be paid to this link from the masonry to the site. Be sure to tell the masons that the walls should be smoothed, especially the corners, and there should be no bulging cement or vacant parts.

Be sure to shovel. Because when pasting wallpaper, if there is a protruding wall, then when pasting wallpaper, the wallpaper and the wall cannot be glued together, which is easy to cause the subsequent wallpaper to fall off.

2.The cement wall needs to be whitewashed, and the cement wall is not suitable for direct wallpaper, because some wallpaper is not dark in color. It would look ugly.

Therefore, the walls need to be painted white first. Including some small places, such as the socket opening, the back of the wall seams and patches, should be painted white in advance.

3.It is best to brush a layer of wallpaper base film on the wall before pasting wallpaper, which can prevent the moisture, moisture and alkaline substances on the wall from extravasation, so as to protect the wallpaper and avoid the occurrence of mold and blackening of the wallpaper.

4.The treatment of the wood base wall, some families may paste wallpaper on the wardrobe side to achieve the effect of color uniformity, and the wood base wallpaper needs to ensure that the wall is free of dust and gaps, such as rivets and other protruding substances, because the nail cap is sunk in the wooden surface to ensure the smoothness of the surface. And the wood material needs to be kept dry and not have too much moisture.

5.The wall surface that is often damp is not suitable for wallpaper, for example, the house on the first floor, if there is no overhead floor, it will often be damp, and such a wall is not suitable for wallpaper. If the wall is damp, the wallpaper will easily become moldy.

Precautions: The craftsmanship of the wallpaper master is also very important, otherwise the pattern is asymmetrical and there are gaps in the paste, which will not look good.