Decoration, in many places can not be separated from the wallpaper, it has a strong decorative effect, but also for the family to create a healthy, comfortable and warm living environment. After paving the wallpaper on the bare wall, the entire room is dazzling and beautiful.
Before wallpaper paving, buy wallpaper is an essential link, so here we should teach you a few things you should pay attention to when purchasing wallpaper:
One: Calculate wallpaper usage
Method:
1. Coarse calculation: The area of ​​the room *3/the area of ​​each roll of wallpaper = the number of rolls.
2. For wallpapers that do not use flowers, as you can tell from the above, measure the perimeter of the house and multiply it by the height. Calculate the area of ​​the wall directly and divide it by the area of ​​each roll of wallpaper to know how many rolls you want.
3, there is a flower wallpaper, it is best: how many meters of the perimeter is divided directly by 1.5 meters (because the general wallpaper is 0.53 times 10 meters, 2.8 wall count loss can only be posted 3, is 0.5*3 =1.5 meters)
Two: The choice of wallpaper material
There are many kinds of wallpapers, but only two are really used: PVC wallpaper, pure pulp wallpaper.
Pure pulp wallpaper is not polluted, breathable, and has no whiplash. However, the requirements for walls are relatively high. This is because "pure pulp" products will expand slightly after adding water, and will shrink slightly after drying. For poor quality walls, it is easy to stick delamination (skin).
The wallpaper of PVC material, by contrast, is less strict with the requirements of the wall. Any high-quality product also has corresponding requirements for its use environment, in order to exert the true value of the product.
Three: wallpaper selection
1. Smell: Taking a new wallpaper sample as an example, a good wallpaper does not have any odor. At best, it only has the taste of fresh wood pulp. Conversely, the heavier the taste of plastic and printing ink, the lower the material and grade of the wallpaper.
2. Burning: High-grade green wallpaper has no burning odor and no smoke, ash is gray powder, poor quality wallpaper has blue smoke and burned ash is black, wallpaper containing chemical organic material is black smoke, there is very Strong odor, black block after burning;
3. Rub: Wipe it with a damp cloth and observe whether the surface of the wallpaper is discolored. Is it suitable for cleaning and cleaning in the future?
4. Touch: Pulp wallpaper feels slightly warm and astringent, PVC wallpaper is slightly hard and cold, the surface is smooth, plastic sense is obvious;
5. Tear: inferior wallpaper layering is obvious, PVC wallpaper surface is flexible, good wallpaper no obvious layering, pure paper wallpaper surface material;
6. Look: Good wallpapers have soft colors, clear textures, and dark and light shades that are too uniform, with no color difference in the same color.
Wallpaper laying construction sequence introduction:
Grassroots processing → vertical line → paper cutting → stuffy water → brush glue → paper wall → smash the big surface → wipe the plastic surface
Grassroots treatment articles:
Grassroots treatment: Grassroots treatment is the key to directly affect the decorative effect of the wall, and it should do a good job of processing. The general requirements for various types of walls are: flatness, cleanliness, dryness, uniform color, no voids, uneven defects.
One: Putty
1〠Preparation before scraping
Wall inspection:
Cement wall: Check whether the cement wall surface that needs to be painted in the rough room is solid and flat. If the plastering layer of the wall is not strong enough or there are large cracks and holes, it is recommended to complain to the developer or property and ask them to redo. Individual holes are repaired by themselves and can be filled with plaster or mortar.
Putty Wall: Be sure to check whether the wall putty is a qualified waterproof putty, if not, you must shovel off the red water putty. In addition, other wall conditions are considered equivalent treatment of cement walls.
Tip: Newly-developed cement walls (such as the developer's redo plastering) must wait until the cement's 28-day curing period has passed before it can be putty. Otherwise, it is easy to see putty bubbles and insufficient strength.
Wall treatment:
Make sure the wall is solid and flat. Use a steel brush or other tool to clean the wall so that the cement wall is free of floating soil and floating. Roll over the concrete interface agent on the wall and try to make it uniform. When it is dry (usually more than 2 hours), it can be putty.
Explanation: Interfacial agent: It is a milky white liquid. Its function is to seal the base layer and prevent putty from causing problems due to loose cement walls, floating soil, or overdrying. Its surface is more suitable for putty adhesion than cement wall surface.
2, putty child:
The smoothness of the wall surface should be measured before the putty is used (using a measuring rule of 2 m or more) to determine the method for scraping the putty. The general wall scrape 2 putty can, can both level, but also cover the background. Poor flatness requires a few more scrapes in the area. If the flatness is extremely poor and the wall is steeply sloping, consider scraping the plaster first to level it, and then scrape it. The scraping time should be more than 2 hours (after surface drying).
3, grinding
Polish putty with sandpaper. After the putty is completely on strength (5-7 days), it becomes very solid, and it will become extremely difficult to polish it again. Therefore, it is recommended to start putty grinding 1-2 days after scraping the putty. Polishing Optional At night, use an electric bulb of 200 watts or more close to the wall lighting, while grinding to see the flatness.
Explain: What is putty?
Putty is the wall leveling material, mainly refers to the wall surface leveling material. Classified according to use environment: Interior wall putty and exterior putty, according to the physical characteristics of the classification of powder and paste, according to the functional classification of non-water putty, water putty, flexible putty and elastic putty.
Two: brushing primer
Primer: It is used to form a protective film between the wall and the wallpaper. It can not only protect the wall surface, but also prevent water, salt, and alkali from penetrating the corrosion of the wallpaper and effectively protect the wallpaper material from the erosion of the mold.
1, preparation before painting primer
During the process of paving, it was found that the emptying, detachment, holes, etc. of the wall needed to be repaired with mortar in time, and the loose lacquer or pulp surface as well as the sand and bulge of the wall were removed, repaired and filled, and then sandpaper or The utility knife is flat.
prompt:
If there is loose powder or dust on the wall, it should be removed by sanding. A wall that is too smooth is not easy to absorb glue, then the force will drop, and it must be sanded before wallpapering.
2, brushing primer
Brushing primer: Apply a base film or varnish to the surface of the wall with a roller. Thin and uniform is required. The reason is to reduce the occurrence of paper squashing due to inhomogeneities. Generally, after all primers are applied for 1-2 days, the primer is allowed to dry and the wallpaper can be applied.
prompt:
(1) Varnish is generally a transparent, non-coloring material of a class of coatings. The main components are resins and solvents or resins, oils and solvents. After being applied to the surface of the wall, it has the function of curing and protecting the surface of the putty, as well as enhancing the waterproof, anti-mold and anti-alkali functions of the wallpaper.
(2) Base film can be used instead of varnish as a primer to brush the base surface.
Explanation: Base film is a kind of primer material used for paving wallpapers, and its effect is better than general primer materials. The function of the base film: The purpose of the base film is to cure and protect the surface of the putty, and it can also strengthen the waterproof and anti-mildew function of the bottom of the wall, but it must be completely dry before it can be painted. (The base film is an enveloping product that is easy to dry and is a substitute for traditional varnish).
Drawing vertical lines:
Wall vertical line: Paving wallpaper, the paper must be vertical, in order to make the pattern, pattern, vertical and horizontal consistency.
Draw lines: Draw the vertical lines after the primer is dry. Starting line position from the wall of the beginning of the angle, less than 1 ~ 2cm wallpaper is appropriate. Use a quasi-centre hammer to measure the vertical reference line, and then use the marker to draw a vertical line along the wall of the corresponding place.
Explanation: Quasi-centred hammer? The quasi-centre hammer is a tool used to measure objects (pavement wallpaper) horizontally and perpendicularly to the wall.
Paper articles:
Paper cutting: This process is very important and directly affects the quality of the wall paste.
Take a roll of wallpaper and check the pattern, pattern, and direction. After determining which direction is facing upwards, use the top of the kickboard floor as a starting point, measure the height of the wall with a tape measure, and then spread the wallpaper on the table to spread the glue. With the pattern facing downwards, after measuring the length, use a pencil to draw a marking on the back, and then use the scissors to cut the pencil line. According to the wall section size, according to the wallpaper pattern spelling required to cut a good paper, the corresponding number, the two set aside 30 --- 50MM volume cut.
Cautions when cutting wallpapers:
1 Pay attention to the up and down direction of the pattern. Each paper end corresponds to the printing, cuts at the same position in the pattern cycle, and should be squared on me. The length depends on the wall breaking height.
2 Compare the color of each piece of paper. If there is a slight difference, it should be classified on different walls.
3 When paper is cut, the main wall pattern should be symmetrical and complete, and when one wall surface is left with less than a narrow strip of wallpaper width. The narrow strip should be attached to the darker corner.
4 Narrow strips should be used now. This is due to paste. The wallpaper can bulge about 1cm in the width direction. There is inevitably error in the yin and yang corners of the wall, and the required width of the upper and lower ends of the narrow strip should be checked when cutting. When narrow strips should be considered, the relationship between the seams and the measures should be considered.
Tip: The size of the paper is mainly based on the part to be pasted. When the material is unloaded, it should be a little longer than the size of the paste part. The wallpaper is at the inside corner and it is often left with a little extra space, and then the excess part is cut off. To cut the intersection, the wallpaper must be larger than the actual size to be pasted, usually about 3cm long. For example, the intersection of a wall and a suspended ceiling, taking into account that the ceiling may be partially uneven, if it is not the wallpaper attached densely along the edge, then it is likely to expose “white†in a certain position. Therefore, using wallpaper on the wall directly after the cutting method to make it dense.
Measure the size of the wall and the size of the paper. If it is a wallpaper of a flower pattern, it should be neatly arranged for each time it is pasted.
Muffled water articles
Dirty water wallpaper: the so-called stuffy water refers to wet paper with water, so that it can be fully stretched, so as not to encounter the adhesive in the paste and produce uneven stretching. If the stretching is uneven, the surface will wrinkle and affect the paste quality.
(1) paste ordinary plastic wallpaper, suffocating in advance is necessary. Dirty water method: use a row of pens to drench the water to moisten the back (that is, water slide), or you can roll the cut wallpaper into a roll and put it in a bucket of water for 5 to soak for 3 to 5 minutes, and then take out the water on the surface. Drop it and stop it for about 20 minutes.
(2) If the wallpaper is plastered directly on the wall base, the dry wallpaper will suddenly encounter wet adhesive (due to the difference in the degree of water), which will cause different degrees of wrinkling. Fold phenomenon, so the stuffy wallpaper is necessary. If the adhesive is brushed on the back of the paper, and then the adhesive is applied, the adhesive will be stored on the face and folded for a while. (S-folding for about 10 minutes) will make the wallpaper fully stretched by the adhesive, which also plays a role in boring water. . Therefore, the adhesive is brushed on the back of the paper and the process of suffocating water is no longer performed.
Tip: Adhesive brushes in the wallpaper paving are on the back of the paper, and the wrinkling phenomenon of the rubber facing the surface of the rubber for folding for a while will be much better than that of directly coating the adhesive brush on the base layer of the wall.
Tip: boring water: foam plastic wallpaper can swell about 1cm after absorbing water, such as dry glue on the wallpaper immediately after the wall, there will be a lot of wrinkles, can not survive. Therefore, you should first soak the foam wallpaper in the sink, take out the sink and shake off excess water and let stand for 20 minutes. Full expansion of the wallpaper.
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