Can I put wallpaper directly on the paint of the old wall?

It is not possible to apply wallpaper directly.

Repair the walls or scrape the old ones, repaint them and apply the wallpaper!

1.Wall treatment: use a scraper and scrape off the wall impurities, floating soil, and pave the holes and cracks with gypsum powder to smooth out, such as the wall texture is soft or has a powder layer and sweeps the latex paint.

The wallpaper base film should be painted once to make the wall firm, so that the wallpaper will not fall off.

Cutting wallpaper: Measure the height of the wall first, and then cut the length of the wallpaper, there are two situations: do not cut the flower wallpaper according to the height of the wall about 5 to 8 cm in length, as a trimming up and down:

For flower wallpaper, the symmetry of the pattern needs to be considered, so the cutting length should be increased according to the actual situation, usually 8 to 10 cm longer.

Coating glue: the wallpaper glue is painted on the back of the cut wallpaper with a brush, special attention must be paid to the edges around must be coated with glue to ensure the quality of construction, the painted wallpaper, the glue is folded and placed for 5-10 minutes (note, no external force shall be applied, so as not to crease the wallpaper, especially the cloth) so that the glue can be posted after completely penetrating the bottom of the paper, and several pieces of wallpaper are painted each time, and posted in order.

Wallpaper construction: Generally the first wallpaper is posted on the side of the door or in the dark corner from top to bottom, with a scraper from top to bottom, from the inside to the outside, gently scrape the wallpaper, squeeze out bubbles and excess glue, so that the wallpaper is flat and close to the wall.

Trimming and cleaning: cut off the excess wallpaper at the upper and lower ends, the knife edge should be sharp to avoid burrs, and use a good blade when cutting some wall coverings. Then use a sponge dipped in water to completely wipe the glue remaining on the surface of the wallpaper to avoid the wallpaper from turning yellow, after the wallpaper is dry, if there are bubbles on the surface, cut it with a knife and inject the glue and then flatten it to eliminate it (it is better to use a syringe).

You can't stick the wallpaper directly, you must shovel off the surface of the old wall, polish it and then paste the wallpaper, otherwise, the edge of the wallpaper will roll up and gradually fall off after a long time.

Don't brush.

Alkyd varnish "huge poison."

Will keep you from staying at the hotel.

It is also not possible to directly paste wallpaper.

If you want to completely change the style of the house.

It is recommended that you paste wallpaper.

Inspect the wall before pasting.

If there are too large cracks, they should be filled.

Then sand the walls are leveled.

Brush another layer of wallpaper base film.

After that, it's no problem to put up wallpaper.

If it's a good paint, just wipe it clean with water, and if it's just an ordinary paint, it's better to remove it and do it again.

If the old wall has peeled or has cracks, it is not possible to paint latex paint directly. We must first use professional tools to flatten the wall, and ensure that the wall is free of floating soil, the wall is flat, and scrape putty, which can also be a certain amount of white latex on the cheeks. It is usually leveled twice, and when the putty is completely dry, it is smoothed and polished with fine sandpaper.

If the original wall is latex paint, and the foundation strength is good, it can be directly painted after simple hair repair

Hello, I am glad to be able to answer your questions, in this case, according to the following two judgments, 1, it needs to be determined according to the specific situation, if the original wall on the latex paint basic structure is better, there is no problem of falling off, and the surface is flat and smooth, it can be simply repaired, and then directly painted latex paint.

2. However, if the original wall base foundation is not good, and there has been peeling and falling phenomenon, in this case, it is not possible to directly brush latex paint. It is necessary to remove all the original latex paint walls to ensure that the walls are clean and tidy, and there are no cracks. If there is, it is also necessary to fill it with cement mortar or use gypsum to fill the joints, and then scrape putty later.

You only need to scrape twice, and each time you have to wait until it is completely dry, and then sand it with fine sandpaper to smooth it out and smooth. Wait until the putty layer is dry, and then apply the primer, only need to be brushed once.

Question: The high-rise of my house, the property used to be renovated, but the property pit will not buy 1300 yuan a bucket of paint for me to decorate, the wall is smooth, the old paint has not cracked and has not fallen off, and it has not fallen off after grinding it with sand. It's just that after the new paint is applied, there is a solidified paint lump that leaks on the wall, and the old paint and the new paint fall off together when cut with a knife. I'm worried about whether the paint will peel off in the future.

It's not the best question to ask now, it's that the new paint is ready! The new paint is obviously harder than the old paint, and the sand is more difficult to grind. That is to say, after a long time, it may clump and fall off with the old paint?

Question: Can putty powder be painted and scraped?

No, it must be primed, otherwise it is a waste of paint and it is not easy to whitewash, and after the wall is whitewashed, it will be uneven when there is light. Brushing ordinary paint is not as good as good putty. Crooked paint is harmful to health.

If you want to make paint, of course, you have to scrape putty, preferably moisture-proof putty. Otherwise, after a long time, it is easy to blister and fall ash after being wet.

Wait until the putty on the wall is dry, we can brush the paint and brush the paint the number of times can not be less than three times, of course, now there are many people will not choose to brush the paint, but directly spray the paint The advantage of spraying paint is that the speed of construction will be particularly fast, but there are also disadvantages, for example, each layer of paint may be relatively thin. In addition, when choosing coatings, you should try to choose some environmentally friendly coatings, for example, you can consider using latex paints.

If the original wall is originally latex paint, and the foundation strength is good, we only need to paint latex paint after a simple repair, and if the original wall has appeared patent leather or fall off, we need to shovel off the original wall.

Steps to brush old walls with latex paint.

Step 1: Keep the wall flat.

If the old wall has peeled or there are cracks, we must first use professional tools to flatten the wall and ensure that the wall is free of floating soil, floating and sinking, etc., so that the bond between the newly painted latex paint and the wall can also be stronger.

Step 2: Scrape putty and sand.

In order to make the wall more solid and flat, we need to scrape the putty, usually twice (the time interval between the two passes must be grasped), and when the putty is completely dry, then smooth and polish it with fine sandpaper.

Step 3: Apply primer and make up for it.

After the putty wall is polished, the next step is to apply the primer, if the wall eats a large amount of paint, you can add some water to the primer, which can also make the paint more even, it is worth noting that do not use a poor roller to apply, to choose a roller with the same texture as the topcoat, after the topcoat is dry, we need to level some small defects.

Step 4: Paint and maintain.

When painting on the paint, we must grasp the amount of water mixed with the paint, because it affects the thickness of the paint film, the hardness of the paint film, etc., the hair of the drum can not be too short and too fine, the paint film is more perfect, and so the paint is dry, do some care work, it is best not to scrub or any contact with the wall within 8 days.

Precautions for wall renovation:

If the original melamine paint is made, remove the paint film and re-scrape the putty. Applying emulsion paint directly on it is prone to peeling off.

When applying putty on the old paint film, it is necessary to pay attention to the uniform grinding, otherwise there will be a phenomenon that the paint film will bloom after construction due to the different absorption of the substrate.

Recoat the old latex paint film again, you need to deal with cracks and warping, for hair-like cracks, you can directly cover the fine cracks with elastic products, for larger cracks, it is recommended to fill them with primer mixed powder, smooth and polish evenly after the construction is low, topcoat.

The old wall can not be painted directly, after a long time, the original paint has aging, there is falling off, there is dust, and the direct paint affects the bonding strength, it is recommended to use sandpaper to hit it once, and then brush the interface agent before painting.

How to paint old walls:

1. Clean up the old wall: The general old wall will have problems such as oil stains, floating ash, hollow drums or cracks, and low water absorption, so you need to do some cleaning work on the wall. The old wall should be removed from the floating ash first, and the sand and warped skin should be removed; For the oily parts, the original coating should be removed first, and if it cannot be removed, it should be thoroughly cleaned; After the wall is cleaned, scrape two more with putty.

2. Scraping putty: It is better to choose putty with high particle fineness and hard texture, and you can also add a certain amount of white latex to the putty to improve the hardness of the putty.

3. Grinding: Try to use finer sandpaper, generally softer putty (such as 821) with 400-500 sandpaper, hard texture (such as wall lining, easy to quack) with 360-400 is better, if the sandpaper is too coarse, it will leave deep sand marks, and the paint can not be covered. After sanding, the wall must be thoroughly cleaned to avoid too much dust and affect the adhesion of the paint.

The difference between bumps and bumps does not exceed 3 mm.

4. Primer: The primer must be brushed evenly to ensure that every place on the wall is brushed, if the wall eats a large amount of paint, the primer is best to add a little more water to ensure that it can be painted evenly. Don't think that just because it's a primer, it's okay to use a roller that is a little worse, the effect of the primer will directly affect the effect of the topcoat, and you should use a roller with the same texture as the topcoat.

5. Repair: After the putty is polished, there will be some flaws (pit eyes), which are generally difficult to see, only after brushing the paint will be obvious, at this time it is necessary to make up, pay attention to the repair must be polished and smooth, and then brush it with a primer with a little more water, so as not to have color difference when brushing the topcoat because of the different draught with other walls.

6. Topcoat: The suitable for lacquering here is the ordinary lacquering work, do not add excessive water, which will affect the thickness of the paint film, feel and the hardness of the paint film, try to choose a better tool, the hair of the drum is not too short, but it must be fine, so that the paint film will feel delicate, and the painting mainly pays attention to the corner of the wall, the indirect stubble part of each roll and the direction of the paint.

7. Maintenance: The latex paint will dry after 4 hours after painting, but the dry paint film has not reached a certain hardness, which is to care, very simple, do not scrub or touch the wall within 7-10 days.

It must be the first to remove the old paint, and not removing the old paint when renovating the wall will not only affect the color of the seasoning, but also cause the new paint to be used for a shorter time.

What should I pay attention to when refresh paint for old walls? These questions are important!

Remove the old paint first. This is because if you reapply the original paint, it is easy to lose the paint. Therefore, it is necessary to remove it first, which will make the wall more evenly painted.

I think it's better to consider how clean or damaged the wall is. If the damage to the wall is more serious, the old paint itself has little protective effect on the wall, and the wall under the paint may also have cavities and loose places, so removing the old paint first is conducive to further repairing the wall.

Renovating an old wall is, of course, removing the old paint first and then refreshing the paint. If it is not removed, the new paint cannot fully blend and cover the old paint, and the surface is prone to potholes, unevenness and aesthetics.

If you are sure that the surface of the putty layer is smooth enough without sanding, if you feel that there is no floating ash or oil stain and loosening on the surface of the putty layer, you can directly brush the paint.

If the putty layer is not cracked or uneven, it can be applied directly with latex paint.

Other Notes:

If it is a coating, it will be soaked after rolling it with hot water, and it will be scraped with putty and sanding after being removed.

If it is latex paint, after sanding with an abrasive cloth, putty is repaired and polished, and then the latex paint is brushed; If the paint is painted, it must be removed before scraping the putty.

The current latex paint products generally do not react, of course, with the same brand of the best! In short, the most important thing is to check the original base of the wall first.

Yes, but it depends on the situation.

1. Usually after living in the house for a period of time, the wall surface has some damage, such as paint peeling, uneven wall, paint peeling and other phenomena. If the paint of the old house is tight and does not fall off, and the wall is smooth, you can directly brush the base film and pave the wallpaper, which is more convenient and worry-free.

2. If the wall of the old house has been damaged greatly, or the original wallpaper has been pasted, then the old wall material needs to be removed, and after the polishing is smooth and smooth, the wall surface is smooth and smooth, and the wallpaper can be paved.

Rolls of wallpaper have a certain weight, if the weight of the wall paving is heavy, it is inconvenient to pave, and it will bring a lot of inconvenience to the installation. Therefore, before paving, it is necessary to measure the size, calculate the number of rolls of the wallpaper, cut the corresponding length, align the pattern and design, and number the wall.

Compared with other wall decoration materials, wallpaper is cheaper, and it is not inferior to other materials in terms of decoration, but wallpaper has a lot of places, that is, the service life is shorter, basically about five years will occur in terms of quality and decoration changes, you need to replace the wallpaper, so can the old wall be directly pasted with wallpaper? Let's take a look with Qeeka Home experts.

1. Can the old wall be directly pasted with wallpaper?

The old wall can not be directly pasted with wallpaper, because there must be a lot of dust on the old wallpaper, and the bonding effect with the wall is not so firm, there will be falling off, uneven places, if the wallpaper is directly pasted, although it is trouble-free, but the firmness is also greatly reduced, so the mold Sen must tear off the old wallpaper, before the new wallpaper can be pasted.

Second, what to pay attention to when pasting wallpaper.

1. Pay attention to the construction environment.

Wallpaper in the construction is necessary to pay attention to the surrounding environment, if the air is too humid, or the wall has been moistened then the code is wet, it can not be paved, will affect the quality of wallpaper paving, and even fall off and other problems.

2. Pay attention to grassroots treatment.

The wall surface of the wallpaper is required to be no floating ash, flat and dry, and the wallpaper will not appear bubbles, uneven and uneven state, and it is more beautiful and durable, and it is best to brush a layer of polyester paint before pasting the wallpaper, which has a waterproof effect, which can avoid the problems of moisture and mildew in the wallpaper.

3. Pay attention to the maintenance after construction.

If the wallpaper is just paved, you need to open the doors and windows for ventilation during the day, so that the wallpaper can dry naturally, but at night you should close the window, because the humidity sent by the late grandson is relatively large, and if you enter the room, it is easy to affect the paving effect.

Summary: The above is about the old wall can be directly pasted with wallpaper, and what to pay attention to when pasting wallpaper, I hope the content shared can give you some reference, if you want to know more about relevant knowledge, you can **** Qijia to consult.