Is it OK to paint latex paint directly on an old wall?

It can't be generalized, because the situation on the wall in everyone's home is different. If the walls of your home are damaged, you can't paint them directly.

In this case, it is best to redo the wall: clean the wall first, then scrape the putty, sand and paint. Wall treatment is a very important part of the renovation of old houses, do not try to save trouble, otherwise it will be very troublesome in the future.

Latex paint wall quality grinding method.

The first method is to use a manual angle grinder for grinding. The area of each grinding of the angle grinder is relatively small, and the speed is relatively slow, and this method may have a high labor cost. Until the latex paint on the entire wall is sanded clean.

The second way is to use a special grinding machine, which is the kind of grinding machine. You should have seen this kind of first-class grinding machine in many places, due to the relatively large chassis area, it can knock off a lot of latex paint at a time, so it is now also the most popular machine. The efficiency of grinding is very high, but it has a disadvantage, that is, it is not as careful as manual polishing.

When many owners are faced with the renovation of the wall of the old house, they must have such questions: can the old wall be directly painted with latex paint without polishing, and what will be the consequences if it is not polished.

If the old wall is originally brushed with latex paint, and the base condition is relatively good, without any damage, the wall can be directly applied to the latex paint, but be careful not to destroy the integrity of the original wall paint film, and do not use latex paint that is much better than the original wall latex paint, otherwise it is easy to peel and fall off; If the original wall at home is not very good, it is recommended to redo the wall, and then apply latex paint after scraping putty and sanding, and it is not recommended to save the decoration cost of the wall, otherwise it is easy to have various problems in the later stage.

When the wall of the old house is refreshed, the situation of the wall base is not very good, do not paint it directly, the correct step should be, first of all, the old wall should be removed from the floating ash, shovel the sand and warp and other parts, after the wall is cleaned, and then paint the interface agent, which can enhance the adhesion to the base, the wall should be painted evenly, and then scrape the putty, it is best to scrape twice, and then polish with a finer sandpaper, and the wall must be thoroughly cleaned after polishing, so as not to have too much dust and affect the adhesion of the paint. The unevenness does not exceed 3 mm, and finally the primer and top coat are brushed.

In short, whether the old wall can be directly painted is also divided into situations, the situation of each family wall is different, the scheme used is also different, it is best to combine the situation of their own wall to judge whether it is directly polished and painted, or the overall eradication of the new paint, at the same time, it should be noted that when the old wall is painted with refreshed latex paint, it is necessary to deal with cracks and warped skin, for hair-like cracks, direct elastic products can cover fine cracks, and for larger cracks, it is recommended to fill with primer mixed powder, After smoothing and sanding evenly, the construction is low, and the topcoat is low.

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.

If the old wall has peeled or cracked, it is not possible to directly brush the latex paint. We have to use professional tools to answer back to the wall first.

The surface is flattened, and ensure that the wall is free of floating soil, the wall is flat, and the putty is scraped, and the putty can also be scraped in the cheeks of a certain amount of white latex. 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

Brush directly, it doesn't seem to work, my house is six or seven years old wall, some time ago when it was renovated, the old wall was snatched away, scraped the new putty powder, and then brushed the water paint of Yunquan!

The peeling of the old wall can not be directly brushed with paint, and the direct brushing is not only unsightly, but also easy to peel and crack again in the later stage, so it is recommended to do it first.

The version of the putty polishing is flat in the coating, and it is not recommended to do latex paint, one is formaldehyde, the other is that latex paint is easy to peel after a long time, mold, cracking, you can try environmentally friendly paints, such as diatom mud, environmentally friendly wall paint, my home is Tmall Yunquan water-based wall paint, it is better, no peeling, no formaldehyde.

Of course, it is best to start brushing after cleaning and sanding, so as to prevent blistering on the new brush, which is more troublesome.

No. The original wall paint and putty need to be shoveled off. Then follow the normal steps of applying latex paint step by step. They are all brushed with putty powder first, and latex paint after leveling.

To paint latex paint, you must first remove the old wall skin, and it is best to brush putty before applying latex paint.

Yes, as long as the bottom layer is cleaned, like large lotus paint can be directly brushed on.

Absolutely. If the quality requirements are higher, it is also necessary to base the powder and then paint.

Can the renovation of the old wall be directly painted with latex glue paint? This first depends on whether there is dao peeling and cracking back on the original wall.

Moldy, drums and other phenomena, if there is no direct brush, if you directly brush it is a waste of time, the correct way to deal with it should be to deal with the wall first, shovel out all the bad places, scrape the putty again, and ensure that the wall is flat, so that you can brush directly after re-processing, but if you want to re-brush, I personally recommend that you do not use latex paint, because the latex paint smells too big, really to be honest, it will really have a headache after smelling for a long time, Now there is a relatively new type of environmentally friendly material, called Yunquan water-based paint, you can go to see, there is no smell, you can find it directly on the **.

Yes, yes, but be sure to buy it.

Good latex paint. Now latex paint is true and false, a special must polish the eyes, buy the real genus on the line, how long to stay this is not a general range, latex paint smell very big, if not water-based then it is recommended to put a period of time and then move in. And if you are painting the wall, I would like to give you a personal suggestion that I feel better about the diatom mud now, because there is really no smell after brushing, and it is 0 formaldehyde, no benzene is added, and you can move in immediately after drying.

Although the real Nippon paint is also a qualified product, but qualified does not mean that it does not contain benzene, so now health is really important, I used to decorate my home before the Yunquan water-based diatom mud purchased in Tmall, which is very good, and my personal suggestions are for reference only.

1. If the original wall is only dirty, there may be more or less bumps, the wall skin does not fall off, and there are not too many cracks on the wall, this kind of wall can be directly brushed with latex paint.

Even if the wall is very good, it is recommended to go through the sandpaper on the wall before brushing the latex paint, and then sweep away all the dust on the original wall, the composition of the latex paint contains heavy metals, it can produce static electricity, it will absorb the dust in the air, so the dust should be swept away when brushing again, otherwise the newly brushed wall and the original wall can not be effectively bonded, and the wall skin may fall off.

2. If the original wall has fallen off the wall skin or a large area of cracks, simply treating these places will affect the effect of the entire wall in the later stage, and these places in the post-treatment will be a little higher than the original place, so if there are these situations on the wall, it is recommended that the wall needs to be reprocessed. It is not possible to apply latex paint directly.

The wall situation of each family is different, and whether it can be directly painted with latex paint on the old wall needs to be determined according to the specific situation of each family's wall.

If it is a wall that has been very well maintained, only slightly stained, and the foundation strength is also very good, then you can directly paint latex paint on the old wall. If the walls of your home are already very damaged, then you can't spray paint them directly.

If there are cracks, many wall problems may not be visible to the naked eye, so you can't apply latex paint directly, but need to carry out basic treatment.

After living for a long time, we will find that the wall is not as bright as before, and it has become the old wall in everyone's mouth, so in order to restore it to its original state, the old wall can be renovated, and latex paint is a very commonly used decoration in the renovation material, so can the old wall be renovated directly with latex paint? Let's take a look.

1. Is it okay to paint latex paint directly from the renovation of old walls?

No, because the overall condition of the old wall is not so good, and the direct file is likely to cause problems such as peeling off and cracking of the paint film. If the old wall is only two to three years old, and the wall is in good condition, it can be painted as long as it is rubbed and repaired; However, if the condition is not good, it needs to be renovated again to reduce the occurrence of subsequent problems.

2. What are the precautions for the renovation of old walls.

1. No matter how long the old wall is, as long as it is used, the condition of the luggage wall will not be as good as before, and the purpose of re-turning is to restore the original state of the wall as much as possible, otherwise it will easily crack in the future. Therefore, it is recommended that you shovel the materials on the old wall to the base and do it again when you decorate again.

2. The original wall may have warping, cracking and other phenomena, so the wall should be shoveled to the base first, and then brushed with sealing paint after sweeping the floating ash, and then leveled with putty at least 2 times, and then polished and rubbed after drying, and finally brushed the bottom paint, so that the effect of refurbishment is better.

3. The scope of the wall is relatively wide, and these materials themselves will contain a certain amount of VOC, so it is recommended that you do not live here during the renovation period, if it is only a room renovation, it can be decided according to the degree of self-acceptance. In addition, it is necessary to do a good job of protecting other items to avoid staining paint, which is very troublesome to clean.

Summary: After painting, you can remove the protection and clean it, and then open the window, but don't go in to live immediately, because the smell is still relatively strong at this time. About the renovation of the old wall can directly brush latex paint and the precautions for the renovation of the old house are introduced here, I hope the above content can help you.

1. The wall renovation must not be directly painted, and it needs to be treated with the corresponding base layer before painting, especially if the original wall is peeling or uneven, it must be smoothed, and all the peeling places need to be removed. 2. Before renovation, we also need to remove all the original materials, and then the wall can be scraped putty, the putty needs to be scraped at least three times, and after drying, it needs to be sandpapered. Related Knowledge Development Materials:

1. Clean the original foundation level of the wall: mainly include cleaning the original putty layer of the wall, latex paint (wallpaper), other surface decorations, wood decorations, etc. In places like kitchens and bathrooms, there is an extra layer of waterproof paint on the walls than in other spaces.

2. Cracks need to be repaired first. As a rule, cracked walls, joints of lightweight load-bearing walls, plasterboard joints should be glued with kraft paper, plaid fiber cloth, bandages and other materials. 3. Initial primer:

The purpose of this primer is to protect the topcoat, improve the coverage and texture of the topcoat, improve the alkali and moisture resistance, and the sealing function of the substrate. 4. The second sandpaper sanding: After the putty is dry, you can use sandpaper to polish the front side.

When sanding, you need to sanding from the edge to the center of the wall. When sanding corners, you need to be very careful and straighten them. 5. Wall renovation finish brush:

Once you've completed all of the above steps, it's time to start preparing your finish. When mixing the finishing agent, do not add too much water, otherwise it will affect the feel and hardness, as well as the thickness of the coating film, the topcoat is usually used 2-3 times according to the owner's needs and the actual situation.