When the old wall is being painted, should the original putty on it be shoveled off?

In general, the wall skin will be shoveled off (batch putty layer) for the decoration of old houses, and the surface of the wall will be damaged due to the aging of the wall skin surface or the demolition and vibration in the early stage of decoration. After shoveling, the surface dust should be washed off with water, and the wall should be brushed after drying.

I'm done, like my click to follow. If it is not eradicated, the thickness of the new wall will be thickened, and the new wall will have strong adhesion, and after drying, it is easy to pull up the old wall skin, resulting in cracking and hollowing of the wall.

Shedding and other problems. Ten years ago, many people did not remove the original white ash layer from the wall. At that time, the practice was to remove the heavy batch of putty from the partially damaged, hollow and peeling parts, and the rest of the wall was rolled with glue, putty, sanding, and rolling latex paint.

Again, quality problems are rarely found. Whether the original white ash should be eradicated in the process of old house decoration, I personally think it mainly depends on two points, 1. The original decoration period of the old house, and whether the owner of the old house originally invested or lived by himself. 2. See, touch, see if there is any phenomenon such as depowdering and hollowing.

Let's take a look at the details!

<> many second-hand houses purchased by owners have to be redecorated, which also gives them a headache; Because the walls of some second-hand houses have peeled; The following Chenyang water paint will give you a detailed analysis of the old house decoration process, whether the old wall skin needs to be removed? Shoveling the wall skin is not a must, and it is necessary to shovel the wall skin when the wall of the old house is scraped, loose, hollow, and the latex paint brushed and the wall is not firmly combined. and even large areas of shedding.

Moreover, the decoration of the old house will definitely involve some changes to the ceiling, water and electricity, and partition walls, and the reserved walls should be planned before the eradication, and the pipeline direction of water and electricity, whether there is a ceiling, etc., so as to avoid the waste of labor after the wall skin is removed in front of the wall and due to the later changes. The demolition of the old house wall If it is not demolished, it will affect all kinds of scraping putty in the later stage.

Hanging the heater will also affect the hole in the wall, so it is best to dismantle it, so that although the amount of work is large, it will definitely not affect the later use.

It must be shoveled, the old putty layer and the new putty layer will repel each other. No matter how well you scrape the surface, if there is a problem inside, it will always affect the surface. Shovel until the cement layer is seen, and then stir with white cement and 801 glue to play the role of priming, and then scrape putty on the surface.

In this way, there will be no anti-damp, peeling and moldy in the future.

To dismantle, when refreshing the paint, you have to shovel off the old putty, which is also to facilitate the refresh of the paint, and the retention of the putty will also have a bad effect, which will make the paint not beautiful enough.

Definitely going to shovel it off. If you don't shovel off the original putty yourself, then after repainting, the walls will be ugly.

To shovel off. Because the original putty will affect the painting, it may cause unevenness, so it should be shoveled.

Yes, re-brushing putty and repainting the wall will have a high flatness, and this operation will take a long time.

Before, some netizens asked: Do you want to ask a master to repair the paint and paint the walls of the old house, and can you paint it yourself?

Of course, the wall paint can be painted by yourself, but you need to master certain basic knowledge, and it took some time to sort out a list of the commonly used wall paint skills of the decoration masters, hoping to help the owners who want to paint themselves.

Step 1: Flatten the wall.

Remove damaged, peeled and loose walls and keep them dry.

Step 2: Apply [wall plaster].

Use a scraper to evenly paint the wall paste on the wall that needs to be repaired, and the thinner repair position can be flattened at one time, and the thicker position needs to be painted many times.

Step 3: After 12 hours, sandpaper sanding.

After the wall plaster is dry (usually 12 hours), gently sand it with sandpaper.

The fourth step is to apply the wall paint.

Apply the wall paint evenly to the repaired wall, and after it has dried, apply the wall paint again.

After the above four simple steps, the repaired old wall is basically completed.

2.Before painting, it is necessary to take protective measures for other areas that do not need to be painted.

3.High-quality non-linting brushes are required.

It mainly depends on the condition of the wall.

First, if your wall does not have any blistering, peeling, or hollowing, it can be used as a preliminary condition for not eradicating.

Second, what are the original walls of your house at the same time? If it is also latex paint, it can be removed internally, but if it is the earliest white way, it must be removed.

Third, whether it is a roller brush or spraying, the impact on the original paint is great, it is recommended that you use a wet cloth with water to stuff the wall for about two minutes, if the wall is still strong without any problems, then congratulations you can directly brush again, if blistering, then it is likely that the same problem will occur when you spray, in this case, you can brush some paint, you can choose a strong covering coating, such as Yunquan water-based wall paint is very good, you can buy it on Tmall.

The quality of the putty and paint used in the old house is generally not good, and the brush is generally very thick. Now it is all latex paint, and the original putty will fall off when it absorbs water during the brushing process, so it must be shoveled.

In fact, it is very simple to eradicate, spray water twice with a sprayer or roll on both sides with a paint stick, and the wall can be easily removed with a wet shovel. However, you can also try it partially, if you can't shovel it, it means that the original wall is *** good, and you can use sandpaper to polish it and re-brush the latex paint.

If there is no problem with the previous skills, you can consider applying putty directly before painting, but you need to polish it well beforehand.

At the same time, it must be confirmed that the base layer is intact and there is no problem.

It is a plaster base and does not require a shovel. Just scrape the white sandpaper and polish the latex paint. If it's putty powder, it depends on the hardness.

The method is to rub the wall with your hands to see if the powder can be removed. If it is latex paint, it can be removed without shoveling. The main purpose of removing the wall skin is to prevent the wall from peeling and falling down for a long time.

Your method is correct, but you need to do it the other way around, 1Clean the wall thoroughly with dish soap and water, dry it thoroughly for 12 hours, and then repair and smooth it with putty and wait for drying.

2.Roll 801 glue over for 4-8 hours to dry thoroughly.

3.Roll the primer once it has dried, and you can paint it.

First of all, can the adhesion between the old paint and the wall be checked? Whether there is a hollowing and peeling phenomenon, if this phenomenon occurs, it is necessary to polish and do the substrate treatment, so as to maintain the adhesion ability of the new paint and the old wall.

If the cohesion is particularly strong, the shovel can not be shoveled, then you can directly batch the putty, there is no problem, if you can shovel off, there is looseness but it is not good to shovel, then you can use an angle grinder to deal with it.

The dish soap is OK to dispose of the wall stolen goods, but it is not okay to remove the exterior wall paint.

It doesn't matter, he may have been embedded with putty powder instead of old powder, so it doesn't matter, but you have to check whether all the walls have empty shells, and repair them all and polish them flat.

It's best not to, because if the old wall paint comes loose, your new paint will also fall off.

OK!! First of all, the old paint must be able to be tightly on the wall, there is no peeling, bulging, falling off, there are these, you have to remove the primer first, the ambient humidity is not large, the wall is neat, you can directly roll new paint.

First of all, you have to look at the old wall depowdering, if you depowder, roll a glue, you can not shovel, and you see that the wall is not only light, if it is particularly light, you have to use sandpaper to polish it again, or you can not shovel, this can be putty or batch paint, and then polish and paint.

As long as the old walls are not peeling. It is okay to scrape the putty directly from the drum.

Paint ** slightly cheaper, but the texture of the paint is limited, the brush looks more dull, not very good-looking, the wallpaper may be better if you decorate, the wallpaper brand personally thinks Ruibao's wallpaper is good, there are many styles, it smells completely tasteless, very environmentally friendly and healthy.

1.The base layer is generally a red brick structure, and this is the skeleton.

2.There is a layer of cement mortar on the outside of the red brick, about a few centimeters thickThe outside of the cement sand is a layer of putty ash, which is thinner than the thickness of the cement sand4Finally, there is the lacquer.

If it is relatively new and the wall is flat, it can be painted directly. If the house is older, you can shovel the original putty ash layer or shovel the cement sand layer together, and then paint the putty after plastering and scraping the putty, you can find Yunquan on Tmall***, coconut net diatom mud can also be.

The original wall putty is very durable, and in this case, there is no need to scrape the wall with other methods. You can apply a hard cloth or glue 108 directly to the original wall, scrape the putty twice, and make latex paint or wallpaper.

If you do not remove the putty from the old wall, you cannot paint the wall, and if you force the putty, it may cause the new putty to stay on the wall for a short time. So be sure to eradicate.

It can be painted, but in this case, the wall is easy to scrape and fall off, so it is recommended to remove the example first.

I don't think so. At this time, the wall is not so smooth and tidy, and other things can not be brushed, even if it is brushed, it will not look good, and it will affect the later construction.

Putty is the putty on the old wall, of course, to shovel off, do not shovel off the old putty wall and the new putty can not be combined, will produce the phenomenon of wall skin falling off or bulging, must be shoveled to the bottom of the cement and then use glue and putty to stir, as a base use, wait until the bottom layer is completely dry, and then scrape the putty operation, so that the wall skin will not be peeled when it encounters water.

1. When scraping putty, the wall must be in a dry state, fill the cracks and holes at the bottom layer, and then scrape the putty after filling, so as to prevent the holes from drying and cracking the putty layer, when the first layer is scraped, it should be dried after thorough drying, sandpaper is used for sandpaper, the second layer of stucco is painted, and the putty is generally operated three times to make the wall smooth and smooth.

2. Putty is elastic, the second layer should not be applied before it dries, in case the wall cracks, when the first layer is dry, the second layer is smeared, even if the first layer is dry, there will be a second layer to make up, in the continuous polishing, the subtle cracks will be polished clean, so that the wall is in a smooth state.

3. The ratio of putty to water is that it must be stirred more than three times before it can be used on the wall, and the putty can not be used overnight.

The wall repainting is necessary to remove the original wall paint, the removal of the old wall paint can make the new wall paint better bonding the wall, in the process of shoveling all the dirt of the original wall will be eliminated, the holes and cracks on the wall will be repaired before painting, and the new wall can have better aesthetics. Relevant popular science knowledge: 1. When the wall is repainted, the dirt on the old wall should be removed and smoothed with sandpaper.

The original topcoat of the old wall is in the form of latex paint or paint, and all the paint surface should be removed, which will affect the adhesion of the paint, peeling and bulging. 2. When brushing the wall, you should also pay attention to the flatness of the wall, and fill it with putty paste after the dirt of the wall is removed, and level the wall, so as to avoid the inconsistent color and unevenness of the wall after painting. 3. Latex paint has film-forming properties, and the dust on the wall should be cleaned when cleaning the wall, which can be cleaned with a feather duster or a brush, and the paint surface will fall off after the wall is dusty and painted.

4. The way of painting is from top to bottom, from left to right, and the painting can be done in a mechanical or manual way, pay attention to protecting the furniture, so as not to splash a large amount of wall paint on the furniture, and pay attention to the strength to ensure the uniformity of the wall when using manual painting.

According to the actual situation of the wall, there are many stains if the damage is serious, so it is recommended to re-scrape and polish, and if it is not serious, it can be brushed directly.

When the old house is painted with latex paint, the paint on the original wall is relatively intact, do you still need to remove the paint on the original wall? Can you paint old walls directly? The original wall foundation at home has good strength, and it is a latex paint wall, so you don't need to shovel off the wall skin, you can directly paint it with simple sanding, cleaning and repair.

It should be noted that the integrity of the original wall paint film should not be damaged, and latex paint with better adhesion should not be used, otherwise the wall will easily peel off.

If the old wall of the <> home is melamine, if you want to repaint, you must scrape off the old wall skin or paint the wall, and then repaint the putty powder, and then paint it after polishing. Don't cover the dark paint with light paint, paint the wall with white paint in advance, and then wait for the paint on the wall to dry white before you can paint the color paint again. If the domestic economic conditions allow, it is recommended to do it again.

If you buy a wall that has not been renovated for a long time, then when dealing with the wall, it is possible to keep the original wall and not completely shovel it, so that the owner can use a steel brush, sandpaper or grinder to polish the wall, and then brush the latex paint.

For shoveling wall paint, you only need to shovel to the cement layer, if the cement layer is pulverized, cracked, and peeled off, you need to shovel out the red bricks and finally repaint the wall. See if there are any large-scale cracks or "cracks" on the wall. You can try to dig a hole in the wall with nails, because the loose layer of sand in the wall can dig out the sand, so it is necessary to shovel the wall and shovel off the red bricks.

Tear down the walls and check for large areas of empty barrels. Before processing and construction to the base layer, the original old wall must be cleaned up, and the bad wall must be thoroughly cleaned, and the wall that has been brushed with latex paint must be polished after disassembly, and the skin and dust on the wall must be removed after polishing.

To fill a small part of the wall with depressions and cracks, you can fill in with plaster, and make sure that the wall is smooth and clean before painting. In order to avoid the problem of peeling and cracking of the wall after painting, the environmental protection interface agent can be brushed after the wall base layer is repaired, and the putty can be brushed after the interface agent is dry, so as to ensure that the new coating is closely integrated with the original base layer.