Is the freshly painted wall plastered because of the quality of the construction?

Powder peeling phenomenon on the wall: wipe the paint film with your hands or cloth, and find that there is powder on your hands or cloth, and the damage can be observed at the wipe part of the paint film Problem 1 The paint peeling may be because the surface is too smooth, and the original paint is only bright paint or powder (plus untreated color paste paint), so the new paint does not stick to the surface; It could also be because of wood rot or metal rust; It could also be because of the poor quality of the paint. Small areas of paint peel off, can be polished with fine sandpaper, then putty, primer, and then repainted.

Extensive peeling must be scraped off all the paint and repainted.

Wall blisters pierce bubbles. If there is a spray of water, it means that there is moisture seeping under or behind the paint layer, and then it evaporates into steam in the sun, and the patent leather will blister. At this point, the blistered paint is removed with a hot air spray gun, the wood is allowed to dry naturally, the primer is applied, and the entire repaired surface is repainted.

If there is no water in the foam, it is likely that the wood grain has cracked, and there is a small amount of air in it, and the air expands causing the patent leather to bulge. Faced with this situation, we should first scrape off the blistered patent leather, then fill the cracks with resin filler, and then repaint; Or there is no filler, and the patent leather is scraped off and the microporous paint is applied directly. CracksGenerally speaking, the reason for cracking in the wall is that the building itself may be in a settlement phase; The other is to brush latex paint before the putty layer dries.

The moisture in the putty layer does not volatilize in time. Over time, the putty layer dries out gradually. During the drying process, the putty layer will shrink to a certain extent, resulting in cracks.

If the fracture range is not large, you can use a sanding block or dry and wet sandpaper dipped in water to grind off the broken paint, polish the surface smooth, apply putty, brush the primer, and repaint.

Instead, most paints should be removed with a chemical paint remover or hot air spray gun before reapplying. There are many reasons for stains on the surface of wall stains, such as the water in latex paint dissolves the substance on the wall and rusts the paint surface; Wipe the walls with steel wool; leakage of hidden pipes in the wall, etc. The following Chenyang water paint analyzes the main reasons for the wall powder to fall off:

1. The construction environment has low temperature or high humidity; 2.The water content of the base layer of the wall is high; 3.No alkali-resistant primer is used for the bottom layer; 4.

If the interlayer paint film is not dry, the surface layer is constructed; 5.The alkalinity of the putty layer is too high; 6.Excessive water mixing or insufficient paint film thickness; 7.

Local water seepage or moisture, or poor atomization during spraying, causing pollution; 8.Floating dust on the surface of the paint film.

Summarize how to prevent wall powder 1, if the temperature is lower than 5 °C and the humidity is greater than 85%, no construction shall be allowed; 2.Try not to build with high air humidity or prolong the waiting time for drying; 3.It is recommended to use an alkali-resistant primer; 4.

The water ratio is controlled at 10%-205Maintain the normal thickness of the paint film, and strictly follow the specifications during spraying construction.

Not necessarily. Because it may also be a problem with the material, or the influence of the weather, it is not necessarily because of the quality of the construction.

It may or may not be. There are many reasons for this problem, and it may be that the basic work is not done well.

It is possible that yes, for example, the master did not do a good job of the substrate when painting the latex paint, for example, did not scrape the putty.

Many owners will have a powder on the wall after decorating a new house, and there are many reasons for this phenomenon: 1. Maybe the foundation of the wall was not cleaned at that time, or the cement number was not accurate, and there was a large area of hollowing in the house structure itself, and the decoration construction could not be dealt with in time. 2. It may be that the next step of construction is carried out after the leveling treatment of the wall is not dry, which is also the most important problem to pay attention to during the winter construction.

3. Material problems, before painting, the material should be diluted with water with thinner, if the water is too much, the paint film will become thinner, not only can not cover the wall base, but also will appear powder and other phenomena. Generally speaking, it takes 7 days for the wall to be completely formed. In order to catch up with the schedule, some decoration companies can not exceed this time period, at present, some decoration companies choose the appropriate primer to seal the wall substrate and improve the adhesion of the topcoat, which can effectively prevent the occurrence of problems such as powder loss in the later stage.

Common problems in the quality of wall painting: common problem 1: the reason for the hollow drum crack in the wall plastering layer 1, the base layer is not well treated, and the cleaning is not clean.

Reason 3, a plastering is too thick, and the intermittent time of each layer of plastering is too short. Prevention and control plan: At the junction of different base materials, the metal mesh should be nailed, and the lap width on both sides should not be less than 100mm.

Layered plastering can not exceed the specified thickness, where greater than 9mm layered thickness should be layered plastering, divided into survival. Reason 4: The wall is not watered enough to be moist, and the moisture in the mortar is easy to be absorbed, which affects the adhesion. Prevention and control program:

The base wall should be watered before plastering construction, and it should be poured thoroughly and evenly, so as to ensure that the watering depth enters the wall 8 10mm, and the brick wall should be watered more than twice a day in advance, and the speed of water absorption of aerated concrete wall is fast and then slow, and the water absorption is slow and lasts for a long time, and the number of times of watering should be increased, so that the plastering layer has better coagulation and hardening conditions, so that the water will not be sucked away by the aerated concrete in the process of mortar hardening. This answer applies to wall painting in most cases.

The age is too old and the previous white ash is not the current washed paint or melamine, so it is normal to drop the ash.

1. Brush the glue first, and then apply the first paint base when it is about to dry.

2. Wait for the bottom to almost dry and apply the second coating. Generally every 5 days.

3. When the second paint is 7 layers dry, start to apply the third coating. About 3 days.

4. Scrape the paint for the third time, and wait until it is completely dry to start painting.

Note: In order to look good, the builder often smears putty powder on the wall when accepting the house, which is white. Before decorating the house, this thing must be shoveled, otherwise your wall spray paint is not directly attached to the wall, but on the layer of putty powder, after a long time, this layer of things will be humid and temperature and warped, and the later decoration paint will also fall off.

Shovel off the original putty, roll it on the wall, and then scrape the putty again and brush it white.

The worst material you use in the house, you have to scrape the putty again and brush the latex paint.

Because the fighters only shaved the industrial white, they all need to be snatched down and redone.

The wall powder is caused by the putty on the wall is not resistant to water, so choosing a more professional putty powder is the most important thing, go directly to the store to buy it, the cement-based water-resistant putty has a good reputation of Degao, and the moisture-proof and water-resistant effect is quite good.

Dust on the wall always brings inconvenience to the life of the family, and if you accidentally bump into the wall, you will rub the dust all over your body. Generally, this situation is caused by the poor quality of putty powder. You can buy putty again and re-brush it. It can also be solved with the following methods: Method.

1. Wall plaster: The main function is to repair and fill all kinds of incomplete wall problems such as wall damage, potholes, cracks, peeling, blistering and delamination. Method.

2. Wall paint: The main function is to cover the whitening wall, protect and repair the wall, and can directly paint the wall that covers the dirt stained wall for renovation. Construction Method:

First remove the loose peeling place on the wall, wipe the potholes and peeling parts with wall plaster, polish it with sandpaper after drying the next day, wipe off the surface powder layer, dilute it with wall paint of about 10%, stir evenly before brushing the wall that needs to be whitened, and you can paint it 2-3 times.

1) When polishing the surface layer of putty on the interior wall, it is necessary to master the appropriate polishing time, and the best time for polishing is to polish the putty surface immediately after the watermark disappears. It has been proven that the finish of 1 2 cm should be flattened or polished.

2) After the surface of the exterior wall putty is dried, it should be moderately polished, and sufficient water maintenance should be carried out, the general maintenance is divided into two or more times, if necessary, please use the transparent closed primer with water (1:5) as the second water spraying liquid, the effect will be better.

3) The product must be used within the shelf life, if it exceeds the shelf life, it must be scraped, and then the construction will be carried out after passing the inspection;

4) The product must pay attention to waterproof treatment, should be stored in a cool and dry place, and ensure that the envelope is intact.

5) In summer or under high temperature and strong wind climate, it is best to wet the wall with clean water before scraping putty, and the putty can be applied after there is no open water on the surface of the wall.

Question: The corner wall paint of the outer wall of my bathroom is falling off, there is a watermark on the wall paint at the beginning, and some places are bulging, after I shovel off the wall putty, there will always be a layer of white ash on it the next day, I don't know if it is caused by the leakage of the bathroom or the moisture on the wall, and there is no problem with the pipe.

Answering your question is actually quite simple and easy to handle. First of all, the waterproofing of your bathroom is not done well, the water seepage of the bathroom wall seeps into the bedroom and living room, and the latex paint on the wall slowly deteriorates and bulges away in the humid environment. Workaround:

The waterproof requirements of the bathroom are that the waterproof height of the vertical wall should not be less than 1800mm for the bathroom with a shower, and not less than 300mm for the bathroom without a shower.

Therefore, it is recommended that the bathroom wall be waterproofed, just use JS or acrylic waterproof paint. Do waterproofing as required, and your problem will be easily solved. If you feel that the waterproof layer is damaged, it is recommended to re-do the waterproofing including the ground waterproofing, hoping to solve the troubles of life as soon as possible.

How about wall painting without shedding powder? : Before plastering on a smooth surface of pure concrete, a number of crosses should be drawn and a layer of PVA adhesive should be applied, which will facilitate the adhesion of the plaster and the fuel for the trousers.

Paint the walls with high-quality lime water, close the doors and windows before the coating dries, bring the brazier or coal stove indoors, and open the doors and windows after baking for an hour. In this way, the stone gray color is white and will not fall off after the coating dries.

20 parts of quicklime, 4 parts of white powder, 100 parts of water, mixed into mortar, and then boiled with 250 parts of water and added to the mortar, the wall surface painted with it will not fall off the white powder.

This answer applies to treatments such as wall painting.

When you've just finished your interior painting project, you'll expect a clean and beautiful wall. However, sometimes after painting, you see a wall with powdered water. This is unavoidable for any DIY paint job or interior paint job that has already been paid to a contractor.

Here are some common causes of powder loss and how to deal with them.

1.Not adequate cleaning.

Before you start your interior painting project, you need to make sure that the walls are completely dry and clean. Whether it's a newly built interior or a renovated space, the walls and floors need to be thoroughly cleaned. You need to use water and soap as a detergent to remove dirt, dust and residual substances from the walls.

Otherwise, the paint will form a situation of poor adhesion on the surface of the wall, which is easy to fall off and affect the aesthetics of the wall.

Solution: Clean the wall with clean water before painting. Wait for it to dry and apply primer to the wall. This can increase the adhesion of paint and walls, helping to reduce the likelihood of powder loss.

2.The wall is damp or humid.

The walls need to be completely dry before starting the interior painting project. If the wall is too wet or working in a humid environment, the paint can easily be mixed with water mist particles, causing the wall to chalize. In addition, if you are working in high humidity weather, the wall will lose the opportunity to dry, which will lead to controlled degradation.

Solution: Make sure the wall is indeed completely dry before construction. To control the humidity on the walls, you can use a dehumidifier in the room or keep the room ventilated. Good ventilation can help the walls dry quickly and prevent chalking.

3.The old paint is not sufficiently pulverized.

If you don't wait long enough after your last paint job, the paint may never end up drying. Even if you cover the new paint, the wall will still peel off when there is a reaction between the new paint and the old paint. This is due to the aging of the surface of the old paint, which embrittles and loses adhesion.

Solution: Clean the walls and wait long enough to make sure the old paint is completely chalked. Depending on the material and size of the wall, the waiting time may vary.

4.The paint is not sufficiently dry.

If you're busy covering another layer of paint and you're rolling but the paint hasn't dried yet, the wall will come off and a dust build-up. This is due to the failure of the adhesion of the paint, so it is not fixed to the wall, but forms a granular substance.

Solution: There is a saying in the terminology called "you get what you pay for", that is, to use *** paint. Good quality paints tend to dry faster, and spray can be used to reduce the thickness of the coating. This method ensures that the paint dries well and does not produce impurities and dust.

Whether you're DIY your own interior paint work or pay a contractor to deal with it, these common powder loss problems can be avoided and solved before drying. Proper cleaning and drying will help to control paint shedding, resulting in a clean, beautiful interior space.