Why does the wallpaper get moldy after it is pasted? How to paste wallpaper will not get moldy

Today, we officially launched the "You come to ask me to help" column, the majority of users raised about wallpaper construction, wallpaper glue and wall base film and other products to summarize the answers, welcome the majority of users to actively ask! The following is a Q&A in this issue.

<> Jia powder. 1. In winter, the glutinous rice glue can't be adjusted and there are particles, what's going on?

If there is no problem with the quality of your glutinous rice glue, it may be that your glue mixing method is incorrect, and it is recommended that you prepare it according to the following glue mixing method:

When the temperature is low, under the premise of not adding water, stir the glue until it is evenly drawn;

The first time to add water accounted for 20% of the glue proportion, after the adjustment is even, the second time to add 30% of water, the third time to add 50% of water;

The frozen glue needs to be taken out in advance to thaw at room temperature or with boiling water.

Xiao Jia. <> Jia powder.

2. What happens to the water after glutinous rice glue is blended?

It may be caused by microbial contamination. Water or glue mixing utensils are not clean and contain bacteria, leading to bacterial contamination, it is recommended that you use clean water and utensils.

It may be that the glutinous rice glue is not properly mixed with water, and the glue is too thin and thin, and the glue will settle with increasing time, causing the glue to stratify into water, so it is recommended that you modulate it according to the instructions.

If it is stored at too high a temperature (40) after the glue is adjusted, it is suitable for bacterial growth and multiplication, and it will also cause a large number of microorganisms to multiply and form chemical water. When the temperature is high, it is recommended that you keep the glutinous rice glue in a cool place.

Xiao Jia. <> Jia powder.

3. What is the discoloration of glutinous rice glue after adjustment?

If glutinous rice glue is mixed with rusty water, it will turn red and yellow when the construction tools are rusty;

Glutinous rice glue with rubber powder changes color after glue, some rubber powder contains metal ions that exceed the standard, and metal ions will react with the glue to cause red, yellow, etc.;

After glutinous rice glue is adjusted, microorganisms will produce colored substances during the reproduction process.

Microorganisms and metal ions are caused by contamination, and it is recommended to use clean water and dispensing utensils.

Xiao Jia. <> Jia powder.

4. Why does the wallpaper get moldy after it is pasted?

The moisture of the wall exceeds the standard;

After the construction is completed, the wall seeps water, water vapor is consumed, and the anti-mildew factor in the colloid is decomposed;

After construction, there is no timely ventilation, the glue between the wallpaper and the wall cannot be dried, and the moisture in the glue penetrates into the wallpaper or wallcloth, causing mildew;

The correct way is: deal with the base layer of the wall, keep the wall dry, the moisture content does not exceed 8%, and pay attention to ventilation after 2-3 days after the construction is completed.

Xiao Jia. <> Jia powder.

5. What is the problem of the caking and thickening of the wall base film?

The wall base film is constantly frozen, and the viscosity will rise during the thawing process, resulting in thickening; When there are too many freeze-thaw cycles, the wall base film will lose its fluidity and agglomerate;

Some types of thickeners are not properly selected and react with the emulsion, resulting in thickening and eventually agglomeration.

Solution: Appropriately increase the amount of water, stir at high speed with a stirrer for 10 minutes, check whether there are particles after stirring, and apply for return and exchange if there is any.

Xiao Jia. If you have any questions about the product, or encounter problems during the construction process, please leave a message for consultation, and we will communicate and solve it together! If it is an incurable disease, you can get the answer from the engineers of the R&D department of Jialifeng.

Caused by the new decoration of the wall, the moisture of the newly renovated wall is too heavy.

The house is damp heavy.

The quality of the wallpaper is poor, the air permeability is too poor, and it cannot be mildew and moisture-proof.

If the wall is moldy, it will be troublesome to deal with, and the moldy wall needs to be smoothed and cleaned up, and then the paint anti-mildew agent is added to the paint, and the appropriate proportion is added, and it will not grow mold after brushing again. Try to keep your home clean, dry and ventilated as much as possible, which can also reduce the risk of mildew, and long-term survival in a moldy environment is not good for yourself and your family. What causes the mold on the wall, whether it is the wall itself or the decoration construction, and the cause of the damp environment.

So what to do if the wall is moldy, and what are the effective ways to deal with it? If it is a moldy wall, it is near a window, or an air-conditioning hole. If so, the most direct way is to replace the window, and then solve the problem.

In short, the quality of the materials selected from the beginning of the decoration is very important, the putty powder is low-grade, the water resistance is strong, and the quality of the wall paint is excellent. ‍‍

Because some houses may be damp in the spring, and mold may grow after the dampness.

Wallpaper on the wall can protect the wall from damage and make the interior decoration style more diverse. However, if the wall is not waterproofed well, or the environment is too humid, the wallpaper will inevitably become moldy, and even the entire wall will be moldy. If it is moldy, it is not easy to clean it, so it is best to take care of the wall when we put on the wallpaper.

1. The wall should be tested before construction. If the water content is too high, construction cannot be carried out. The moisture content of the wallpaper construction wall should not exceed 8%.

2. In the spring and summer seasons that are prone to mold, you can spray antifungal agent on the wall or disinfect the green space of the whole house before pasting wallpaper, which can play a preventive role.

3. In the construction process, the mixing of glue and the thickness of glue should be well controlled, the glue should not be too thin, and the glue should not be too thick.

4. Before the construction of wallpaper, it is necessary to do a good job of moisture-proof work and paint the base film of the wall, which can be moisture-proof and alkali-proof.

5. Pay attention to opening and closing doors and windows, and close windows to prevent moisture when the air humidity is high. Open windows for ventilation when the weather is nice.

6. Pay attention to indoor cleaning, and pay attention to formaldehyde and other pollution when introducing new household appliances and furniture. It is best to fully purify the indoor air before moving in, and move in safely after the treatment is completed and the test is qualified.

Moldy wallpaper will have an impact on health, so it is recommended to clean it before moving in.

The spore powder of the wallpaper mold moves with the air. Long-term exposure and inhalation can cause respiratory diseases and allergic symptoms, such as bronchitis, tonsillitis, etc. People with weakened immunity may also cause headaches, fever, mucosal inflammation, etc.

Wallpaper mold can hide a large number of hepatitis viruses and flu viruses. Don't ignore the dangers of wallpaper mold to the human body. Also, if the wallpaper is moldy, replace it immediately and open the window for ventilation, and try to dry the room as much as possible.

1.The environment is humid. The material of household wallpaper is mostly paper, cloth, etc., and if it is in a humid and airtight environment for a long time, the walls and wallpaper will be moldy due to moisture.

2.Construction quality. In the process of pasting wallpaper, if the technology or details are not in place, it will cause the wallpaper to curl or bulge.

In fact, this is mainly because the glue is not completely dried during construction, and the temperature difference between indoor and outdoor is large. Close doors and windows and dry in the shade. After 3 days of paving, you can gently wipe off the remaining wallpaper glue at the seams of the wallpaper with a damp towel.

3.wall quality. If the quality of the wall is unqualified, it is easy to seepage, and the PVC wallpaper has poor air permeability, and the wallpaper glue is glutinous rice flour and other organic matter, which is easy to mold.

Therefore, the most important thing is to do a good job of drainage measures on the wall. Do not put wallpaper near the window and pay attention to waterproofing.

4.The quality of wall insulation. This is the fundamental factor of moisture in the wallpaper. If the wall is not insulated properly, the temperature of the wall will change greatly. When hot air meets cold wallpaper, condensation droplets will appear, which is easy to mold.

Can moldy walls be wallpapered?

This answer is very concerned about everyone.

Can such a wall be wallpapered? And how to deal with it?

1Can moldy walls be wallpapered?

Don't put wallpaper on moldy walls! The mold of the wall is nothing more than the cause of moisture on the wall. If the moldy wall is not treated, the direct pasting of wallpaper will cause:

1. The paste between the wallpaper and the wall is not firm, hollow, blistered, and then the edge falls off;

2. The plant starch glue used in pasting wallpaper provides sufficient nutrients for the existing mold, and the mold will grow wildly in the new environment, and the area and degree of mold will be larger.

2. What should I do?

There are two reasons why the walls are damp:

1. Because of the water seepage inside the wall, this situation is generally more serious, and there is no doubt that the fundamental problem needs to be solved. Do a good job of waterproofing first, then shovel off the moldy area and the nearby soft walls, and then spray the moldy area with mold remover to stop the growth of mold. Scrape the putty powder from the new, brush the base film, and then paste the wallpaper.

2. Because of the mold caused by the orientation, external environment or humidity of the house, according to whether the mold causes damage to the wall. If the condition is not too serious, wipe the mold spot clean, and then spray the moldy area with mold remover; If the mold is more serious, it is necessary to shovel off the damaged wall, scrape the putty powder from the new, brush the base film, and then paste the wallpaper.

3How to avoid mold again?

In order to avoid re-mold re-occurrence should be noted:

1. Dry the wall thoroughly, eliminate the causes of mold and correct heating and ventilation. During wet weather, try to keep windows open as little as possible.

2. Try to make the wall dry, and use dehumidifiers, air conditioners, and fans to absorb the moisture on the wall in humid weather.

3. Once there is moisture on the wall or furniture, it should be wiped off with a dry rag immediately.

No way. x0d x0a First of all, a large part of the wall mold is not up to par with the quality of the wall, which is prone to water seepage, and the wallpaper with wallpaper PVC has poor air permeability, and the wallpaper glue is glutinous rice flour and other organic matter, so it is easy to appear moldy again. A good solution to this problem is to choose a good moisture-proof wallpaper base film.

x0d x0a Keep the wall dry, the wall must be kept dry, and the new cement construction generally needs to be maintained for 20 to 40 days before the wallpaper can be paved. It is worth noting that when decorating, care should be taken not to let the non-standard construction mix the sea sand that is not suitable for wall painting. Sea sand has a high salt content, which can easily absorb water and bury "water hazards" for the wall in the later stage.

X0D X0A pays attention to the quality of paving, three points of material and seven points of engineering, and pays attention to small details when laying wallpaper on the wall, which can achieve better results. Wallpaper generally has a variety of patterns, when paving must pay attention to whether there is a large gap between the two wallpapers, whether the parquet is aligned. In addition, watering will wet the wallpaper during paving, and there will be a certain shrinkage after drying, so it is necessary to leave a good telescopic position.

Try not to open the shrinkage joints of the wall to the windward. X0D X0A insists on use and maintenance, proper maintenance can prolong the life of the wallpaper and enhance the moisture-proof function. Do not open windows and doors during and within 24 hours after the end of construction.

Excessive ventilation will cause the wallpaper to dry sharply and shrink unevenly, causing cracks in the joints. After 3 days of paving, pay attention to adjusting the ventilation. Doors and windows should be opened during the day to maintain ventilation; Doors and windows should be closed at night to prevent moisture from entering, which will affect the firmness of the paste.