Is wall waterproofing important for exterior walls or interior walls?

One is used for interior wall waterproofing, and the other is used for exterior wall waterproofing. According to people's general psychology, interior wall waterproofing agent and exterior wall waterproofing agent are both wall waterproofing coatings, why should they be called separately? This starts from the particularity of the waterproof project, water is everywhere, it is not easy to do a good job in the waterproof project, and there are too many influencing factors to consider.

The interior wall waterproofing and exterior wall waterproofing are different because of the different frequency of water washing, and the materials required are different, so although the interior wall waterproofing agent and the exterior wall waterproofing agent are both wall waterproofing agents, they are essentially different.

Some people say, can you just do interior wall waterproofing in order to save money? The answer is no, because the waterproofing project is not an independent project, this is not only a waterproof project, but also after the completion of the waterproofing project, the quality will affect the quality of other projects, for example, if the exterior wall waterproofing is not done, it will affect the sound insulation effect of the family, and the outside sound and dust will enter the interior wall through small gaps and corrode the interior wall, so the interior wall waterproofing and exterior wall waterproofing are carried out at the same time, not just one, and, if you do not do the exterior wall waterproofing, one day the exterior wall seeps water, It will affect the waterproofing of the neighbor's family and the harmony between the neighbors!

Of course, it's the exterior wall, the exterior wall is not done well, and the interior wall is useless no matter how it is done.

The main difference: exterior wall paint is used to paint the façade of the building, so the most important indicator is the resistance to ultraviolet radiation, which is required to achieve long-term irradiation without discoloration. Exterior wall coatings are also required to have water resistance and self-cleaning.

The paint film should be hard and smooth, and the dirt will be washed off. Interior wall paint is a latex paint used for general decoration. Latex paint is an emulsion coating, which is divided into two categories: polyvinyl acetate emulsion and acrylic emulsion according to the different substrates.

Latex paint uses water as a diluent, which is a kind of paint that is convenient for construction, safe, washable and breathable, and it can be blended with different colors according to different color schemes. Exterior paint can be used for interior painting because it is also water resistant; However, interior wall paint does not have the function of sun protection, so interior wall paint cannot be used as exterior wall paint.

The exterior wall must be waterproof, because the exterior wall is eroded by rain all year round, and the wind and rain blow and day and night alternately. Functionally, it is given the task of resisting the erosion of external natural weather, and this requirement is strong enough to put forward higher requirements for building materials, especially in terms of safety and durability.

If the exterior wall is not waterproofed, the erosion of rainwater all year round will make the wall absorb a lot of water, and the moisture will gradually "bubble" the wall, in the water environment, and often exposed to sunlight. On the one hand, the service life of our building materials and decorative materials is greatly reduced;

On the other hand, being in such a humid environment for a long time and the evaporation of water is not good for health.

Dear, I'm glad to answer for you: interior wall waterproofing is not recommended to be used on the exterior wall, waterproofing is one aspect, considering the weather resistance and other factors, it is best not to brush the interior wall waterproofing, from the appearance and effect of the poor system is not big, but the exterior wall adhesive is mainly waterproof and ultraviolet rays, and other properties are no different from the interior; However, indoor adhesives have high requirements for the release of formaldehyde, and the national standard "Hygienic Standards for Formaldehyde Cultivation and Rent in Indoor Air" stipulates that the maximum allowable concentration of formaldehyde in indoor air is milligrams of cubic meters, that is to say, once the formaldehyde release of indoor adhesives exceeds this standard, it is unqualified; At present, the country does not have a mandatory standard for the exterior wall, that is, the formaldehyde release of the exterior wall will not form harmful pollution to the surrounding close distance, on the contrary, if the adhesive of the exterior wall silver land is used to match the indoor formaldehyde that happens to exceed the standard a lot, then the harm is great, and the decoration can be detected by their own living professional institutions.

When people decorate the house, they will carry out waterproof decoration on the indoor kitchen and bathroom, and the waterproofing of these two areas must be done, after all, the kitchen and bathroom often use water, so waterproof is very necessary, but many people want to know that the exterior wall needs to be waterproofed? Next, let's find out together!

The exterior wall must be waterproof, if the exterior wall is waterproof, the erosion of perennial rain will make the wall absorb a lot of water, and the water is gradually "soaking" the wall, in the water environment, and there is often sun exposure, the service life of building materials and decorative materials is greatly reduced, and people are in such a humid and evaporated environment for a long time, which is not good for health.

Exterior wall waterproofing construction steps.

1. Clean up the base layer, the old and new surface layers must be cleaned up, so as not to affect the bond strength, and the base layer should be dry when painting waterproof coatings. The second step, after the completion of the base cleaning process, next, clean up the dead corners, especially pay attention to the drain hole to strengthen the treatment, need to be painted 2-3 times waterproof base coating.

2. The waterproof coating must be proportioned in accordance with the instructions for use of the product, according to the ratio of a:b=2:1, the stirring time is about 3--5, and stir until the mixed liquid of the two components of A and B is uniform.

3. The waterproof coating that is stirred evenly will be painted according to the area to be painted on the site, and the base layer should be larger than the area of the adhesive coil, not more than 30. Before brushing the second coating, it is necessary to wait for the coating to be completely solidified before it can be painted again, and the bottom coating is about 4-8 after the completion of the painting, and the construction can only be carried out after the second coating is completely solidified when bonding the coil.

Conclusion: The above content is about the need for waterproofing of exterior walls? I hope it can help you. I believe that after the introduction of the content, you will have a better understanding of the exterior wall waterproof construction steps, and if there is a demand for decoration materials in the future, you can also refer to it.

Summary. It is best not to repeat, from the appearance and effect of the poor system is not big, but the exterior wall adhesive is mainly waterproof and ultraviolet, and other properties are no different from the interior; However, indoor adhesives have high requirements for the release of formaldehyde, and the national standard "Sanitary Standards for Formaldehyde in Indoor Air" stipulates that the maximum allowable concentration of formaldehyde in indoor air is milligrams of cubic meters, that is to say, once the formaldehyde release of indoor adhesives exceeds this standard, it is unqualified; At present, the country does not have a mandatory standard for exterior walls, that is, the formaldehyde release of the exterior wall will not form harmful pollution to the surrounding close distance, on the contrary, if the adhesive of the exterior wall is used indoors, formaldehyde happens to exceed the standard a lot, then the harm is great, and this decoration can be detected by their own living professional institutions.

2-5 cm, but it depends on the actual situation If the hole is more neat, you can reduce the point If the hole error is larger, of course, reduce the point more In addition, it depends on the overall effect If there are several doors and windows together, then it is necessary to make the same size, it is impossible to make a large and a small Even if it is more than the hole, you have to open the hole wider. Hope it helps.

It is best not to repeat, from the appearance and effect of the poor crack concealment is not big, but the exterior wall adhesive is mainly waterproof and ultraviolet rays, and other properties are no different from the interior; However, indoor adhesives have high requirements for the release of formaldehyde, and the national standard "Sanitary Standards for Formaldehyde in Indoor Air" stipulates that the maximum allowable concentration of formaldehyde in indoor air is milligrams of cubic meters, that is to say, once the indoor adhesive releases more than this standard, it is unqualified; At present, the country does not have a mandatory standard for the exterior wall, that is, the formaldehyde release of the exterior wall will not form a harmful pollution to the surrounding close distance, on the contrary, if the adhesive of the exterior wall is used indoors, the formaldehyde happens to exceed the standard a lot, then the source of chaos is extremely harmful, and this decoration can be tested by its own living professional institutions.

Mortar waterproofing agent construction steps:

Sweep the base surface clean;

2. Sprinkle water to moisten, and there shall be no stagnant water.

3.waterproofing agent, cement mixed into plain mortar, brushed on the wall.

4.After the surface of the plain mortar is dried for 20 minutes, there is a waterproofing agent, cement, and sand to stir into a mortar.

5.After construction, sprinkling and curing according to the weather conditions, and the place exposed to direct sunlight needs to be covered (depending on the change of weather, the world of sprinkling and curing is slightly different).

Exterior wall waterproofing practices:

1. It is not recommended to use waterproof coating, because the waterproof coating needs to be used as a protective layer after construction, and it is more troublesome to have one more process.

2. Waterproofing needs to be constructed on the cement base, if there are tiles, the tiles need to be removed and then constructed.

3. It is best to use mortar waterproofing agent (waterproofing agent used in cement river sand) for exterior wall waterproofing, which can form a whole with the original cement base surface after it is done, and will not be damaged by acid, alkali and other substances in the rainwater.

Do you need to do waterproofing for the exterior wall? After buying a house or building a house by themselves, many people know that places that are often in contact with water such as bathrooms and kitchens should be waterproof, if they don't do it, it will not only make the wall damp and affect their own living, but also lead to infiltration, affecting the living of the downstairs or next door residents, causing a lot of unnecessary trouble. However, does the exterior wall need to be waterproofed, the answer is yes, if the exterior wall is not waterproofed, once it encounters wet weather or rainy and snowy weather, there will be infiltration, resulting in indoor dampness, the wall falls off mildew, and the comfort of the house will have a great impact.

The production of waterproof walls is actually the best answer to the question of whether the exterior wall needs to be waterproofed. Many houses have been made of simple waterproofing when the construction party delivers the house, that is, the waterproof calendar is made of walls. Waterproof walls can help to block most water intrusion and prevent moisture in the room.

Waterproof wall is a big project when the house is renovated, if you buy a house that has been built, it is best to ask the construction party whether the exterior wall waterproof treatment has been done, if it is a self-built house, it is best to install the waterproof wall yourself.

There is no doubt that the exterior wall needs to be waterproofed. Then it is necessary to check whether the purchased house has been waterproofed, or whether it needs to be waterproofed again. You can check the wall first, see if the wall is complete, whether there is any falling off or cracks, and then see if it is sealed, and then check whether the waterproof wall is installed.

When you do the waterproof treatment yourself, you must make the waterproof strong to prevent unnecessary troubles such as falling off and cracking in the future.

The above is all the problems and precautions for the exterior wall to be waterproofed, if the hall is rotten and your house has not been waterproofed, then it is recommended to do it as soon as possible!

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