Waterproof refers to that water will not penetrate after painting, and professional waterproof coating should be selected for waterproofing.
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Water-resistant putty is because of its high bonding strength, the internal structure will not be damaged after immersion, and the strength can still be restored after drying.
In order to save the decoration cost but not the bonding strength, many owners or decoration workers will choose to apply a layer of water-resistant putty and then apply a layer of universal putty to achieve the water-resistant effect.
Because the color paint is sensitive to the alkaline base, it is necessary to apply two coats of alkali resistant primer before applying the color wall paint to avoid the phenomenon of color paint blossoming, at the same time, it can improve the fullness of the paint film, reduce the consumption of the wall paint, and also carry out alkali resistant treatment in advance for the construction of other wall finishing materials sensitive to the alkaline base.
Generally speaking, the common putty is Y-type, and the water-resistant putty is n-type.
Then the responsibility is attributed to water-resistant putty.
The water-resistant putty powder is strong alkaline, and the additives in the general putty will be damaged by the strong alkalinity in the water-resistant putty, resulting in hidden dangers such as hollowing and falling off of the wall in the future.
However, the mixing of the two products will produce chemical reaction, because the strength and structure of the two products are different, even the two products of the same brand will not work.
Many owners directly paint beautiful wall paint after applying water-resistant putty in batches during decoration, resulting in uneven color of the wall and “paint” phenomenon.
Water-resistant putty is a strong alkaline product.
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There are three major mistakes in the construction of water-resistant putty ▽ Mistake 1: water-resistant putty can be waterproof, water-resistant putty with high strength and is not easy to pulverize, but it is also water-resistant, not waterproof.
Some of the new wall decoration materials belong to acid coatings, which react with water-resistant putty, a strong alkali material, and thus produce the phenomenon of “painted paint”.
Mistake 2: It is easy to “paint” with water-resistant putty.
The handle of water-resistant putty is better than that of ordinary putty: after construction, the water-resistant putty has smooth and fine surface, strong adhesion, high bonding strength, certain toughness, and good ventilation, so it is very suitable for decoration.
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Water-resistant putty for interior wall is a kind of base material for wall repair and leveling, which lays a good foundation for the next decorative coating.