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    Home > Coatings News > Paints and Coatings Market > Paint knowledge: what is the reason for the small pit on the wall after painting?

    Paint knowledge: what is the reason for the small pit on the wall after painting?

    • Last Update: 2020-04-03
    • Source: Internet
    • Author: User
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    Core tip: Readers: after painting the wall at home, there are small holes, but the wall surface is very smooth after polishing The holes are only after painting Is it related to the quality of the paint? There is no relationship between the small holes on the wall surface and the paint, which is mainly caused by the poor treatment of the wall base layer Many owners think that all kinds of small pits on the wall can be made up after painting In fact, even if the first primer and the second finishing coat are all painted, the thickness of the coating is less than 2mm, which is not enough to make up for covering the small pits There are two main reasons for the small pit on the wall The last layer of the wall base is putty, and there will be particles when the putty is mixed unevenly Paint knowledge | precautions for wall paint color selection Recommended introduction: when painting the wall, the owner sometimes has difficulty in choosing what color of the wall paint to paint In fact, there is no ugly color in the wall paint, only the disharmonious color matching The use of wall color contains the knowledge of health Too strong color will stimulate people's perception, make people have a sense of fidgety, affect people's mental health Grasp the basic principles of wall color and paint a colorful space 1、 Wall paint color selection notice 1 Light color is generally used for the top surface Light colors make people feel light, dark colors make people feel heavy Usually, the treatment of rooms is from top to bottom, from shallow to deep For example, the ceiling and walls of rooms are white and Home of paint news: Reader: the wall at home appears small potholes after painting, but the wall surface is very smooth after polishing Potholes appear after painting Is this related to the quality of paint? There is no relationship between the small potholes on the wall surface and the paint, which is mainly caused by the poor treatment of the wall base Many owners think that all kinds of small pits on the wall can be made up after painting In fact, even if the first primer and the second finishing coat are all painted, the thickness of the coating is less than 2mm, which is not enough to make up for covering the small pits There are two main reasons for small pits on the wall surface The last layer of the wall base is putty, and there will be particles when the putty is mixed unevenly These particles will fall off when polishing in the later stage, resulting in small pits In addition, due to the characteristics of putty itself, gas will be generated after mixing with water, so the putty after mixing should be left for about half an hour to fully generate the gas, and then stir to release these gases If it is used directly without standing after mixing, the generated gas will eject a small bubble inside the wall, and when it is polished in the later stage, a small pit will appear when the bubble breaks For either reason, these pits cannot be observed after grinding, because a large amount of grinding dust is filled in them Only after the wall is cleaned and the first coat of primer is applied can it appear Therefore, the experienced oil union will find out the places with pits after brushing the primer, then mix the putty with the primer, fill these pits, polish and level them after drying out, and then continue to brush two coats of finish paint As for whether there are small pits on the wall is unqualified, there are relevant standards and specifications in the industry Due to the inevitability of materials and the difference between the accuracy of construction, for ordinary decoration, it is required to stand 1.5m away from the wall and look horizontally, if there is no obvious pit, it is qualified; if it is a house with fine decoration, it is required to stand 1m away from the wall and look horizontally, if there is no obvious pit, it is qualified Concerned about the WeChat official account, "paint net" There are some surprises to be observed If the swallow and the Wu Mei Niang sell paint, what will happen? (92525666) the paint house is a news and paint, diatom mud, paint and coating technology, which focuses on coatings, diatom mud, paint and coatings, coating technology, fireproofing materials Decoration knowledge and effect drawing of fireproof coating,
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