Wall construction 𞓜 8 common problems of paint, find out the "root cause" and solve it in time

Core tip: paint is generally used in home decoration The effect of paint is not only to beautify the room, but also to prevent corrosion and water, just like a beautiful protective film on the wall However, after painting, there are still some problems, such as peeling off of wall paint, blistering of paint, etc we need to find the "root cause" in time The following is a list of 8 common problems of paint, and introduces solutions Let's learn about them Problem 1: various peeling phenomena of paint: paint peeling is caused by various factors, one of which is that the wall is too smooth If the original coating is glossy or powdery (with untreated paste coating added), the new one 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 Paint Home News: paint is generally used in home decoration The effect of paint is not only to beautify the room, but also to prevent corrosion and water, just like a beautiful protective film on the wall However, after painting, there are still some problems, such as peeling off of wall paint, blistering of paint, etc we need to find the "root cause" in time The following is a list of 8 common problems of paint, and introduces solutions Let's learn about them Problem 1: various peeling phenomena of paint: paint peeling is caused by various factors, one of which is that the wall is too smooth If the original paint is glossy or powdery (with untreated paste paint), the new paint will not stick Another reason is that the wood is rotten or the metal is rusty, and then there is the peeling caused by the quality of the paint itself Solution: if it is only a small area of paint peeling, you can first use sandpaper for grinding, then apply putty, brush primer, and then paint again If a large area of paint peels off, it is necessary to scrape off the paint and then brush again Problem 2: all kinds of blistering phenomena of paint: prick the paint blister and observe to analyze the cause of blistering If there is water coming out after pricking, it means that there is moisture under or behind the paint layer, which evaporates under the sun to form steam, and then the paint skin will be jacked up and blistered However, if there is no water emerging after the puncture, it may be caused by the cracking of wood grain There is a small amount of air inside Once the air is swelled in the sun, the paint skin will blister Solution: in the first case, the foaming paint can be removed with a hot air spray gun to make the wood dry naturally, then the primer is applied, and finally the whole repair surface is repainted In the case of no water, the blistered paint skin can be scraped off first, and then the cracks are filled with resin filler The paint can be repainted or no filler is needed After the paint skin is scraped off, the microporous paint can be applied directly Problem 3: paint stains: there are many reasons for paint stains For example, the water in emulsion paint will melt the substances on the wall and rust the paint surface The steel wire brushed wall will produce rust spots, and the leakage of wall concealed pipes will also produce stains Methods: in order to prevent paint stains, you can brush a layer of primer containing aluminum powder first If there are stains, you can remove the latex paint at the spots first, and then brush a layer of primer containing aluminum powder before applying a new paint Problem 4: paint cracks: small cracks appear on the paint surface, mostly due to the use of incompatible paint, the expansion coefficient between the upper layer and the lower layer Solution: it needs to use chemical paint remover or hot air gun to remove the paint and then brush the new paint again If the paint surface is not very broken, you can use abrasive block or dry and wet sandpaper to wipe the broken paint with water After the paint surface is polished smooth, apply putty, brush the primer and paint again Problem 5: there are dark spots on the surface of painted wood: most of these problems are caused by the fact that the wood joint is not sealed before painting, and the resin seeps out from the wood joint as soon as the sun shines Solution: scrape off the paint with a scraper, polish it with fine sandpaper until the wood joint is exposed, then seal the wood joint with sealing paint, and paint again when it is completely dry Problem 6: paint surface loss of luster: it may be due to the lack of primer, or the primer and inner layer paint have been coated with gloss paint before they are completely dry, resulting in the gloss paint being absorbed by wood and no gloss In addition, it may also be due to the poor quality of varnish Solution: use dry and wet sandpaper to polish off the old paint, brush off the dust, and wipe the surface with a clean wet cloth, and then paint again when the water is dry It should be noted that when painting in low temperature environment, the paint film may lose luster once it is dry Problem 7: rough and unsmooth paint: the new painted wall is not smooth, usually because the paint brush used is not clean or affected by the surrounding environment pollution It may also be because the paint contains paint skin, which has not been precipitated or filtered before use, or the paint has been stained with dust before it is dry Solution: in order to avoid this kind of problem, it is necessary to use the feeling paint brush and paint barrel Before using the old paint, it needs to use the paint filter paper or clean nylon screen to filter In addition, when the paint is not dry, the surface needs to be covered by a cover or cardboard to avoid dust If the paint surface is rough, after natural drying, use dry and wet sandpaper to polish it smooth, wipe it clean and then brush the paint It should be noted that the paint brush must be clean Problem 8: wrinkles appear in the paint film If the paint is not dry for the first time, it will be brushed for the second time, which often causes wrinkles in the paint film At this time, the solvent in the lower paint will affect the upper paint film, resulting in wrinkles Solution: you can use chemical remover or heating method to remove wrinkled paint film, and then brush new paint again It should be noted that the second coat can only be applied after the first coat is completely dry If there are several problems described above in your home paint, you may as well try it For example, what kind of wall paint falls off, blisters and so on, you don't need to worry too much, just find out the reason and solve it Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,