Paint knowledge | paint peeling, paint tarnish how to do?

Core tip: paint is an important part of interior decoration, which is prone to some thorny problems In fact, as long as we find out the real cause of the problem and take the right medicine, we will have satisfactory results What about the paint peeling and tarnishing? I'll give you some advice The paint peeling may be caused by the too smooth surface If the original paint is glossy or powdery (with untreated paste paint), the new paint will not stick firmly on the surface Or it may be rotten wood or rusty metal, or peeling due to poor paint quality If the paint in a small area peels off, it can be polished with fine sandpaper and then applied 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 an important part of interior decoration, prone to some thorny problems, people helpless In fact, as long as we find out the real cause of the problem and take the right medicine, we will have satisfactory results What about the paint peeling and tarnishing? I'll give you some advice The paint peeling may be caused by the too smooth surface If the original paint is glossy or powdery (with untreated paste paint), the new paint will not stick firmly on the surface Or it may be rotten wood or rusty metal, or peeling due to poor paint quality In case of peeling off of small area of paint, first polish with fine sandpaper, then apply putty, brush primer, and then paint again The paint must be scraped off and repainted in case of large area peeling If the paint blisters, first of all, puncture the blister If there is water coming out, it means that there is moisture under or behind the paint layer After the sun, the water evaporates into steam, and the paint skin will be blistered At this time, first use the hot air gun to remove the foaming paint, let the wood dry naturally, then brush the primer, and finally paint the whole repair surface again If there is no water in the bubble, it may be wood grain cracking There is a small amount of air in the bubble When the air expands in the sun, the paint will bulge In the face of this situation, first scrape off the blistering paint skin, then fill the cracks with resin filler, paint again, or without filler, after scraping off the paint skin, directly apply microporous paint In case of cracks, chemical paint remover or hot air spray gun shall be used to remove the paint and then paint again If the fracture range is not large, at this time, it can be moistened with sand grinding block or dry and wet sandpaper to remove the broken paint After the surface is polished smooth, apply putty, brush primer and paint again There are many reasons for stains on the paint surface For example: the water in the emulsion paint dissolves the substance on the wall and rusts the paint surface, the wall surface rubbed with steel wool will produce rust spots, and the leakage of concealed pipes in the wall will produce stains, etc In order to prevent stains, a layer of primer containing aluminum powder can be brushed first If there are stains, the latex paint at the spots can be removed first After brushing the primer containing aluminum powder, paint again The reason for the loss of luster is that the primer is not applied, or the primer and inner layer paint are directly applied with varnish before they are dry As a result, the varnish is absorbed by wood and loses luster The poor quality of varnish is also a reason Use dry and wet sandpaper to grind off the old paint, brush off the dust, clean the surface with a clean and wet cloth, and then brush the paint again after it is completely dry Special attention should be paid to the fact that when the paint is applied in a low temperature environment, the paint film may lose luster after drying The surface of a new paint is rough, usually because the brush is not clean or polluted by the surrounding environment It may also be that the paint is mixed with paint skin, which has not been precipitated and filtered before use, or the paint has been stained with dust when it is not dry In order to prevent the above problems, clean paint brush and paint barrel must be used Before using the old paint, be sure to filter it with paint filter paper or clean nylon stockings In addition, the painted surface should be covered with a cover or cardboard when the paint is not dry to prevent dust If the paint surface is rough, after it is completely dry, polish it with dry and wet sandpaper, wipe it clean, and then brush the paint again Pay special attention to that the paint brush must be clean If the paint is not dry, the indoor ventilation is not good or the temperature is too low, the paint will dry slowly This is to open all doors and windows to promote ventilation, or put a heater in the room to increase the room temperature If it still fails to solve the problem, it may be that the painted surface is greasy The paint can be removed by chemical paint remover or heating method, and the surface can be completely wiped clean before repainting Stick the bug on the paint surface and try to remove the bug while the paint is not dry, and then touch up the surface with a little oil with a brush If the paint is starting to dry, wait for the film to harden completely, and then wipe off the bug, so as not to mess up the surface The related problems of paint peeling and tarnishing are introduced here I hope it can help you! 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