Paint peeling: It may be due to the fact that the surface is too smooth. If the original paint is glossy paint or is powdery (with untreated paste paint), the new paint will not stick to the surface. Or it may be wood decay or metal rust, or peeling off due to poor paint quality. A small area of ​​paint is peeling off, which can be ground with a piece of fine paper, then putty put on it, brushed with a primer and repainted. Large areas of peeling must be stripped of paint and repainted.
Foaming of paint: First, the foam is punctured. If water appears, it means that moisture penetrates underneath or behind the lacquer layer. When the sun shines and moisture evaporates into steam, the paint is lifted up into foam. At this point, the starting paint was removed with a hot air gun, the wood was allowed to dry naturally, then the primer was applied, and finally the entire repair surface was repainted. If there is no water in the bubble, it may be cracked wood grain, there is a small amount of air, the sun through the sun, the air expands, the paint bulge. Faced with this situation, first scrape off the blistering paint, then use a resin filler to fill in the cracks, repaint it, or use no filler. Apply a microporous paint directly after scraping the paint.
Cracks appear: In most cases, the paint must be removed with a chemical paint remover or hot air gun, and then repainted. If the fracture range is not large, then sanding blocks or wet or dry sandpaper can be used to dilute the broken paint. After the surface has been smoothed, apply putty, apply a primer, and repaint.
Flow of paint: paint is too thick at once, which can cause runny. The paint can not yet dry, brush the paint to open. If the paint has started to dry out, wait for it to dry. Smooth the surface of the paint with a piece of shredded paper, wipe the surface clean, wipe it off with a damp cloth, and then re-apply the paint on the outside. Be careful not to brush too thick.
Moldy discoloration: This problem occurs most often on wet paint surfaces, such as when water vapor condenses on glass and metal surfaces. Brown-black stains often occur. At this point can be used fungicides, according to the instructions of the instructions to deal with moldy parts, to be killed after the mold, the surface clean and then re-paint.
Stain: There are many causes of stain on the paint surface. For example, the water in the latex paint dissolves the material on the wall and the paint is rusted. The wall surface that is rubbed with the steel wool can cause rust. Dark pipe leaks in the wall appear stains. To prevent blemishes, a layer of primer containing aluminum powder may be applied first. If stains are already present, remove the emulsion paint from the blemishes, brush the primer containing aluminum powder, and then re-paint. j$vht*[ ] ?2J
Lost gloss: The reason is that the primer is not applied, or the primer and the inner layer of paint are not dry, and the gloss paint is directly applied. As a result, the glossy paint is absorbed by the wood and loses its luster. The bad paint is one reason. Grind the old paint with wet or dry sandpaper, brush the dust, wipe the surface with a clean, damp cloth, and dry the paint again. Special attention should be paid to the fact that if the paint is applied under very low temperatures, the paint film may lose its luster after drying.
The wrinkling of the paint film is usually caused by the second pass of the paint after the first pass. At this time, the solvent in the lower layer paint will affect the upper layer of the film to make it wrinkle. In this case, the wrinkled paint film can be removed by chemical amalgamation or heating and repainted. Remember, we must wait for the first time before we can paint on the second pass.
Paint finish rough: The newly painted surface is rough, usually the paint brush used is not clean or contaminated by the surrounding environment. It is also possible that the paint is mixed with patent leather. It is not precipitated or filtered before use, or it is dusted when the paint is dry. In order to prevent these problems from occurring, clean paint brushes and paint buckets must be used. Old paint must be filtered with paint filter paper or clean nylon stockings before use. Coatings | Inks | Resins | Adhesives | Formulas
In addition, the painted surface should be covered with a cover or cardboard when the paint is dry to prevent dusting. If the paint is rough, after it has dried, use a wet or dry sandpaper to polish it and clean it, then repaint it. Pay special attention to the paint brush must be clean.
Paint does not dry: poor indoor ventilation or low temperature, the paint will dry slowly. At this time, all doors and windows can be opened to promote ventilation, or put a heater in the room to increase the room temperature. If this does not solve the problem, the painted surface may be greasy. At this point, remove paint with chemical paint remover or heat, wipe the surface thoroughly and repaint it.
Construction Acceptance Paint Paint Lacquer Glass Window Glass Door
Putian Integrated Housing Co., Ltd. , http://www.zjprefabhouse.com