Paint knowledge: overall strategy of paint and coating selection and decoration construction

Core tip: when it comes to coating, it looks very common at first It's just to apply a layer of things There's no technical content In fact, it is not because it looks the same, so we should pay more attention to the purchase of good products And specific to the construction link, but also a great stress Buy: buy the heaviest package: lift up the paint bucket and shake it If there is a loud noise, it means that the package is seriously insufficient, short of weight and low viscosity The real materials of regular large factories can hardly be heard in a flash It is necessary to make an estimate of the amount of paint to be used: purchase enough at one time to avoid slight color difference of the coatings purchased successively Select the same brand: primer and 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: when it comes to paint, it seems very common at first sight It's just to paint a layer of things There's no technical content In fact, it is not because it looks the same, so we should pay more attention to the purchase of good products And specific to the construction link, but also a great stress Buy: buy the heaviest package: lift up the paint bucket and shake it If there is a loud noise, it means that the package is seriously insufficient, short of weight and low viscosity The real materials of regular large factories can hardly be heard in a flash It is necessary to make an estimate of the amount of paint to be used: purchase enough at one time to avoid slight color difference of the coatings purchased successively Select the same brand: it is better to select the same brand or matching paint for primer and finish to prevent chemical reaction between primer and finish Construction sequence: 1 Remove dust and dirt on the surface of wood products and lines (wood base) 2 Finish the burr, fork and other defects on the surface of wood base, and polish with sand to make the corners neat 3 Scrape, polish, repair putty with oily putty (or transparent putty) and then polish (fill Brown hole and nail hole first when varnish is used, and do local color repair work) 4 Apply the first coat of paint, repair the putty, and remove the dust on the surface after polishing 5 Apply the second coat of paint, remove the dust on the surface after polishing, conduct water grinding with sand skin, and repair the oil hanging part Apply the third coat of paint until the desired effect is achieved Construction method: brush coating, roll coating and spray coating have their own length, and they should take their own needs Roll coating is suitable for large-area construction, and its efficiency is higher than brush coating, but the effect of fish skin like pockmarks will appear This kind of construction method is not popular for those who don't like noodles Moreover, roller coating costs nearly 20% more than brush coating, which artificially increases the cost Brush painting method is a kind of construction method which is commonly used The advantages of brush coating method are saving paint, simple tools, convenient construction, easy to master, strong flexibility and adaptability to paint varieties, which can be used for general paint However, the disadvantage of brush coating method is that manual operation has high labor intensity and low efficiency, so it is not suitable for fast drying paint If the operation is not skilled and the action is not agile, the paint film will have defects of brush marks, sagging and uneven painting There are two kinds of spraying, one is air spraying, the other is high pressure airless spraying Air spray will leave many bubbles on the wall Although the construction speed is fast, the effect will be very poor It is not recommended to use it indoors High pressure airless spraying has just become popular in China, but in foreign countries, high pressure airless spraying has been widely used for interior and exterior wall emulsion paint The specific construction method is to use a special high-pressure airless spraying machine to transfer the high-pressure paint to the spray gun through a high-pressure hose, and release the pressure through the spray gun to form atomization, so as to form a smooth and dense coating on the wall surface The simplest and practical way to identify the construction quality is to shine a flashlight along the wall Under the strong flat light, any cracks and unevenness can be seen at a glance Precautions for painting and coating: 1 Wall covering: in order to prevent wall cracks, non load bearing walls must be covered 2 Wall lining: wall lining is an alternative product of 821 putty and a necessary material for wall base 3 Primer: the primer has the function of moisture-proof and mildew proof It must be applied with primer first and then with top coat 4 Color: when choosing the paint color according to the color card in the building materials market, it is better to choose a lighter color than the color card The actual effect of painting is the effect you want 5 Spraying: the effect of spraying is better than that of hand brush, but it costs more materials Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating 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