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When it comes to paint, it looks ordinary, it is not just a layer of things, no technical content. It’s not the case, because it looks the same, so you want to buy a good product. And specific to the construction process, it is much more stressful.
buy:
Buy the most heavy packaging: Lift the paint bucket and shake it. If there is a squeaky sound, it means that the packaging is seriously insufficient, the shortage is less than two, the viscosity is too low, the regular big factory is real, and the sound is almost impossible to hear. .
Make an estimate of the amount to be used: buy one foot at a time to avoid a slight color difference in the paint purchased.
Choose the same brand: Primer and topcoat should use the same brand or matching paint to prevent chemical reaction between primer and topcoat.
Construction sequence:
1. Remove dust and dirt from wood products and lines (wood base).
2. Trim the defects such as burrs and crepe on the surface of the wood base layer, and polish them with sand to make the corners neat.
3. Use oily putty (or transparent putty) to scrape, polish, and replenish the putty and polish it. (When using varnish, first make up brown eyes, nail holes, and do partial color repair work).
4. Apply the first coat of paint, make up the putty, and remove the surface dust after polishing.
5. Apply the second coat of paint, remove the surface dust after polishing, and grind the water with water and sand to repair the part of the oil.
6. Apply the third coat until the desired result is achieved.
Construction methods : brush, roller and spray each have their own length and should be taken as needed.
Roller coating is suitable for large-area construction, and the efficiency is higher than that of brushing, but there will be a fish skin effect like a pockmark. This method of construction is unpopular for those who do not like jade. Moreover, roller coating costs nearly 20% more material than brushing, artificially increasing the cost.
The brushing method is a manual painting method, which is a commonly used construction method. The advantages of the brushing method are saving paint, simple tools, convenient construction, easy to grasp, strong flexibility and adaptability to paint varieties, and can be used for general paints.
However, the disadvantage of the brushing method is that the manual operation has high labor intensity and low efficiency, and is not suitable for quick-drying paint. If the operation is unskilled and the movement is not agile, the paint film may have defects of brush marks, sag, uneven brushing. .
There are two types of spraying, one is air spraying and the other is high pressure airless spraying.
Air spray will leave a lot of air bubbles on the wall. Although the construction speed is fast, the effect will be very poor. It is not recommended for indoor use.
High-pressure airless spraying has just begun to become popular in China in recent years, but in foreign countries, high-pressure airless spray interior and exterior latex paints have long been widely used. The specific construction method is to use a special high-pressure airless spraying machine to deliver the high-pressure paint to the spray gun through the high-pressure hose, and release the pressure through the spray gun to form atomization, thereby forming a smooth and dense coating on the surface of the wall.
Identify construction quality tips
The easiest and most practical way is to use a flashlight to illuminate the wall. Under the strong flat light, any cracks and unevenness can be seen at a glance.
Brush paint notes:
1. Wall patch: In order to prevent cracks on the wall surface, the non-bearing wall must be patched.
2, wall lining: wall lining is a substitute for 821 putty, is the material that must be used on the wall base.
3, the primer: the primer has a moisture-proof, anti-mildew effect, must first brush the primer, after the brush finish.
4. Color: When selecting the color of the paint according to the color card of the building materials market, it is best to choose the color that is lighter than the color card. The actual brushing effect is the effect you want.
5, spraying: the effect of spraying, better than the worker's hand brush, but more expensive materials.
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