18-step construction process and acceptance criteria for interior wall paint

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1 Grassroots inspection, cleaning


Check the surface of the base layer for dust, oil, impurities, whether the base layer is firm and firm, whether the base layer has cracks, whether it is smooth, vertical, and whether it is dry.


2 Primary treatment


Qualified is that the grass-roots level is the guarantee of aesthetics and durability of the paint. It is a common disease to cause cracking of the putty layer and the paint layer due to grass-roots factors (such as cement mortar or wall cracking). The treatment of the base layer cracks with a bandage is a common method for interior wall finishing. If the original cover white wall surface uses inferior glue, it shall be reinforced with alkali-resistant primer, and the wall surface shall be powdered and shall be removed.


3 wooden board closed


Avoid board surface deformation and color transmission.


4 patch bandage


To ensure the smoothness and firmness of the interface around the seam is the key point of the seam. Paste two layers of bandages to reduce cracks in the paint layer.


5 Partial batch scraping


The grass-roots flatness is not enough, and it is necessary to grind and level the uneven parts first; but when the deviation of the grass-roots flatness exceeds 8mm, it cannot be super-thickened and leveled with a putty, and the cement mortar is used for leveling.


6 Grinding


Polish the putty to ensure that the grass is roughly flat.


7 The first full scraper


The construction strives not to leave the end without scratching and leaving no seam marks.


8 The second full scraper


PuTTY is generally scraped twice to survive, and each time PuTTY is not to be spaced too long, the putty thickness is 1~3mm.


9 Yin Yang corner straight


Ensure that the yin and yang angles are linear.


10 The third pass is full of scraping


When there is a high requirement for the smoothness of the wall surface, putty scraping can be increased again, but the thickness of the last batch scraping scraper should not be less than 0.8 mm.


11 Grinding


The paint has a high requirement for the flatness of the putty layer, and it should be polished and flattened, and the putty layer should not be too hard so as to prevent the putty layer from being too smooth after sanding, without fine sand marks, which is not conducive to the bite of the coating on the putty layer.


12 first pass primer


The function of the primer is alkali-resistant closure. Reinforced putty, covered with fine sand marks, so the first time the paint layer should try to get through the putty layer.


13 Refilling putty


The putty layer appears broken during grinding. When the sand hole is used, putty should be repaired after the first pass.


14 Grinding


After refilling the putty, it should leave a mark and should be polished to avoid affecting the integrity of the paint.


15 Second pass primer


In order to ensure the finish coating effect, the total thickness of the primer should be 30mm, and it should not be used to save labor and save the material only once.


16 Grinding


The leveling of the primer is not enough and should be polished on the top coat to ensure the smooth finish of the top coat.


17 first pass coating


The first pass of spraying or roller coating should be uniform, and it can't be used for one-time spraying. The roller is too thick and affects the adhesive force.


18 Second pass coating


The second time spray. After the roller coating should pay attention to maintenance, should not be strong ventilation, so as not to produce shrinkage force in the coating layer of ventilation, resulting in coating cracking.

Three trees paint plate coating cement paint

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