But after so many times of construction, water-based paint is still not as good as oily paint in effect and performance.
1, base surface treatment and requirements: the wall and cement mortar wall should be fully cured and dried, usually more than 4 weeks in summer, and the winter time should be doubled to make the water and alkali in the wall fully precipitate, the water content is below 10%, and the PH value of the wall is
The wall should be clean, dust-free, scar-free, oil-free and mildew-free; If there are cracks, they should be treated first. For large cracks, they should be cut and filled with putty, and small cracks should be closed with putty. According to the wall conditions and the owner's decoration design requirements, determine whether the wall surface needs to be scraped and leveled; Under normal circumstances, the flatness of the wall surface reaches 2-3mm/2m, which can be directly painted. If you have higher requirements, you should scrape the putty on the outer wall.
For the painting of imitation aluminum plate, considering the flatness and crack resistance, it is necessary to scrape anti-crack putty until the flatness reaches 1mm/2m, which achieves the effect of aluminum plate.
2. Construction of Waterborne Fluorocarbon Coatings
Description of surface treatment of base course: In order to achieve flat coating effect, water-based sealing primer (white) can be directly painted after surface treatment of base course; For the painting of the relief texture effect, firstly coat the aggregate with napping or bullets to make the corresponding effect, and then coat the water-based sealing primer (white);
3. Painting instructions: Waterborne fluorocarbon coatings can be painted after the primer is painted for 6 hours at room temperature. Generally brush twice, with an interval of more than 6 hours.
Matters needing attention in the construction of waterborne fluorocarbon paint:
According to the field situation, add no more than 10% water to adjust the viscosity; Brush evenly every time, not too thick, no brush marks, and uniform color; It is suggested to spray water-based fluorocarbon metallic paint, which is similar to aluminum plate. It is not allowed to add water or very little water. Pay attention to protection when spraying to prevent paint mist pollution from affecting the decorative effect.