1) Grassroots treatment
The wall takes some time to maintain before the base surface is treated. Before putting the putty, thoroughly remove the loose, peeling, empty, powdered base layer, and then remove dust, oil and other pollutants. Use the outer wall putty to repair the wall surface, the first part is leveled, fill the large holes and gaps with putty or filling glue. After the putty is dried, it is partially polished, and then putty putty to make the base layer smooth. After the putty is completely dried, it is ground to smooth the base layer. The relief layer itself is in a concave-convex state, and the flatness of the base layer is required to be relatively low in the flat coating process, which can reduce the number of passes and the degree of fineness of the polishing. The external wall putty is a cement system and needs to be cured. The general curing time is 14 days. After the PH value is less than 10 and the water content is less than 10%, the next process can be carried out.
2) Batch shaving Malay paint
Generally, it is applied by scraping (smearing) or spraying. Scratch coating (smear) construction is to use a steel trowel to evenly apply the paint to the strong surface, scrape back and forth, scrape out various shapes, or use special construction tools to create different shapes. According to the requirements of construction modeling, attention should be paid to controlling the construction viscosity, air pressure, nozzle size and distance during spraying. Construction should be stopped in the event of windy weather.
3) Cover treatment
Some three-dimensional coatings require a layer of varnish to form a protective layer to further enhance the decorative effect of the three-dimensional coating. The varnish should be sprayed evenly, and there should be no leakage or sag. Construction measures are taken.
Precautions
(1) The label should be carefully mixed before use, and the lid must be tightly covered after use.
(2) The storage and construction of the paint should conform to the temperature conditions of the new product specification ingot. It should normally be above 5 °C. If the paint is frozen during storage and transportation, it should be placed in a room with a higher temperature and allowed to thaw naturally. grilled. The thawed paint is confirmed to have no qualitative change before it can be used.
(3) Coating coloring is best done by the manufacturer or distributor. To ensure the consistency of the color of the batch of paint. If you need to color the interview at the construction site, you must use the manufacturer's matching or designated grades, the color paste of the place of origin. According to the requirements and proportions of use. It is prepared by a special person.
(4) Some polyurethane coatings contain more free toluene diisocyanate. In the volatilization process of the coating, the latex paint will be yellowed, and the polyurethane and latex paint should be avoided at the same time. It is best to completely dry the latex paint in the polyurethane paint.
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