As a coating person, to have a solid coating knowledge is to respect the industry, but also responsible for their own work. So the question is, do you have enough knowledge? How many more questions can you answer?
Can interior wall coating be used for exterior wall?
The difference between interior wall coating and exterior wall coating is that they have different weather resistance. Generally, due to environmental reasons, exterior wall coating has higher requirements on water resistance, alkali resistance, UV resistance, frost resistance, fade resistance, pollution resistance, etc., so the requirements of raw materials selected in the formulation of exterior wall coating are higher than those of interior wall coating. We also take Chenguang advanced water-based exterior wall paint chg-f117 as an example. It has excellent mildew resistance, algae resistance, powdering resistance, acid-base resistance, washability and color retention, smooth surface, strong stain resistance and super weather resistance. The environment experienced by interior wall coating is more moderate than that of exterior wall, and the requirement of weather resistance is lower, so interior wall coating cannot be used for exterior wall.
What are the requirements for wall humidity and maintenance period before painting?
1. The wet wall will affect the adhesion of the paint surface, cause the paint surface to blister, crack, fade and promote the growth of mold, and in the process of water evaporation and drying, it will make the wall salt and alkali exude and accumulate on the surface, it will damage the paint surface and make the color fade, so the wall humidity before construction is limited to less than 6%. 2. There shall be a curing period of at least 28 days after the cement wall is formed and plastered, so as to make the cement completely solidified, the size stable and the alkali of the wall seep out, and then brush after cleaning. Why surface treatment?
No matter how high-quality the coating is, if there is not enough and proper surface treatment in advance, the obtained coating surface will not be perfect in performance and benefit. The surface treatment varies according to the substrate, but the purpose is the same, that is to give dry and stable substrate.
Why should paint be applied more than twice?
Two coats of water-based interior wall coating are mainly applied to achieve its proper covering power and coating surface performance. The covering power and surface performance of the coating have a certain relationship with the thickness of the coating surface. In order to achieve the best decoration and protection effect, the waterborne interior wall coating is best brushed twice. In order to prevent the hollowing and falling off of tiles, we suggest to brush a layer of paint on the wall and the back of tiles, so as to obtain stronger adhesive force.
How long is the interval between two coats of paint?
The interval between two coats of paint shall be determined according to the specific construction conditions. Ensure that the first time is completely dry, and then brush the second time. If the surface of some coatings is dry, the second time will be extended. The morning light dazzles the color full effect clean taste interior wall environmental protection emulsion paint, touch the drying table to dry for 1 hour, dry for 2 hours, under normal conditions, the interval of each time is at least 2 hours to dry; the recoating time is 2-4 hours (under the temperature of 23 ℃ and the relative humidity of 50%).
Is the effect of applying a thick layer the same as that of applying two thin layers?
Interior wall coating is generally applied twice (under normal dilution), too thick coating will cause paint surface cracking; although the condition of thicker coating surface is considered in formula design, it does not mean that interior wall coating can be applied multiple times when it is excessively diluted, because excessive dilution of interior wall coating will cause paint surface pulverization.
How long does it take to apply the art paint after applying the putty?
There are many putty suitable for building walls, mainly including water-based putty and nitro putty; if it is water-based putty, it should be painted after 24 hours, if it is nitro putty, it should be painted after 5 hours, the most important thing is to paint art paint after the putty is dry, otherwise the paint surface is easy to bubble and peel. How to deal with the old wall repainting?
If the old wall is solid and the wall alkali is not serious, it can be painted directly after cleaning the wall. If the coating surface is loose and the surface is not smooth after shoveling, it is necessary to apply putty again, and brush the surface again with primer.
Statement: this platform only provides sharing and communication, not for commercial use. Please contact us to delete the infringement in time! END
?----------------------------------------
Wonderful past review once you have been a painter, your life has really changed
The putty is completely scraped and the wall is full of bubbles. Finally, I know how to deal with them! It's super simple without shoveling the wall
If Ma Yun chose to dry the paint, he might be like this today
It's not too late for painters whose wages are less than 15000
"Read the original text" to view the recruitment information of free painters