Analysis of the cause of rain marks in real stone paint

When the cold tide hits, most areas will soon suffer from low temperature rain and snow weather, and under the brushing of rain and snow, latex paint and texture paint appearance will form vertical strip-like rain marks, forming an uneased appearance of the film or whitening phenomenon. The editor-in-chief today to analyze the reasons for the rain marks in the real stone paint.
01
paint film drying
paint film problems, the general customer will feel the first time emulsion problems, and the construction time is 3-4 days in the future, the coating film is now dull appearance

. The cause of this problem, involving the dry time of painting, the problem of film-forming time affected by low temperature, and the problem of long-term immersion of rain, resulting in flushing marks.
02
formula ratio
to adjust the formula unreasonable, whether the content of emulsion in the formula meets the package requirements for powder, whether to meet certain wash-resistant brushing standards; (The emulsion content is too low for the paint film resistance will be greatly reduced, the alkaline resistance to the substrate will also be reduced).) For this, the choice of DeWitt real stone paint customers need not worry, the real stone paint by professional research and development personnel strictly control product quality, formula science and precision, emulsion content is sufficient.
03
Construction process
whether to paint anti-alkali closed primer, anti-alkali closed primer is painted evenly, whether it is completely dry and then painted these will affect the effect of the follow-up real stone paint, such as not up to the reinforcement of the substrate and alkaline closure, it is very easy to rain marks after the rain phenomenon. Part of the construction staff in order to save construction costs, paint paint once again painted into life, its own paint film thickness is insufficient (to achieve resistance to ordinary paint thickness should be about 90-120 microns for dry film as well), the overall resistance will be reduced accordingly, prone to rain after the phenomenon of rain marks.
04
scase
part of the wall cracking, wall after rain or permeable moisture, the new wall has not been maintained period of high alkali content, daughter wall or wall skirt and other places of construction, are prone to rain marks phenomenon.
construction proposition:
1, pay attention to the construction of the underlying conditions, construction environment and construction technology.
2, pay attention to control the paint boring time, to prevent pre-rain construction.
3, the northern region of the minimum temperature between 5-10 degrees Celsius weather, paint construction as far as possible in the 10 a.m. - 16 p.m., the temperature is too low construction will produce paint film cracking.
4, pay close attention to weather changes, rainy days should be suspended construction. After the rain on the substrate moisture content test, qualified to carry out paint construction, to prevent the production of paint film foaming.
5, often test the surface temperature of the substrate and air relative humidity, the base temperature is less than 5 degrees C or air relative humidity is higher than 85% should be suspended construction.
6, the base boring period, in case of rain, should adopt the necessary cover measures.
7, do a good job of product, semi-product protection. In case of rain or dust, the necessary cover protection measures should also be taken.
8, the environment relative humidity is large, water-based paint boring into a film is slow, should be appropriately extended the paint re-painting distance time, thin coating products are generally re-coated the next day, elastic mid-layer paint, embossed bone pulp, texture paint and real stone paint and other thick coatings generally from more than 2 days re-coated.
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