Winter paint construction should pay attention to indoor and outdoor temperature difference
The cold weather in winter is not suitable for renovation. If it is interior decoration, there is not much problem, such as paint construction, it is easy to meet the requirements in the summer and fall seasons, and in the winter it will be less of an annoyance. However, attention should also be paid to the fact that the weather is too cold and the thermal expansion and contraction effect caused by the large temperature difference between indoor and outdoor.
Nippon Paint Dulux
First of all, in the winter, the putty on the wall surface can be quickly solidified to reduce chalking and cracking, and the drying time of the paint can also be accelerated and the filming effect is good. Second, it facilitates the rapid volatilization of formaldehyde and reduces the residual amount of toxic substances in the decoration materials. However, it should be noted that during the winter paint coating application, the room temperature is generally not lower than 10°C. As long as attention is paid to temperature, ventilation, and the use of supplementary materials, the quality of the paint, the quality of the coating, and the time it takes to maintain the original appearance can be guaranteed. In order to ensure the volatilization of the harmful substances and the drying of the paint surface, it is necessary to open the window quickly after brushing the paint, but it is also necessary to prevent outdoor dust from contaminating the painted surface.
In winter, the outdoor temperature is low, and the window is conducive to the volatilization and drying of indoor formaldehyde and other harmful substances and paint products, but it may cause the paint to become powdery or even deteriorate. The drywall paint or paint that is not dried is easily frozen, resulting in the opening of the spring. Wall discoloration, peeling. Therefore, ventilation should be selected at a relatively warm noon time, ventilation time can not be too long. When the temperature drops rapidly, the window must be closed as soon as possible. After the outdoor temperature approaches the room temperature and the window is opened and ventilated, the problem of paint cracking caused by the shrinkage of the paint surface caused by the low temperature can be effectively prevented.
In addition, Shang Yun also added that before the construction must be pre-filled wall cracks, scrape putty. Putty can not be too thick, try not to use cement putty. In winter, the indoor air is dry and the water loss is fast, which easily causes hollowing, cracking, and uneven walls. Do not apply too thick during construction. Do not apply paint until the paint is dry. External wall latex paint often appears cracking during construction in winter, so it should be ensured that the construction temperature is higher than the minimum temperature for paint application, and it is best to apply the paint in strict accordance with the temperature in the product description.
According to the general construction experience, the ambient temperature of the coating application should not be lower than 5°C; the ambient temperature of the commonly used mixed color coating application should be at least 0°C; the ambient temperature when the varnish is applied should not be lower than 8°C. If the temperature is low, an emulsion coalescent can be added. Some owners open the heating during renovations. Although the indoor temperature is maintained, attention should be paid to the temperature difference between the interior and exterior to avoid thermal expansion and contraction, because under the strong opposition of cold and heat, it will also affect the paint and the coating surface. .
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