Can I scrape putty in cold weather?
The construction environment has always been a very important factor. If the ambient temperature is too low, it will easily affect the dissolution of organic additives in putty. If the additives are not fully dissolved or the dissolution speed is too slow, it will affect the coating quality and construction performance of putty after batch scraping.
Of course, the environment is too hot and dry, so 5℃-35℃ is suitable for putty construction.
The batch scraping of putty should not be too thin or too thick. If it is too thin, the putty layer will easily lose water too quickly, which will lead to putty pulverization and ultimately affect the painting effect. The thicker the putty layer is scraped, the greater its drying shrinkage strength and the easier it is to crack.
Therefore, the batch scraping thickness of a single putty is preferably between 0.5 mm-1mm.
As the basis of scraping putty, if there is floating ash or loose wall surface, the putty layer can not form a firm bond with the wall surface, which is easy to cause problems such as displacement and falling off of the putty layer.
The putty layer can not only level the wall, but also serve as a "bridge" between the wall and the paint. If the putty can't be closely attached to the wall, it will shrink and expand under the external force caused by temperature change, humidity change and other factors, resulting in cracking of the putty layer.
After stirring, let it stand for a period of time to provide sufficient dissolution time for the components in the putty, so as to ensure the construction performance and later film-forming quality of the putty and avoid the waste of additives.