Before applying putty, pls measured with a ruler, to see if metope is flat. It determines the way of applying putty.Two times of applying putty is enough.It can not only makes metope flater, but also cover the base color. If the place of metope not level off, besmear scrapes more times. But each putty should be in two or three hours interval, ensure metope is sufficient dry.
Base treatment is needed before applying putty.
Check the cleaning of the base surface and the base, including the removal of wall sand and ash caking, floating sand and dust, in order to improve the flatness and adhesion of the construction surface base of putty, to ensure that the base surface is pollution-free, no empty drum, no cracks, no loose powder phenomenon.If the metope has floating ash or loose metope, will cause putty layer and metope can not form a firm and strong bond, very easy to cause putty layer displacement, fall off, cracking and other problems.
Construction temperature needs to be above 5℃, when applying putty.
Construction environment has always been a very important factor. If the environmental temperature is too low, easy to affect the dissolution of organic additives in putty. If the additive can not be fully dissolved, or the dissolution rate is too slow, will affect the putty scraping film quality and construction performance. Of course, the environment can not be too hot too dry, either. 5℃-35℃ is suitable for applying putty.