1. 821 putty is not water resistant. When the wall contains water, 821 putty will absorb blisters, resulting in blistering, cracking and falling off of a large area of emulsion paint. However, the performance of latex paint is better, the film formation is better, and the problems are more serious.

　　2. 如果墙中含有大量的水，并且继续含有水，即使使用防水腻子，也会出现上述现象。解决办法:让水在一段时间后流出墙外，先封底，然后用防水腻子粉。

　　2. If there is a large amount of water in the wall and it continues to contain water, the above phenomenon will occur even if waterproof putty is used. Solution: let the water flow out of the wall after a period of time, first seal the bottom, and then use waterproof putty powder.

　　大家都晓得耐水腻子粉是强碱性的，但是有人说，耐水腻子粉完整干后（5~7天），这时碱性就消逝了，就不用上底漆了。这种说法是错误的，耐水腻子粉完整干后其碱性仍然存在，如直接上有颜色的乳胶漆会有色斑，所以一定要用底漆封锁或者喷涂抗碱底漆。

　　Everyone knows that the water-resistant putty powder is strongly alkaline, but some people say that after the water-resistant putty powder is completely dry (5-7 days), the alkaline will disappear, and the primer will not be used. This statement is wrong. After the water-resistant putty powder is completely dry, its alkalinity still exists. For example, the latex paint with color directly will have color spots, so it must be sealed with primer or sprayed with alkali resistant primer.

　　以上是济南腻子粉厂家为大家介绍的相关内容，想要了解更多内容，欢迎访问网站：https://www.jnfhjc.com

　　The above is the relevant content introduced by Jinan putty powder manufacturer. To learn more, please visit the website: https://www.jnfhjc.com