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. 如果墻中含有大量的水，并且繼續含有水，即使使用防水膩子，也會出現上述現象。解決辦法:讓水在一段時間后流出墻外，先封底，然后用防水膩子粉。

　　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.

　　大家都曉得耐水膩子粉是強堿性的，但是有人說，耐水膩子粉完整干后（5~7天），這時堿性就消逝了，就不用上底漆了。這種說法是錯誤的，耐水膩子粉完整干后其堿性仍然存在，如直接上有顏色的乳膠漆會有色斑，所以一定要用底漆封鎖或者噴涂抗堿底漆。

　　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.

　　以上是濟南膩子粉廠家為大家介紹的相關內容，想要了解更多內容，歡迎訪問網站：http://www.cnlifelk.cn

　　The above is the relevant content introduced by Jinan putty powder manufacturer. To learn more, please visit the website: http://www.cnlifelk.cn