The cause of wall mildew is nothing more than moisture caused, a kind of humidity caused by seasonal reasons, which has little to do with putty powder. One is that the base course of the wall is not well done, and the base surface is not treated well, which may be caused by putty powder.

一、因为墙体保温没有做好而导致的墙体发霉：应先检查墙体是否做过保温处理。用检查锤敲击墙面，如果声音空洞，则说明墙体有保温层，如果声音沉闷，则说明墙体没有做保温层。

1、 Because the wall insulation is not done well and caused by mildew: should first check whether the wall has done insulation treatment. If the sound is hollow, it means that the wall has insulation layer. If the sound is dull, it means that the wall has no insulation layer.

若存在保温层则需检查建筑外墙是否存在裂缝，如果没有裂缝，说明保温材料不行，要进行更换，这是根治之法。还有墙体没做防水导致墙体渗水引起墙壁发霉。

If there is thermal insulation layer, it is necessary to check whether there are cracks in the external wall of the building. If there is no crack, it means that the insulation material is not good and needs to be replaced. This is a radical method. There is no waterproof wall, resulting in wall water seepage, causing the wall moldy.

二、因为季节原因造成的发霉：更好不要马上修补。因为墙体内的水分正在逐渐挥发，属于装饰材料的正常物理变化。如果未等水分完全挥发完就又刷上新的漆面，水分仍然会继续挥发，并且还会从其他地方出来，墙体就有可能再次发霉。

2、 Mildew caused by seasonal reasons: it is best not to repair immediately. Because the water in the wall is gradually volatilizing, which belongs to the normal physical change of decorative materials. If you don't wait for the water to completely evaporate and brush a new paint surface, the water will continue to volatilize, and will come out from other places, the wall may become moldy again.

如果有关于腻子粉的问题，欢迎前来咨询或关注网站：会有在线客服进行解答。

If you have any questions about putty powder, you are welcome to consult or pay attention to the website: There will be online customer service to answer.