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、因為墻體保溫沒有做好而導致的墻體發霉：應先檢查墻體是否做過保溫處理。用檢查錘敲擊墻面，如果聲音空洞，則說明墻體有保溫層，如果聲音沉悶，則說明墻體沒有做保溫層。

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.

若存在保溫層則需檢查建筑外墻是否存在裂縫，如果沒有裂縫，說明保溫材料不行，要進行更換，這是根治之法。還有墻體沒做防水導致墻體滲水引起墻壁發霉。

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、因為季節原因造成的發霉：更好不要馬上修補。因為墻體內的水分正在逐漸揮發，屬于裝飾材料的正常物理變化。如果未等水分完全揮發完就又刷上新的漆面，水分仍然會繼續揮發，并且還會從其他地方出來，墻體就有可能再次發霉。

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.

如果有關于膩子粉的問題，歡迎前來咨詢或關注網站：http://m.man5g.cn會有在線客服進行解答。

If you have any questions about putty powder, you are welcome to consult or pay attention to the website: http://m.man5g.cn There will be online customer service to answer.