Is wall mildew related to putty powder?
The cause of wall mildew is nothing more than dampness. One is seasonal dampness, which has little to do with children's pink color. One is that the base of the wall is not well treated, which may be the cause of putty powder.
1. Wall insulation failure causes wall mildew: first check whether the wall has been insulated. If the sound is hollow, then the wall has insulation. If the sound is dull, it means that the wall is not insulated. If there is an insulating layer, check whether there are cracks in the exterior 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 the radical cure method. In addition, the walls are not waterproof, which leads to water leakage and moldy walls.
2. Mould caused by seasonal reasons: It is better not to repair it immediately. Due to the gradual volatilization of water in the wall, it belongs to the normal physical changes of decorative materials. If you put on a new coat before the water evaporates completely, the water will continue to evaporate and come out of other places, and the walls will become moldy again.
Now putty powder is generally water-based putty powder, which contains calcium ash powder, so the main reasons for mildew are as follows:
First, the house has leaks or seepage, leaks or seepage place, because long time wet, will be mildewed, do not say putty powder, long time wet place, clothes should be mildewed.
Secondly, the building is long and humid, and the backwater inside the building makes the walls and ceilings very humid, and it also causes large areas of mildew.
Third, the balcony, bathroom used putty powder, because the balcony often because of rain, sunshine and rain and contact with water, bathroom often bathed so that the inside is very humid, may also be mildewed.
Solutions: prevention is the main method, such as knowing the building somewhere seepage or balcony, bathroom and other wet places, construction with external wall putty powder or neutral latex paint cover. Due to supervision, for the first time, we should not use putty powder to construct mouldy walls. The solution is to grind mouldy areas, roll-brush latex paint or Shovel them off, and scrape off putty powder.