The exterior wall putty construction has been completed a large area, and I found that the putty adhesion is poor. What should I do?

The putty adhesion will directly affect the construction quality of the coating. Many projects have found that the putty adhesion is poor during the construction process. However, the exterior wall putty construction has been completed a large area, and the construction period cost and other factors are considered. The external wall can no longer be replaced. Putty, in this case, is there a way to improve the adhesion of putty?

Encountering projects that have already been constructed and found that the putty adhesion on the exterior wall is poor. There are several ways to improve the putty adhesion:

First, water maintenance method to improve putty adhesion

The main ingredient of exterior wall putty is cement, which will increase its strength when exposed to water. Therefore, after the construction of the putty on the external wall is complet, the putty can be cured by rolling or spraying to improve the adhesion of the putty.

Second, transparent penetration primer improves putty adhesion

Once you find that the external wall putty has poor adhesion, you must not use a colored anti-alkali closed primer. Use a transparent closed primer. The transparent closed primer is better than the colored primer. It will have better permeability and can strengthen the external wall putty Putty adhesion.

Third, properly add water to the closed primer to improve the putty adhesion.

In many projects, the primer is use directly after the bucket is open, which will affect the permeability of the primer. A reasonable approach is to properly dilute the closed primer with water. Let the primer penetrate into the base of the putty, thereby improving the exterior putty. Adhesion.

Fourth, avoiding direct sunlight during primer construction can improve putty adhesion

Especially in summer, the temperature of the wall expose to direct sunlight is very high. After the primer is coat, it quickly forms a film, which cannot penetrate into the base of the external wall, which will cause poor adhesion. On the contrary, avoid the wall exposed to direct sunlight, Add more water to the primer. Allow the primer to fully penetrate the base of the putty, which will improve the adhesion of the putty.

If you have any questions, you can send them to my email : tanyatao@qinahaochem.com

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