The Ways to improve the adhesion of putty

Putty adhesion will directly affect the construction quality of the paint, Many projects have found that the putty has poor adhesion during the construction process, but the exterior wall putty construction has been completed for a large area. Considering various factors such as construction period and cost, the exterior wall putty can no longer be replaced. In this case, is there a way to improve the putty adhesion?

1.Water spray maintenance method to improve the adhesion of putty

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

2.Transparent penetrating primer improves putty adhesion

Once you find that the adhesion of external wall putty is poor, you must not use colored alkali-resistant sealing primer. Use transparent sealing primer. Compared with colored primer, transparent sealing primer has better permeability, which can strengthen external wall putty and improve Putty adhesion

3.Properly add water to the sealing primer to improve the adhesion of the putty

In many projects, the primer is used directly after the barrel is opened during construction, which will affect the permeability of the primer; a reasonable approach is to properly dilute the primer with water so that the primer can penetrate into the putty base layer, thereby improving the exterior wall putty Adhesion

4.Avoiding direct sunlight on the wall during primer construction can improve the adhesion of putty

Especially in summer, the temperature of the wall exposed to direct sunlight is very high. The primer will quickly form a film after rolling and cannot penetrate into the base layer 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 to allow the primer to fully penetrate into the putty base layer, which will improve the adhesion of the putty.