The adhesion of putty powder has a great influence on the later wall painting, so it is very important to improve the adhesion of putty powder. The following to introduce several methods to enhance the adhesion of wall putty, for your reference.
1) The main component of wall putty is cement, which will increase the strength when meeting water. Therefore, after the wall construction, roll coating or water spraying method is used to maintain the putty, so as to improve the putty adhesion.
2) If the wall putty has poor adhesion, the transparent sealing primer has better permeability than the colored primer, which can strengthen the putty and improve the putty adhesion.
3) After the primer is opened, the permeability of the primer will be affected; the correct way is to add water to dilute the primer, so that the primer can penetrate into the putty base, so as to improve the adhesion of the putty on the exterior wall
4) In summer, the temperature of the wall exposed to sunlight is high, and the primer roll coating will form a film quickly, which will cause poor adhesion. On the contrary, to avoid the direct sunlight on the wall, add more water to the primer to make the primer fully penetrate into the putty base, which will improve the putty adhesion.