The main reasons for the large area of real stone paint peeling off are as follows:
Improper treatment of the base layer: Improper treatment of the base layer is one of the main reasons for the peeling off of real stone paint. The base layer must be solid, smooth, free of hollowing and dirt, otherwise it will affect the adhesion between the real stone paint and the base layer, resulting in the real stone paint falling off.
Non-standard construction technology: Non-standard construction technology will also lead to the peeling off of real stone paint. For example, applying topcoat before the primer is dry, applying primer before the mortar is dry, etc., will affect the adhesion of real stone paint.
Poor paint quality: Poor paint quality will also cause real stone paint to fall off. For example, insufficient stone powder content in the paint, high emulsion content, etc., will affect the durability of real stone paint.
In addition, there are some other factors that can also cause real stone paint to peel off, such as:
External environmental factors, such as acid rain and salt spray, will accelerate the aging and peeling of real stone paint.
Construction environmental factors: such as too low temperature and too high humidity in the construction environment, will also affect the construction quality of real stone paint.
Therefore, in order to avoid the large-scale shedding of real stone paint, it is necessary to consider comprehensively from the aspects of base treatment, construction technology, coating quality, external environment and construction environment.
Specifically, in terms of grassroots treatment, it is necessary to ensure that the grassroots is solid, smooth, free of hollowing and free of dirt. If there is a problem with the base layer, it should be repaired first.
In terms of construction technology, construction should be carried out in strict accordance with the construction specifications. For example, the primer should be applied after the mortar is completely dry, and the topcoat should be applied after the primer is completely dry.
In terms of paint quality, you should choose a real stone paint with acceptable quality. The stone powder content in the real stone paint should be more than 60%, and the emulsion content should be less than 30%.
In terms of the external environment, construction in harsh environments such as acid rain and salt spray should be avoided.
In terms of construction environment, construction should be carried out in an environment where the construction temperature is more than 5 and the humidity is less than 80%.