Why is the exterior wall painted white when water is met? The reason is here, please collect!

original title: Why is the exterior wall real stone paint whitened when water is met? The reason is here, please collect!True stone paint with granite, marble, natural rock and other stone realistic decorative effect, natural color, hard as stone finish, show solemn, elegant and noble style. Especially suitable for high-end residential, villas, hotels, office buildings and other architectural wall decoration. In recent years, real stone paint, favored by people, more and more building exterior wall coating are using real stone paint.rainy summers in southern China, many of the stone-painted facades are prone to whitening and even peeling after they have been flushed with rain. Why is this happening? The main reasons are as follows: 1, some paint manufacturers, in order to save the production cost of real stone paint, reduce the content of emulsion, so that it is easy to lead to the real stone paint spray after the paint film loose, not tight enough, after encountering rain, rain easily penetrate into the paint film, resulting in the paint film whitening of the real stone paint.2, real stone paint production process, too much added surfactants. Excessive addition of active agents can greatly reduce the water resistance of emulsions. The water resistance of the real stone paint is reduced, and it is easy to whiten after the rain washes away.3, real stone paint in the production process, add excess cellulose and other substances as thickeners. These substances remain in the coating after the coating is filmed, thus reducing the water resistance of the paint film.4, real stone paint is not completely dry on the construction cover paint.make sure that the real stone paint is completely dry before the face paint is constructed. If the construction cover paint is not dry, the coating film is easy to produce whitening phenomenon, and will also affect the strength of the real stone paint, serious may fall off the whole piece., in the choice of real stone paint products, we must choose good quality, good reputation of paint manufacturers.
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