Really stone paint coating surface water mark the cause of the phenomenon have?

True stone lacquer is today's hottest exterior wall coating. From the autumn to the next year summer, the temperature suddenly change alternately, morning and evening temperature and humidity changed a lot. As a result, when stone paint coatings dry, especially in the early stage of drying, when soaking by rain or dew, soft white coating is easy to get, this not only affect the appearance, but also reduce the strength. Next, KeBao building materials will tell you why water damage in true stone lacquer coating surface. 1. Primer is not in conformity with the requirements and have high water permeability and air permeability, or substitute ordinary latex paint really stone paint, special seal primer, make the wall of the water vapor penetration into really stone paint coating. If really stone paint is not dry completely and glass transition, when the outside temperature is low or when water vapor is larger, the water in the really stone paint condenses under the paint layer, causing surface become white. 2. Wall enough dry plaster surface density is low, seal leakage or brushing paint not firm, lead to within the walls of water seeping into the incomplete vitrification really stone paint coating. When the outside temperature is low or high humidity, really stone paint the water condensation under the paint layer, causing surface become white. 3. Spraying really stone paint, the air temperature is low, or high air humidity, the dry degree of coating and low degree of vitrification, coating moisture content is too high. In this case, if the above lacquer, really stone paint the moisture volatilizes more slowly. When the outside air temperature is low or when water vapor is larger, the moisture in really stone paint to condense under the paint layer, lead to surface appear white, sometimes white coating will soften. 4. Use do not conform to the requirements of paint. Paint water resistance is poor, or paint brush and brush leakage on time in the construction process is insufficient, lead to external water intrusion and surface become white. 5. Really stone paint formulation system defects. Emulsion dosage is too low, can't completely cover the sand. Paint film of the hole is too big. External water vapor can easily enter the film inside, salt and alkali of the underlying surface, the formation of irreversible white marks. That is really stone paint coating KeBao building materials share the cause of the surface water mark. The above five is really stone paint coating on the surface of watermark appearance. Everyone should pay attention to the five, hope to be of help. Interested in really stone paint friend can read more about really stone paint 'really stone paint in the peak of construction should pay attention to what issues? 'The information.