Common knowledge of coating: Causes and solutions of foaming of exterior wall coating

Core tips: blistering of exterior wall coating: Due to the loss of adhesion in some parts of the paint film, it is separated from the surface of the substrate and blisters Possible causes: 1 The exterior wall coating is applied on the surface heated by direct sunlight 2 Apply solvent based paint to wet surfaces 3 Moisture volatilizes through the outer wall (this is not easy to happen for emulsion paint compared with solvent paint) 4 The emulsion paint is exposed to dew, moisture or rain soon after drying, especially when the surface pretreatment is not enough 5 The construction coating layer or coating surface layer is damaged before the external coating base is completely dry, causing rainwater to enter Which is the price of Dajin diatom mud Recommended brief introduction: which is the price of Dajin diatom mud? How to buy genuine diatom mud? Guangdong diatom mud agent suggests placing a basin of cold water in the air conditioning room, so that the diatom mud wall can breathe effectively The feature of the breathing wall is obvious When the indoor air is dry, the diatom mud wall will release the absorbed water quickly Put it out to help regulate the indoor dry humidity It is suggested to place a basin of cold water in the air conditioning room, so that the wall of diatom mud can breathe effectively The feature of the wall that can breathe is obvious When the indoor air is relatively dry, the wall of diatom mud will absorb the water Paint Home News: external wall paint blistering: due to the local part of the paint film loss of adhesion, and the substrate surface separation and blistering phenomenon Possible causes: 1 Exterior wall coating is applied on the surface heated by direct sunlight 2 Apply solvent based paint to wet surfaces 3 Moisture volatilizes through the outer wall (this is not easy to happen for emulsion paint compared with solvent paint) 4 The emulsion paint is exposed to dew, moisture or rain soon after drying, especially when the surface pretreatment is not enough 5 If the outer coating base is not dry, the construction coating layer or coating surface layer will be damaged, causing rainwater to enter the coating base, until the coating base is damped, the moisture stored in the coating base will expand under the sunny heating conditions, forming the hot gas to release outwards, until the coating surface appears foaming Solution: 1 If the bubble continues to the base material: we should try to eliminate the source of moisture, repair the loose joint sealant, and consider installing the exhaust fan to remove the bubble 2 If the bubble does not extend to the base material: the bubble should be scraped off, then polished, any wall surface should be primed, and finally repainted with high-quality exterior wall paint Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,