What about alkali-bleaching of exterior wall coatings?
The bleaching and fading of exterior wall coatings is the most common and common quality defect in the paint industry, which is the most destructive to the appearance decoration effect. What can we do to avoid that?
1. Check whether alkali bleaching is caused by less or missing alkali-resistant primer. If it belongs to the cause of pan-alkali whitening, the project has to be redone.
2. If it is white due to incomplete drying of emulsion, this is the initial water resistance of the emulsion. When the temperature rises, the whitening will automatically resume; if it is necessary to quickly restore the original color, after the exterior wall coating is dry, try topcoat roll or spray it once.
3. Some whitening is caused by uneven spraying of exterior wall paint, which looks like whitening on the side. Faced with this situation, you can first find a place, in the original white position and spray again, after drying to see if the color is the same, if possible, direct large area spraying more than once.
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