How to solve the problem of color difference of real stone paint?

With its natural and true color effect, real stone paint allows buildings to present high-end, elegant, harmonious, natural beauty, so it has been a popular product in the coating market. In the next 2-3 years, real stone paint will still occupy the mainstream market of architectural coatings, becoming one of the most popular and conventional imitation stone products.
for the market common real stone paint construction problems, small compilation of a few, I hope to help everyone to
china
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recolor whitening
phenomenon
: the coating is not dry after the rain, the color white becomes lighter, and the coating without water, the color difference is obvious.
Countermeasures
: should avoid rainy weather construction, paint construction, under normal conditions after 24 hours of drying, roller coating varnish, can effectively penetrate to fill the gap in the gravel of real stone paint, prevent rainwater penetration coating appear whitening, but also to keep the wall clean.
color difference between old and new coatings
Phenomenon
: some of the quality anomalies produced during construction, large areas of completion after repair, the appearance of color differences between the old and new coatings.
countermeasures
: sand wall paint construction, as far as possible once molding, do not repair or reduce the repair area. In case of unavoidable repair situations such as wall pipe holes, the same batch of paint can be reserved for the design of the wall pipe hole, and the same batch of materials for the whole patch.
thickness is different, the bottom
phenomenon
: sandstone product spray construction, a spray molding, thickness is not enough, the coating dry, there will be a bottoming phenomenon.
countermeasures
: according to the recommended sand wall products standard process construction, two spray. Spray the bottom first, more than 3 hours apart and then spray the second way. Or the use of the same color primer roller coating construction, closed substrate to prevent pan-alkali at the same time, improve the overall coating cover, reduce the coating through the bottom of the situation.
film temperature affects
phenomenon
: the same batch of real stone paint in a large temperature difference dry, there is a significant color difference. It is often found in brown, brick red, dark gray and other colors. The higher the temperature, the darker the color. The lower the temperature, the lighter the color.
countermeasures
: pay attention to the temperature of the project construction, try to arrange the back of the yang surface construction, to avoid the sun directly facing the wall, resulting in too fast drying speed, resulting in color difference. When the temperature difference in winter is large, pay attention to reasonable arrangement of construction time period.
Product batch color difference
phenomenon
: there is a certain difference in the color of different batches of real stone paint products
Countermeasures
: goods between different batches, first small area test spray, confirm the color, paint consumption, construction without anomalies, and then a large area of wall construction. The same batch of goods applied to the same wall, continuous construction, long-term interval construction is strictly prohibited.