Pulverization logistics hang: powder produced by erosion by a coating compound is flush to the bottom area (e.g., bricks), destroy whole appearance (see pulverization) phenomenon.

Possible causes: keep up with the same reason,

A, using the low, high content of paint coatings.

Second, the outer wall use the interior wall coating.

Three, pre-coated metal wall erosion in the factory. The solution: the residual powder compound is removed (see pulverization) as much as possible.

With a stiff brush with detergent scrub the contaminated area and rinse thoroughly. If pollution is serious, is likely to use pickling.

No matter use what method to deal with, if the affected metope color after drying, consider on which the coating is high grade emulsioni paint. Erosion of the aluminum plate must be cleaned thoroughly before coating quality exterior wall latex paint (it is recommended to use the power washer).

Cracking/scaling: dry film on at least one layer cracks, eventually lead to completely destroy the coating. In the early days, there will be a hairline crack. After that, the coating will into flake.

Possible causes:

Second, the excessive dilution coating or coating is too thin.

Three bad, surface pretreatment, coating is particularly true when not render bare wood.

Four, in the cold or windy conditions of coating, emulsioni paint drying too quickly.

The solution:

A paragraph, repair is a feasible way to continue to base material cracking is that with a spatula or steel wire brush to remove loose has been or will be peeling off color chip, rounded corners, in the bare base and coating again.

Second, if the crack has reached base material surface, by scraping, polishing and/or use heat gun to remove all of the coating, then the primer, and coating quality exterior wall latex paint again.

Contamination: accumulated stain on paint film, dust particles and/or other debris, similar to the phenomenon of mildew.

Possible causes:

A, air pollution, automobile exhaust and dust gathered in the wall and horizontal border of the house.

2, use inferior coatings, especially the low-grade satin or half optical coatings.

Three, soil splash onto the wall.

Solution: before rendering and painting wash away all the dirt on the surface.

If you can't determine the problems it is dust or mold, can do a simple field test (see mold). With a brush and detergent wash away dirt, and then thoroughly flushed with hose water.

Special dirty place with a power washer to handle. Despite the fouling can not be completely eliminated, high-quality exterior wall latex paint can provide excellent stain resistance and scouring resistance.

And specular coating is better than flat paint contamination resistance, because the flat paint more porous and are more likely to be gathering dust. Also, the use of specially designed for resistance to be stained with dust is high grade emulsioni paint.