Paint construction, who says simple with whom anxious

As the saying goes, "three-point paint, seven-point construction", the level of paint construction technology directly determines the final effect of the paint. What should we do when we encounter the following problems in coating construction? Small editor to share a few common paint construction problems to deal with.
of
: a thin layer of powder appears on the surface of the wall paint film, the clothes will turn white when touched, wipe will drop

.
the cause:
water is added to the construction, resulting in the paint film is too thin. (Common package material in order to save material appears)
. . . wall substrate alkaline (PH value greater than 7-10) is too high, paint film is destroyed. Usually occurs in the uncooled putty new wall surface
. . . wall substrate and ambient humidity is too high, re-painting time is short, poor ventilation
. . wall substrate (such as bottom putty with poor quality material) is too loose
. . painting is not completely filmed, generally 7 days after construction can be completely filmed
. . . the interior wall paint for outdoor use.
buy fake and inferior products, how
solve the problem?
remove the powder layer, clean the powder, rinse it with water to dry or paint the building adhesive.
is not suitable for construction if the temperature of the wall is below 8 degrees C.
amount of diluted water should be appropriate, according to the concentration of paint adjustment, do not over-dilute.
if necessary, it is necessary to select a suitable primer to the wall substrate for anti-alkali moisture sealing treatment, improve the adhesion of the paint.
recommends painting two layers of interior wall paint with better weather resistance.features of a
surface: many irregularly sized, irregularly shaped protrusions appear on the surface.
of the problem:
of the grass-roots water content is too high, not sufficiently dry.
coating is applied when the underlying coating is not dry.
spray, there is water vapor in the compressed air, mixed with the paint.
's the problem solved?
should be fully dried at the base before brushing.
coating after the coating is completely dry, the coating is applied.
the oil and water separator to prevent water vapor mixing before spraying.
the foaming wall should be completely dry, gently smooth the bubble with fine sandpaper, and then apply the paint. For large areas of bubbles, should be removed and cleaned, re-coated. paint film surface gloss uneven
features: wall paint film gloss uneven, light and dark distribution, often appear in silk, half-gloss wall paint products.
of the problem:
of the wall base is not equal in looseness.
the thickness of the primer and paint brush is not uniform.
spray is present in the local application when spraying.
the same wall using different construction tools.
use different products on the same wall.
the brush crevices when the paint is wet, resulting in obvious joints, i.e. no effective "wet joints".
the wall substrate temperature is too high, or putty quality is poor, loose, paint dry too fast.
's the problem solved?
use primer, especially local patches, must be applied with the surrounding primer before painting.
, whether primer or finish, ensure that each coating brush is the same thickness and free of leaks.
ensure the use of uniform construction tools. Use the same product on the same wall to ensure wet connection in the section area.
the drying time of the paint according to the appropriate concentration according to the different climate. surface pan-alkali
characteristics: the surface of the paint film appears saline analysis, on the surface to form a white hanging or damage the paint film adhesion.
the cause:
. The water, alkali or salt content of the wall substrate is too high, and when the water vapor evaporates, the saline is taken out and dissected at the bottom or surface of the lacquer film.
. Poor water resistance during civil construction, causing rainwater moisture to enter the substrate on the other side of the wall through cracks or unpainted substrates, and to take out saline when diffused.
's the problem solved?
. Eliminate the powdered layer;
select suitable paint;
. Follow the construction specifications and do not over-dilute;
. If necessary, use suitable primer to seal the wall substrate, such as Apollo Health Paint Series;
0 ensure that the construction environment meets the construction requirements. of the
: the coating film is partially drooping, forming a tear-like or ripple-like shape.
of the
: the construction surface is too light or uneven, there is oil in the recess.
paint is over-diluted by water and sticks too low.
, too many rollers, brushes, paint film once construction is too thick.
spray pressure is uneven in spray construction, and the spray gun is not consistent with the construction surface distance.
paint is drying too slowly.
's the problem solved?
sandpaper to polish the surface of the wall to increase adhesion. If it is the grass-roots, uneven, should try to use the grass-roots flat, grinding out the corners. When brushing, brush with force.
improve the construction technology, apply a few more paint, each construction should be thin coating.
water is added proportionally according to the concentration of the paint and should not be over-diluted.
the spray construction, adjust the air pressure machine, so that the pressure is uniform, the distance between the nozzle and the application surface is adjusted enough to eliminate this malady, and should be moved evenly.