How to spray? Is it better to spray or roll paint?

Spraying and rolling have advantages and disadvantages:

Advantages of spraying: fast spraying, smooth and delicate feel. Flat. Corners and gaps can also be well painted.

Disadvantages: the construction team's protection workload, in addition, if there is a bump, repair the color difference will be more obvious than the roll coating.

The advantages of roll coating: save paint, repair color difference is small.

Disadvantages: workers are prone to cut corners (meaning more water), the corner of the wall to deal with some of the trouble.

Spraying "alternating method" and "pressure gun method" two ways. Alternate method refers to vertical and horizontal alternating spraying method. Pressure gun method refers to the latter gun spraying and other coatings pressed the previous gun coating 1/2, in order to make the coating thickness consistent.

The nozzle caliber and spray pressure according to the paint product specification and other requirements.

Nozzle and spraying surface should be about 30cm apart. The nozzle and the grass-roots level to maintain a vertical state. The direction of movement of the spray gun and the grass-roots level parallel, can not be curved to move, otherwise the coating sprayed in the middle of the thick, thin on both sides. Operation should be the first to move the gun and then buckle the board machine, release the board machine before the gun to stop moving, so as to avoid each row of coatings, such as the first and last too thick.

Before spraying should be first doors and windows and other parts of the mask. In order to minimize the spray escape, spraying the sun corner can be first in the end of the top-down vertical spraying, and then horizontal spraying. When spraying the corner, don't spray straight to the corner, which will make the coating too thin on both sides of the deep corner and too thick on the outside of the corner. You should spray vertically from top to bottom from both sides of the corner, and then spray horizontally. Vertical spraying, the nozzle from the top of the corner to be farther away, so as to produce and other sprays just in the corner of the top of the mingled, will not produce a fall, spraying the roof, in order to prevent the paint floating down on the body, should try to stand back; gun tilt should not be too large, so as not to affect the material.

If the nozzle is clogged in use, use a bamboo stick to unclog it, and strictly prohibit the use of hard steel wire or iron nails, so as to avoid bad nozzles and other shapes, reducing its precision and affecting the spraying effect. Spray gun immediately after use with water or thinner cleaning.

Spraying the front is smoother, but it is also more wasteful. Save money or roll coating is better