What are the precautions in the construction of colorful coatings?

Multicolored paint, because of its softness, color, beauty, matt and strong three-dimensional effect, can obtain a variety of appearance effects according to different construction methods, and is the best choice for decoration and protection of building external walls. Matters needing attention in the construction of colorful coatings.

Key points of construction operation of colorful coatings

A, grassroots processing, uneven, cracked, rough surface to be embedded with putty, putty to have a certain strength and water resistance, and iron sand to smooth. Under normal circumstances, it is "two batches and two grinds". Generally speaking, chemical slurry and fly ash should not be used as putty, but white cement, old powder and 107 glue, with white cement: old powder =8:2. In addition, repainted walls should be treated separately according to the types of old plasters. For oily coating, use 0- 1# sandpaper to polish the surface. For the latex paint layer, only dust and oil stains on the surface need to be removed. For water-soluble coatings, a hot water surface is needed. B, cover the paint surface behind the external corner with plastic film and other covering 10-20cm. In order to prevent the colored paint on both sides of the horn from being polluted by spraying, the covering should be moved to the painted side. After the spraying surface is finished, be careful not to pull up the coating film when taking off the cover.

C, embedded putty batch dry at the grass-roots level, the ready mixed paint from left to right, from top to bottom evenly painted on the wall.

D, stir the medium coating evenly, pour it into the spray bucket, and spray it evenly on the wall surface from top to bottom and from left to right with a special spray gun to form a colorful surface layer, and the moving speed of the nozzle should be uniform and vertical to the wall surface. When the spray gun moves horizontally, the nozzle should be in a horizontal state.

E, for oily paint, when repainting the old wall, after being polished with sandpaper, paint the surface layer first, and then paint the middle layer. As mentioned above, for morning light emulsion coatings, this step should also be carried out after the base treatment, while for water-based coatings, this procedure should be applicable to the bottom layer, middle layer and top layer.

Matters needing attention in the construction of colorful coatings

A, spray gun and container after use, should immediately rinse with water.

B, ventilation and fire prevention should be paid attention to during construction, because it contains organic solvents.

C In winter, when the viscosity of colorful paint on the surface is too high, the packaging container can be heated in water at 50-60 degrees.

D, don't dilute this paint with thinner and water.

E, avoid mixing between the intermediate coating and the bottom coating.

F. Avoid rainy days and hot weather conditions. Pay attention to the influence of climate on coating construction. Construction shall not be carried out when the construction environment is lower than 5 degrees Celsius to ensure the luster, color and durability of colorful coatings. The construction interval of each coating should be determined according to different climates.