Water-based building material color steel primer-topcoat coating method

The invention relates to the technical field of water-based building material color steel coating, and discloses a water-based building material color steel primer-topcoat coating method, the coating is diluted by adding a proper amount of deionized water, and the adsorbability of the coating is improved; the coating is filtered by a 300-mesh filter screen, and the product is fully mixed and uniformly shaken or uniformly stirred before being used; the primer and topcoat integrated coating (primer is saved after coating and drying) can be directly coated on the metal surface; after construction is finished, used appliances should be immediately washed with clear water to prevent drying and curing, adopted paint is diluted by adding a proper amount of deionized water to be used for improving the adsorbability of the paint, meanwhile, deep cell autonomous synthetic resin and pigment are adopted and matched with environment-friendly materials such as functional filler and special auxiliaries, deionized water is u