The main purpose of renovation and coating of color steel tile is to avoid the expansion of rust scope and aggravation of corrosion of color steel tile roof, so as to greatly shorten its service life. Renovation and painting is an effective anti-corrosion measure, which can greatly improve the service life of color steel tiles and reduce the number of replacement of metal roofs, so as to reduce the cost of enterprises. For general standard construction, primer shall be sprayed.
Its function is determined by the anti-corrosion demand of color steel tile renovation, and the demand also determines many excellent characteristics that professional color steel tile special paint primer must have.
In order to prevent the corrosion of color steel tile, it must be isolated from the air. The primer plays such a role. Therefore, this determines that the professional color steel tile renovation primer must have good adhesion. Only in this way can we ensure that the metal roof is well isolated from the air. In order to prevent corrosion more effectively, the primer in direct contact with the metal roof surface must also have good corrosion resistance, rust resistance, oil resistance, chemical resistance and water resistance. It is the first coating directly coated on the surface of its own parts after surface treatment, and it is the beginning of the whole coating. Therefore, if the color steel tile is renovated and sprayed with primer and only sprayed with finish paint, its rust prevention performance will be relatively low and the service time will not be very long. What "warranty of 8 years and 10 years" is empty talk.
The color steel tile renovation primer is mainly the intermediate layer connecting the metal roof substrate and the finish, so the compatibility of the primer is very important, which is related to the fastness of the finish. The compatibility here refers to the adaptability between coatings and the firmness of their combination. It is recommended to use primer and finish paint together. Only in this way can the renovation warranty time of color steel tile reach a long time, and the primer with strong compatibility is applicable.
There are many kinds of primer. When matching, we must pay attention to the compatibility between primer and finish. According to the construction experience of professionals in the industry, different types of coatings are usually incompatible, and the same kind of coatings are usually compatible. In order to avoid incompatibility and affect the construction project quality, it is recommended to choose products with the same anti-corrosion system on the bottom, such as siding HD series color steel tile special paint.
In short, the color steel tile renovation spraying primer is the first layer in the coating system, which is used to isolate the air and prevent the oxygen corrosion of the metal roof. Professionals will add antirust raw materials inside. It also has the functions of improving the adhesion of the top coat, increasing the fullness of the top coat and making it more beautiful. In order to improve the long-term effectiveness of rust prevention and corrosion prevention, the renovation of color steel tile and spraying primer is an indispensable link. Only spraying topcoat is a non-standard construction embodiment. Because the functions of topcoat and primer are different, topcoat focuses on aesthetics, while primer focuses on improving adhesion, anti-corrosion function, acid and alkali resistance, etc.
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