In modern construction, galvanized metal is used quite often. It has become popular for its reliability and practicality. But the zinc coating has its drawbacks, expressed in low resistance to corrosion. Although the material is not as much affected by this effect as steel, but if you want to achieve long-term operation, you should cover the surface with special paint.
The main types of galvanized paints
If you need paint on galvanized metal for outdoor use, then you should deal with some varieties of such coatings. They are:
- acrylic;
- vinyl;
- alkyd;
- rubber.
Acrylics are usually made on the basis of organic solvents; water-dispersion formulations can also be found on sale. Among the ingredients they contain anti-corrosion additives. Using acrylic paints and varnishes you can create a matte layer on the surface. The main advantages of these mixtures are: excellent resistance to external influences, ultraviolet, excellent adhesion, excellent water repellent properties, durability and low cost.
Overview of galvanized alkyd paints
Galvanized metal paint for outdoor use can be alkyd. If you compare with the above material, then using the first one you can create a glossy finish. In the manufacturing process, an anti-corrosive active pigment is used. Among other things, these paints have outstanding performance. In a wide assortment of the modern market, you can find alkyd compounds that can be used in an industrial environment and marine climate.
Overview of the features of galvanized vinyl coatings
Paint for galvanized metal for outdoor use can also be vinyl. Recently, she began to gain popularity, due to some of its properties. The paint has high weather resistance and copes well with high temperatures.
A temperature of up to 70 ° C can constantly affect a surface coated with a material; temporarily, the temperature can be increased to 90 ° C. However, vinyl coating has some disadvantages, which are expressed in high cost. The price is justified by some positive qualities in terms of durability.
Overview of the features of galvanized rubber paint
The paint on galvanized metal for outdoor work is also represented by a rubber coating, which is made on the basis of acrylic. Among the distinguishing features is high elasticity. After drying, the top layer of such material will resemble rubber, due to this, the impact on the surface of mechanical forces such as impacts is not terrible.
Such paints for metal surfaces are characterized by durability, resistance to chemical influences, excellently undergo atmospheric precipitation, are environmentally friendly and have high decorative properties.
How to paint a galvanized metal roof
If you need paint for galvanized iron, than to paint the roof, you should think. The most common coatings today can be called: acrylic dye, oil paints, as well as compositions with anti-corrosion properties. For such surfaces, special dyes should be used for the reason that in galvanizing, the surface is more passive than ordinary metal. Therefore, the paint should be selected taking into account high elasticity.
When choosing paint on galvanized surfaces, experts advise to pay attention to the acrylic dyestuff “Tsikrol”, which has high adhesive abilities and excellent anti-corrosion properties. Among the advantages of this paint material should be highlighted: resistance to atmospheric influences, excellent tolerance to low temperatures and moisture resistance. This paint dries quickly enough after application, does not fade under the influence of ultraviolet and has water-repellent properties. Apply it on a dry and clean surface with a spray, roller or brush. If necessary, the composition can be diluted with solvent P646 or butyl acetate. Such a protective coating significantly extends the life of the galvanized roof.
Reviews about the paint "Tsikrol"
This anti-corrosion paint for galvanized metal is an enamel primer, which is made on the basis of acrylic resins and polymer additives. Organic solvents act as additional elements . According to buyers, this mixture has a high hiding power of the painted surface.
It will be able to protect the mixture even from exposure to salt air. Consumers emphasize that this soil is convenient in operation, has hydrophobic characteristics and is suitable not only for galvanized steel, but also for gutter systems, gutters, galvanized pipes, profile, corrugated board, iron and galvanized iron.
Application of the mixture should be carried out on a surface cleaned from rust, and if necessary, xylene or ethyl acetate can be used as solvents.
Consumers advise to carry out work at a temperature range in the range from -10 to +50 ° . Full drying should be expected within 18 hours, this is true if the outside temperature is + 20 ° C.
Conclusion
The application of a special paint coating on a galvanized surface will protect it from the negative effects of the external environment. However, experts recommend starting these manipulations only a year after the completion of the installation of roof structures.
During this time, the atmosphere will prepare the base for staining, clean from rust and make the surface a little rough. If you want to get down to work soon, you can prepare the surface yourself, but in this case, you must try not to spoil the thin layer of galvanization.