Primer for metal for outdoor works: characteristics, temperature of use, consumption. Primer for metal for external work with their own hands

If you need a primer for metal for outdoor work, you need to know how it is used, and what types of this composition exist. Do not interfere and practical advice that will be presented in this article. It is worth noting that the foundation before the application of the paint must necessarily be prepared, however, in practice, the private masters do not pay sufficient attention to the preparatory measures. As a rule, people who do not understand the meaning of priming the surface, begin to apply colorants directly to the metal, limiting themselves to maximum only by removing the old layer of decorative coating. In some cases, the removal of the old coating is not done at all. Some masters carry out only the cleaning of rust, as well as the degreasing of the surface. Primer for metal for outdoor works meanwhile offers many advantages.

Necessity of primer application

If you use a primer before painting the steel, you will be able to provide a better color. You will be able to increase the adhesion characteristics of the mixture, further strengthening the base. Among other things, the primer is able to reduce the porosity of the surface, which makes it possible to apply paint coatings in a more thin layer. This greatly reduces the consumption of material, as well as money and time. Primer can strengthen water repellent characteristics and prevent corrosion processes. This can happen when the finish finish is damaged during operation. Primer for metal for outdoor works can significantly increase the life of the material.

Varieties of primer for metal

Among the varieties of primers, it is possible to distinguish transducers that are able to convert iron oxide to another compound. This mixture contains orthophosphoric acid, which after the application begins to interact with rust. Eventually, a reaction occurs that allows the production of iron phosphate. The latter, in turn, covers the surface with a strong film, which is characterized by waterproof characteristics. This is quite enough to exclude the occurrence of corrosion processes at the time of damage to the paint layer. Cracks, chips or detachments may be damaged. Primer for metal for outdoor work is particularly relevant for those materials that have been strongly affected by rust.

Protectors

This kind of primer is a paint and varnish materials in which fine fractional metal particles are dissolved. Depending on the manufacturer, they can be contained in the composition in an amount up to 92 percent. As a result, it is possible to obtain a metallized texture, which after application creates a thin protective film on the surface, which has high strength characteristics. If the manufacturer has not prescribed restrictions in the instructions, such a primer can be used on almost any surface, since it is universal.

Passivators

Primer for metal for external work with their own hands can be applied without additional professional help. It can be passivators, which slow down the course of chemical processes. Even if such an external preparation coat is damaged during operation, the metal with the liquid will not interact so soon. Such compositions are most relevant in cases where the surface will be subjected to mechanical influences such as impacts or friction.

Insulators

If you yourself will be applied primer for metal for outdoor works, the characteristics of the composition is important to study in advance. Thus, in the market of building materials, an insulator can be chosen, based on traditional coloring compounds of the type of bitches. They introduce all kinds of fillers to give specific characteristics of the mixture. The film, which is formed after surface treatment, is able to reliably isolate the substrate from the effects of liquid. As an example of such an additive is an oxide resin. Most often such mixtures are used for ferrous metals, as well as cast iron.

Two-component primers

These mixtures can be considered as a kind of passivating agents, but they have an enhanced action, which is provided by the presence of special components. Similar primers are recommended to handle alloys and any metals.

Features of using a primer for metal

If you use a metal primer for outdoor work, the temperature of use should be taken into account in advance. In general, the technology of work remains the same for all types of composition. Initially, you need to get rid of the old finish coat, using a steel brush for this. Surfaces must be roughened if the substrate is smooth. This increases the adhesion characteristics. Then you can start applying the first, the thinnest layer of the composition. After the mixture has absorbed, it is possible to reapply. It is important to consider the consumption of the material Thus, on 15 square meters will leave about one kilogram of composition. This must be taken into account before acquiring the composition.

Temperature of use

If you use a metal primer for outdoor work, the expense is important to consider, especially since you already know it, but it is important to take into account the application temperature. Do not start work if the temperature of the environment is more than 30 degrees. In this case, the composition can change its technical characteristics, and also the drying stage will be disturbed.