Recommend metal paint for exterior use. Metal paints for exterior use. The best paint for rust

No matter how durable a metal product is, it is still susceptible to corrosion. Even galvanized steel will rust in places over time. However, there are special paint compositions for external and internal work on metal that has already been corroded. Each of them has its own characteristics.

Main types of paints

Anti-rust metal paint gives metal products an attractive appearance and reliably protects them from exposure to atmospheric agents. All metal paints can be divided into three large groups:

• Alkyd. Their advantage is that they can often be applied to a metal surface without prior priming. Such compositions have good adhesion (adhesion), and are therefore suitable for painting galvanized steel and aluminum. Moreover, their price is low.
• Acrylic. The paint composition includes an aqueous dispersion of acrylic polymer and other additives that increase the anti-corrosion resistance of the paint. They require preliminary priming of the surface before use.
• Polyurethane. They are highly resistant to abrasion and wear, as well as to the action of chemical reagents. Therefore, such compositions are most often used under conditions of high mechanical loads and in aggressive environments during outdoor work.

In addition, there are compositions based on phosphoric acid. Such paints not only destroy traces of corrosion, but also prevent its occurrence. They are highly toxic, so they are not used indoors.

Phosphorus paints are applied in two layers: one liquid - as a primer, the other - thicker. Their application does not require preliminary cleaning of the surface from rust.

What paints are used for interior and exterior work?

Oil and epoxy paints and nitro paints are also used for metal. Oil paint is suitable for indoor work; it retains its shades quite well without direct exposure to an aggressive external environment. Nitroenamel is also used, but a protective respirator is required when working with it.

Toxic acrylic and epoxy paints are usually used for outdoor work. They retain their protective properties longer and have good adhesion to metal, but their toxicity makes it difficult to work with them indoors.

The best paint for exterior use is metal and rust paint labeled “weather resistant”—it contains components designed specifically to withstand the elements.

How to paint rusty metal

Choosing the right paint is not everything. It is necessary to properly prepare the surface to be painted. Only correctly applied paint guarantees long-term protection against metal corrosion.

Preparing the surface of a metal structure

If paint that does not have anti-corrosion properties is used, then all rust must be removed, down to the smallest traces. To do this, the base is sanded with sandpaper. This is the simplest and cheapest method, but quite labor-intensive.

There is a tool that makes the preparatory process much easier. This is a rust converter containing orthophosphoric and tannic acids. Work with such a composition is carried out in the following order:

• Remove the top, loosest layer of the rusty surface;
• Apply a rust converter;
• After a few hours, according to the instructions, wash off the layer of converted rust with water.

When working with the converter, you must use a protective work suit and a respirator.

After treating the rust, the surface must be primed. The primer is applied in a thin layer, after mixing well. For application, you can use ordinary painting tools - brushes, rollers or sprayers.

Metal painting

The metal is painted only after the primer has completely dried. The paint composition is thoroughly stirred, then evenly applied in a thin layer. The instructions for the paint should indicate when the metal can be coated with a second coat. This time must be endured.

Typically, metal products are painted in 2-3 layers: correctly applied paint protects structures from corrosion for a long time. The tools you can use are the same as for priming. After painting, the paint should dry well.

If you use a sprayer, you need to carefully ensure that there are no unpainted areas left. It is the unpainted areas that will subsequently become the source of the spread of rust, which will reduce all the work and effort to nothing.

Primer and anti-corrosion compounds must be carefully applied to all unpainted areas with a brush or an aerosol can.

Even if you use paints that do not require cleaning metal structures from rust, it is still better to clean the most problematic areas and remove large flakes of rust. Such measures will keep the metal protected for at least 5 years, or even more.

Popular metal paints

Many products have appeared on the building materials market that greatly facilitate painting work. For example, “3 in 1” paint is popular, which combines 3 components - a rust converter, a high-adhesion primer and an enamel coating.

This is the optimal composition for metal susceptible to corrosion. You just need to take into account that large flakes of rust will still have to be cleaned, but the rest of the layer does not need to be touched: the enamel will lie flat and cover all errors and defects. We list the main paints used:

• Hammerite for rust. This paint is very popular. It prevents dirt from retaining on the metal structure and can be matte or glossy. It is used in private housing construction, industry, and agricultural equipment. No rust removal is required to apply it. The temperature range at which the composition retains its specified properties is from -20 to +80 degrees.
• Ground enamels. They successfully destroy corrosion, prime the surface, and act as decorative paint. To apply them, the surface must be cleaned of dirt, degreased, and traces of rust. Ground enamels are applied in 2 layers. The time between application of layers is indicated in the instructions and ranges from 30 minutes to 5–6 hours. This interval must be strictly maintained, otherwise the metal can be covered with a second layer only after a month.
• “Rusteater” paint. A universal composition that acts both as a primer and as a paint composition. It is an enamel combined with a primer that can be used for both interior and exterior applications. Protects metal from rust in adverse conditions, stops corrosion of various alloys. The paint can be used on concrete and wooden surfaces. Temperature range without loss of quality – from -60 to +100 degrees.
• Quick-drying alkyd paint “Nerzhamed”. It also dries very quickly; alkyd and polymer modifiers are included in its composition. Suitable for application to surfaces subject to corrosion without additional cleaning of the base.
• Alkyd enamel primer TICIANA creates a surface that is not susceptible to corrosion. Rust does not spread under its layer. Can be used both indoors and outdoors.
• Poly-Hammer enamel (POLI-HAMMER) also prevents the spread of corrosion, and even has excellent decorative properties. A metal surface painted with this enamel takes on a stylish vintage look.
• Hammer effect paint. This composition is the dream of all car enthusiasts; it is also used in shipbuilding and in industries associated with exposure to chemical reagents. Its distinctive feature is its unique water resistance and inertness to salt and other aggressive environments. The elastic composition is able to mask all irregularities, has high adhesion to metal, is capable of creating structural patterns on the surface of metal structures, dries quickly and does not allow air to pass through.

The only condition is that not all paint compositions can be applied to metal parts that heat up to 100 degrees or more. Such structures should be protected with special compounds, the instructions for which allow high temperatures.

Anti-corrosion compounds for cars

Typically, a car is coated with anti-corrosion compounds at the production stage. But it happens that some parts of the body rust under the influence of adverse weather conditions. In this case, mixtures to combat corrosion will come to the rescue.

They come in two types: in the form of an aerosol, for hard-to-reach places on the car, and applied with a brush. It is enough to lightly clean the corroded area and then apply a product that will create an even and smooth painted surface.

But anti-corrosion mixtures cannot be used for those parts that heat up to temperatures exceeding 150 degrees. Here it is better to entrust the work to specialists.

Of course, this is not a complete list of anti-corrosion paints used to prevent rust of metal structures. New compositions are being developed, already tested paints are being modified.

The choice is wide, so with the correct use of anti-corrosion agents, metal structures and parts will last a long time and delight the eye with a beautiful appearance.

Among all painting works, painting metal and metal surfaces is rightfully considered one of the most difficult. No, it’s not the difficulty of applying the paint itself; the process here is no different from any other. It’s just that exterior metal paint must be very stable and not lose its properties after several seasons. We will talk about what types of metal paints there are, their characteristics and which one is the best in this article.

The marking name for nitro paint is NC, but most people are more familiar with it as spray paint. This is an ideal option when you need to paint a small product, and you don’t want to buy and paint a whole jar. In addition, paint in cans is applied by spraying, so there are no stains on the surface from a brush or roller.

Paint is diluted with any brand of chemical solvent, and the higher the number in its name, the greater the shine of the painted surface.

As for applying nitro paint, you can use any available method, from a simple brush to a pneumatic spray gun. The only limitation is the foam coats on the roller, which the nitro paint instantly corrodes.

Of course, using such paint when working with large volumes is at least impractical, and this material has more disadvantages than advantages.

Minuses

This:

• Low adhesion to the surface, as a result of which the paint becomes unusable after just a few years.
• A very unpleasant and toxic odor that is quite capable of causing harm to health.
• Low resistance to ultraviolet rays. Simply put, paint fades quite quickly in the sun.
• High consumption per square meter of area.
• Does not interact with other types of paints and dissolves them.

pros

This:

• Relatively low price, especially if you buy paint not in aerosol cans, but in standard cans.
• Fast drying. You can work with nitro paint even at sub-zero temperatures, and the complete drying time will be only a couple of hours. And in the warm season, complete drying of one layer takes several minutes.
• Easy to apply in any way.
• If necessary, nitro paint can be easily removed with a regular solvent.

This article discusses such a type of finishing material as metal paint for exterior work: the main types of compositions used in suburban construction, their pros and cons, technical and operational characteristics. In the text you can find information that will help you choose the best dye, as well as prices for popular products.

Painting metal products is a necessary measure to extend the service life of the material, as well as preserve its attractive appearance and novelty for a long time. This process is accompanied by some difficulties, and the difficulties affect not the technology of applying the composition itself, but its choice. The dye must have the necessary set of performance characteristics, be resistant to the negative effects of external factors and retain its properties over a long period of time.

The following types of dyes are used to treat metal surfaces:

• nitro (NC, aerosol);
• pentaphthalic (PF);
• rubber;
• hammer;
• polymeric.

Each type of dye has certain advantages and disadvantages, and the inherent performance characteristics of the composition make it possible to accurately determine under what conditions the positive qualities of the coating will bring maximum benefit.

Properties of aerosol paint in cans for metal

Nitro composition for painting metal surfaces is produced by manufacturers in the form of aerosol cans. This type of dye is ideal for finishing small-sized products. Due to the fact that the composition is applied to surfaces by spraying, the likelihood of streaks that usually accompany the use of a roller or brush as a tool is eliminated.

To thin the paint, you can use chemical solvents of any brand. To achieve a strong shine, you need to buy metal paint for exterior use with a large number in the name. The higher the number, the more shine. Any tool can be used for application, including pneumatic and a regular brush. The only exception is rollers with foam coats. This type of material corrodes upon contact with CNC.

Interesting fact! Nitro dye is used as a refill for markers for drawing.

This type of dye is not suitable for processing large items. This is not only costly, but also comes with more disadvantages than advantages.

Advantages and disadvantages of paints in metal cans

Let's consider the disadvantages of nitro dyes intended for finishing metal products:

• low level of adhesion, which negatively affects the service life of the coating;
• toxic and unpleasant odor harmful to human health;
• low resistance to ultraviolet radiation;

• rapid fading of the shade in the sun;
• high consumption of metal paint per m2 of treated area;
• incompatibility with other types of dyes.

Due to the fact that the dyes in the cans contain chemical solvents, any type of coating of another type is corroded when NC is applied. In addition, the presence of such components becomes a source of toxic and pungent odors harmful to human health. Therefore, nitro dyes can only be used outdoors.

Advantages of nitro dyes:

• relatively low cost (significant savings can be achieved if you buy metal paint not in a can, but in a can);
• simple application technology regardless of method;
• the coating dries quickly;
• coloring can be carried out even at low temperatures;
• Old paint can be removed from metal using a regular solvent.

Properties, advantages and disadvantages of external paint for metal PF

Alkyd enamel is not only intended for painting metal. It is universal and can be used to finish other surfaces. The base of this paint allows it to be used in combination with other types of dyes and primers without fear of a bad reaction. To dilute the composition, you can use solvent and white spirit. It is possible to use gasoline, but in this case the coating will not be glossy or shiny.

Disadvantages of finishing material:

• the coating takes a long time to dry (at room temperature this will take about a day, and in cold weather it is impossible for the dye to dry completely);
• the low adhesive properties of the material force the use of appropriate primer;
• low quality coating;
• under the influence of ultraviolet light, the color quickly fades and loses its shine;
• After complete drying, the coating may change color.

Note! When adding coloring pigments to the composition yourself, you need to prepare the mixture with a reserve. If there is not enough paint, you will not be able to get the same shade in the second portion.

Advantages of PF compositions:

• high-quality dye retains its properties for many years;
• a simple application system allows you to do it yourself;
• the use of rollers with foam rubber coats is allowed, since the composition does not contain aggressive solvents that can corrode the tool;
• a wide selection of colors and the possibility of tinting;
• no need to use primer.

Solvent R-4 can be used as a paint remover from metal. It should be used very carefully, since the solution is aggressive and can cause chemical burns.

Properties, advantages and disadvantages of rubber black paint for metal

Rubber paints were invented as an alternative to bitumen compounds. The reason for this was the ugliness of the latter. Dyes based on natural bitumen resin form a dense and durable coating on metal surfaces. A similar finish is obtained when using rubber compounds, with the same properties, but with attractive external characteristics.

On sale there are not only matte black rubber paints for metal, but also compositions of other colors, for example, red, blue, green. These materials have several important advantages:

• high level of protection from external factors;
• resistance to mechanical damage;
• if necessary, the coating can be easily removed by using metal paint remover;
• can be used as a finish on galvanized surfaces, so the dye is suitable for protecting the roof;
• the composition fits perfectly on any type of surface;
• there is no conflict reaction to other dyes.

When painting with rubber dye with a matte surface outdoors, be sure to use protective equipment, since the mixture is toxic. If the composition comes into contact with the skin, irritation or an allergic reaction may occur.

Rubber coatings have few disadvantages, but they do exist:

• complex application technology;
• Not all application methods can be used for painting metal surfaces;
• it is difficult to obtain a uniform coating without gaps, but only under this condition will the dye provide a full level of protection;
• high price.

Types and properties of powder paints for metal

The range of manufacturers allows you to buy powder paints for metal in two categories:

1. Thermoplastic mixtures - during the formation of the film coating, no chemical transformations of the composition occur.
2. Thermosetting compounds - the coating is formed as a result of chemical processes.

Helpful advice! Thermosetting compounds are best used for processing metal parts of a vehicle, since this category of coating is aimed specifically at the automotive industry.

The price of powder paint for metal varies depending on the type of composition. This type of dye is presented in a huge variety.

• epoxy;
• epoxy-polyester;
• polyester;
• polyurethane;
• acrylate.

Why is it profitable to buy powder paint for exterior metal work:

• simple system of use and application;
• high hardening speed;
• economical consumption (the loss of conventional dye during operation sometimes reaches 40%, while the powder composition reaches 98% of the surface being treated);
• high level of coating strength;
• environmental friendliness;
• durability;
• excellent decorative properties.

Related article:

Types of anti-corrosion coatings, their application, popular brands, reviews and prices. Effective methods to combat rust.

Among the disadvantages, one can note only the need to use a separate container for each color, as well as limitations when painting non-standard objects and surfaces at low temperatures. Removal of the coating mechanically is carried out only from wood or plaster. In other cases, chemicals are used. You can use DOCKER S4 metal paint remover.

Advantages and disadvantages of 3 in 1 hammer paints for exterior metal work

Hammer effect dye is considered one of the most durable and resistant coatings. These three-component compositions form a specific pattern on the treated surface, reminiscent of blacksmith's embossing made with a hammer.

Advantages of hammer dyes:

• there is no need for preliminary thorough cleaning or priming of the surface;
• high rates of adhesion to metal surfaces;
• resistance to mechanical damage;
• invulnerability to moisture and ultraviolet radiation;
• the pronounced texture of the coating allows you to hide unevenness and defects of metal surfaces;
• wide range of colors;
• the coating retains its properties for many years;
• there is no need to frequently update the paint layer.

Helpful advice! To thin the paint, it is better to use xylene or a chemical solvent. The use of gasoline is allowed provided that the composition comes from a high-quality and reliable manufacturer. Only in this case the technical and operational characteristics of the coating will not be affected.

Disadvantages of hammer effect coating:

• high price;
• high consumption;
• the application system has certain nuances that complicate working with some objects;
• It is extremely difficult to remove the old coating.

Average prices of metal paints for exterior use

Having decided on the advantages and disadvantages of hammer, rubber, acrylic paints for metal and other coatings, do not forget about the prices. After all, the cost of the composition can influence the choice of material, as well as affect its pros and cons.

Average prices for metal dyes for outdoor use:

Choosing the best metal paint for exterior use

Of all the dyes that were previously listed, hammer-effect coatings have the highest performance in terms of basic quality criteria. In terms of external characteristics, the coating has similar features to rubber dyes, since both have a similar consistency. However, these materials have completely different compositions, and different binders are used for their manufacture.

The only significant disadvantage of hammer paint is the high price. Its use will be cost-effective only if a small surface is treated, because the application of this composition is accompanied by high consumption. If there are no financial restrictions, then hammer paint can be considered as an ideal option for finishing metal surfaces outdoors.

Important! Hammer paints must be used in combination with primer of the same brand. Provided that this requirement is maintained, the service life of the coating will be at least 20 years.

Comparative characteristics of dyes:

The table clearly shows the advantages and disadvantages of various types of dyes according to the main parameters, where 1 is the lowest and 4 is the highest.

Popular paints for galvanized metal for exterior use

Not every type of dye is suitable for finishing a galvanized metal surface. That is why there is a separate category of materials intended for these purposes. Moreover, such paints are produced both in the form of a powder, which requires dilution, and in the form of a ready-made mixture. The composition, which does not require preliminary preparation, is packaged in jars, buckets and aerosol cans.

According to consumer reviews, Tsikrol paint for galvanized metal is the most popular in this category. Buyers note the ease of use and high quality of the coating using any method of application, including brush, roller and airless devices.

No less in demand are Zinkomet compositions, which are noted by users as easy-to-use dyes with optimal parameters and cost. The only drawback is the limitations for applying coatings at low temperatures, but most users on the forums consider this nuance to be unimportant.

Basic colors are represented by a small number of shades, which usually include white, silver, black, brown and green. A special place is given to anti-corrosion silver paint for metal, the price of which is more than affordable.

Possibilities of Hammerite hammer paint on metal

Among hammer coatings, Hamerite metal paints from the manufacturer Akzo Nobel are especially popular, which offers customers a lot of advantages:

• protection of metal surfaces from corrosion damage both indoors and outdoors;
• a spectacular appearance is ensured by an unusual texture and a varied range of colors, including standard and exclusive shades;
• high level of adhesion even over rust and maintaining an attractive appearance for at least 8 years;
• operating temperature range is from -20 to +85°C.

Subject to short-term exposure to high temperatures, the coating will retain its attractiveness (up to +150°C). For at least 5 years, there will be no changes in color in the finish under the influence of UV. These and other numerous advantages have made Hammerite paint so popular in the market.

The modern range of paints and varnishes offers hundreds of quality finishing options. However, there is no universal composition. When choosing a finish, you should first of all be guided by the type of material of the surface being treated, budgetary options and the benefits that the dye can offer.

The mechanism of the appearance and growth of corrosion is simple. The unprotected surface of the metal, interacting with water and oxygen, begins to oxidize. Its structure changes, becomes loose and porous, and loses its visual appeal.

But external manifestations of corrosion are half the trouble. The pores of rusted metal attract moisture even more and better retain it inside, accelerating destructive processes. As a result, the product loses strength and its service life is reduced.

Conventional anti-corrosion paints and varnishes protect metal well from rust, creating a moisture-impermeable film on its surface. But in order for them to adhere well to the surface and perform their functions efficiently, the products must be cleaned of the destroyed layer before applying them, then covered with an anti-corrosion primer, and only after it has dried with paint.

The difference between rust paints and regular metal paints

Multi-stage processing takes too much time, requires large material and physical costs, which is not always justified. A less labor-intensive, and often more economically advantageous, way to protect metal has become the use of special paints that can be applied directly to the rust, bypassing the preparatory stages.

Packages with this paint are marked “3 in 1”. This means that the composition performs three functions at once:

• converts rust particles;
• primes the surface;
• creates a monolithic decorative waterproof layer on it, which is also resistant to various chemical compounds.

Rust paint has several important advantages, many of which are not available in conventional decorative compositions intended for metal products.

1. It can be applied to metal already affected by corrosion. It is not necessary to completely remove the rust to expose the intact layer.
2. The protective layer created by the paint repels not only water, but also dirt, maintaining the neat appearance of the product.
3. Such compositions are characterized by high adhesion - they stick well to the damaged surface and create a uniform covering layer on it.
4. The service life of such coating is usually very long - from 3 to 15 years. It depends on the composition and manufacturer.

Like regular decorative coatings, paints that can be applied directly to rust are available in a wide variety of colors and shades.

Types of anti-corrosion paints: composition

The properties and scope of application of rust paints are determined by their composition. And mainly - the type of base. Based on this criterion, they are divided into oil, alkyd, acrylic, and epoxy.

Find out how to paint a ceiling, and also check out the characteristics, advantages and preparatory work in a special article on our portal.

Prices for anti-corrosion paints

Anti-corrosion paints

Types of paints: method of application

The consumption of paint compositions depends on the method of application. This can be done using the traditional method - with a roller or brush. If the paint can be sprayed with a spray gun, its consumption is reduced to 20-30%. And aerosol paints in spray cans are characterized by increased consumption.

The choice of method depends on the type of surface to be painted. For example, solid metal parts with a large area to be painted can be painted as desired, but openwork parts are more convenient to spray paint on. It is also easier to paint hard-to-reach places with a spray bottle.

Note. If the surface is properly prepared and the painting conditions are observed, the durability of the finished coating will be the same regardless of the method of applying the paint.

Popular rust paints

Among the many brands of special rust paints, there are those that are especially popular. It is determined not only by positive customer reviews, but also by sales volume.

Hammerite

This brand is a confident leader, despite its fairly decent price. This is due to the quality of the coating, its durability, beautiful texture and versatility. Hammerite anti-corrosion paints are used for decorative finishing of ferrous, galvanized and non-ferrous metals, wood, and plastic. They are used for finishing external and internal structures. Apply to new and previously painted surfaces.

When choosing paint of this brand, you should pay attention to the series.

"Lakra" Hammer Effect

Another effective protective agent with a hammer consistency. Made on an alkyd-styrene base, it is characterized by its low price and good adhesion to metal surfaces with a rust layer thickness of up to 0.1 mm. It can also be used for painting wooden structures, creating a coating with a metallic sheen on them.

"Lakra" Hammer Effect

Universal paint from the well-known company Caparol for decorating metal surfaces indoors and outdoors. It is easy to apply and has good resistance to fading.

"Nerzhamet"

Alkyd paint Nerzhamet is available in regular form and in aerosol cans. It contains polymer inclusions, is very easy to apply, dries quickly and adheres well to the rust-affected surface, forming a hard semi-gloss film. Its service life without the need to renew the coating is six years.

"Prestige". Primer-enamel

Another inexpensive domestic product, characterized by a high drying speed, high resistance to moisture and other aggressive environments, and economical consumption of a maximum of 120 grams per square meter. Diluted with solvents such as xylene or P-4 to the desired consistency.

"Prestige". Primer-enamel

This paint is actively used for finishing galvanized metal roofs, external pipelines and fences.

"Stop rust"

Like most other alkyd enamels, this composition can be applied by any means. Available in packaging of different volumes: buckets, jars, aerosol cans. It is used to paint external structures made of steel and cast iron, including those with old paintwork. Penetrates well into the deteriorating metal structure and blocks the spread of rust.

"Stop rust"

"Cycrol"

Even galvanized steel, when exposed to precipitation, sunlight and aggressive impurities in the air, will corrode over time. To protect it, a special 3 in 1 product “Tsikrol” has been developed, which has high adhesion to such surfaces.

It consists of acrylic resins, organic-based solvents and additives that increase the resistance of the enamel to wear, moisture, low temperatures, corrosion and other atmospheric influences. It has good coverage, water-repellent properties and the ability to dry quickly after application.

Advice. The paint contains volatile toxins that evaporate into the air from the fresh, not dried composition. Therefore, while working with this product, it is necessary to protect the respiratory system and skin.

Heat-resistant paints

Not all rust paints can withstand high temperatures. They are designed for heating no higher than 40-60 degrees. But metal structures such as stoves, barbecues, fireplaces, pipes and radiators, car parts and other equipment also need protection from corrosion.

To decorate them you need to use heat-resistant and heat-resistant paints. The degree of their stability is determined by the composition of the components. Among these dyes there are also several different types.

Types of heat-resistant paints	Composition and application
	Alkyd paints with the addition of zinc and phosphate compounds are designed to withstand temperatures up to 100 degrees. They can be used to paint heating system elements - radiators and pipes that do not heat above 90 degrees.
	Epoxy compounds can withstand temperatures up to 200 degrees. Some of them require an anti-corrosion primer to be applied. Can be used to create a protective coating on components and parts of technical equipment.
	Epoxy ester and ethyl silicate paint compositions with metal powder as additives can withstand a maximum temperature of 400 degrees. And one-component silicone based on polymer resins - up to 650 degrees. These are suitable paints for the protective and decorative finishing of outdoor barbecues.
	The most heat-resistant paints contain particles of composite materials and heat-resistant glass. They are used to paint metal stoves and fireplaces that can heat up to 800-1000 degrees.

Prices for heat-resistant paints

Heat-resistant paints

It is important! In the vast majority of cases, all these structures should be painted in a cold state, and heated after the coating has completely dried. Although there are paints that require heat to polymerize. Therefore, carefully read the instructions with recommendations for use.

Decorating metal structures using rust paint

Three-in-one metal paints can be applied to any metal structures, even those damaged by corrosion. In this case, pre-treatment with a special primer is not necessary, because such paints already have the properties of this composition. In addition, they convert rust into a monolithic layer and are excellent decorative materials.

Thanks to these features, painting any metal structures with such paint is much easier than with conventional compositions that require careful preliminary preparation of the metal surface.

Regardless of the application method, the work procedure consists of only a few steps.

Step 1.The metal surface is cleaned from dirt and the flaking upper rusty layer using a stiff brush, spatula or sandpaper with coarse abrasive.

Step 2.The cleaned product is wiped with a solvent, moistening a cloth or sponge in it. And let it dry.

Step 3.Preparing the paint involves mixing it thoroughly. Or shaking the can if using an aerosol. It is advisable to rub a brush with natural bristles on sandpaper so that poorly adhering bristles fall out and do not remain on the paint coating.

Step 4.The paint is applied to the surface in an even layer and allowed to dry for the time specified in the instructions.

Step 5.Then apply a second layer, trying to avoid drips.

If the paint is applied or sprayed from a can, then more layers will be required - at least three. Between them it is necessary to observe a time interval for drying.

Prices for paint sprayers

Spray gun

The can or gun should be shaken before work and periodically during work, and the sprayer should be kept at a distance of 20 cm from the surface to be painted.

The modern market of finishing materials is constantly updated with new products that simplify the work of finishers and have improved decorative and operational characteristics. Rust paint is a prime example of such innovation.

Video - 3 in 1 rust paint

Today's construction market offers customers a wide selection of different materials for metal processing. In this regard, homeowners often have the question of which metal paint is best. To answer this, you need to understand the types of such products and their properties.

Main types of paints for metal

Alkyd paints

They are divided into two subspecies:

• oil compositions– their basis is drying oil, which is usually made from natural oils. Such mixtures are suitable only for interior work, and they are not suitable for exterior decoration. The fact is that under the influence of sunlight, such a surface gradually fades and becomes covered with cracks. In addition, rust continues to progress underneath;

• enamels– do not tolerate high temperatures and are flammable. But, at the same time, they have high adhesiveness.

In the photo - enamel for a metal surface

Acrylic paints

They began to be used for coloring metals relatively recently. But they have already gained considerable popularity. This is explained by the fact that this coating is very durable. In addition, it is not subject to cracking, fading and provides good protection against corrosion.

Another plus is that it can withstand high temperatures. Therefore, it can be used to treat radiators of heating systems.

The next advantages are environmental friendliness and non-flammability. This mixture does not have an unpleasant odor and can be washed off hands and tools with plain water until it dries. Thus, it is about this that we can say that this is the best paint for metal.

Choosing paint for metal

When choosing a suitable paint composition for a metal surface, you must first decide whether it will be exposed to high temperatures. It should be noted that alkyd mixtures can withstand no more than 80°C, acrylic mixtures - up to 120°C.

There are also specialized compounds that can withstand very high temperatures. In particular, these include epoxy-bitumen solutions and products based on silicone resins. The first of them are designed for temperatures up to 400°C, the second – up to 600°C.

Note! For interior work, choose acrylic compounds. They are safe for health and do not have a strong odor.

As for external work, enamels are quite suitable for them. They are toxic, but at the same time they fit well on a metal surface. To protect against corrosion, primer enamels can also be used.

Advice! When purchasing Russian-made materials, give preference to those that are manufactured in accordance with state standards. Metal paint according to GOST, as a rule, has higher performance characteristics and good quality.

Popular brands of metal paints

Tikkurila

Products manufactured under this name are invariably very popular among home craftsmen. The coating formed by such materials has good wear resistance. It also perfectly tolerates the effects of lubricating oils and various fats.

This brand produces compounds intended for both internal and external work. For the first of them, paint consumption per 1 m2 of metal is 1 liter per 8-10 m², for the second - 1 liter per 10-14 m².

Tikkurila's product range also includes heat-resistant mixtures. They are able to withstand temperatures up to 400°C.

Hamerite

The metal coating produced under this brand can be applied directly to rust. No preliminary cleaning or priming of the surface is required.

This composition is equally suitable for both ferrous and non-ferrous metals. It has a wide palette of colors. Thanks to this, each homeowner will be able to choose the tone that suits them.

In addition to rust, such a coating can be applied to a surface painted with almost any composition. The only exceptions are bitumen or powder mixtures.

To summarize, it should be noted that Hamerite has only one drawback. This is its high price.

Novbytkhim

This manufacturer produces 3 in 1 primer-enamel, which is intended for metal. This composition is not only decorative, but also a protective coating. Therefore, it can be applied to rust-covered coatings without prior preparation or priming.

The paint consumption rate per 1 m2 for metal in this case is from 80 to 120 ml/m2. Of course, this is subject to application of the coating in one layer. With a larger number, the material consumption will increase manifold.

This composition is used for. Moreover, it can be applied to both matte and glossy surfaces.

The coating obtained with its help is resistant to sudden temperature changes and other adverse environmental influences. In addition, it dries quickly and can be applied at temperatures down to -10°C.

Advice! Do not use this primer-enamel for heating surfaces, as well as those that have been painted with nitro enamel. In the first case, an unpleasant odor may appear, and in the second, swelling of the applied coating may occur.

Metal painting

Surface preparation

In order for the applied composition to last long enough on the metal surface, it must be carefully prepared. First of all, clean it with your own hands from rust, dirt and old, peeling coating.

To do this, you will need a wire brush, scraper or sandpaper. A warm soapy solution will help you remove soot and other contaminants. After finishing the work, the surface is washed with clean water and dried.

Advice! You can quickly clean a large surface using an oxy-acetylene torch. In its flame, the old coating will simply burn, and rust and combustion products will peel off.

Padding

Treating metal with a primer allows you to achieve two goals:

• additional anti-corrosion protection - the soil is actually a barrier to corrosion and plays the role of a rust converter;
• improving adhesion – .

It should be taken into account that different metals require different primers:

• for black – those that provide maximum anti-corrosion protection;
• for colored ones - giving the best adhesion.

The instructions supplied with it will help you understand the purpose and features of a particular primer. As for the application of this material, it is usually done using a roller or brush. In some cases, it is possible to use methods such as dipping and pouring.