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» Exterior paint for metal - choose the right material. Which rust paint is best Which rust paint is best for cars

Exterior paint for metal - choose the right material. Which rust paint is best Which rust paint is best for cars

Everyone knows what “rust” is, even children. In appearance, you can’t confuse it with anything. But, unfortunately, the loss of an attractive appearance by metal structures is far from the biggest nuisance associated with the appearance of ugly flaky red spots. Much worse is that rusting is a corrosive process that destroys the structure of the metal.

If you let everything take its course and do not deal with rust, then metal products and structures are destroyed quite quickly, while losing their bearing capacity. Of course, it is best to prevent the appearance of corrosion of the metal, in a timely manner protecting it from moisture and exposure to other substances that can lead to the rapid appearance of rust. But what if it has already appeared? Is it possible to stop the corrosion process at the initial stage? And, if possible, how?

The simplest and accessible way in this situation, it is the isolation of the metal surface from the factors that cause corrosion - the application of a protective coating on it.

That is why all metal parts are usually painted.

But are all paints equally effective in protecting a surface that has already been corroded to some extent? No, not all. Especially if the structure is in the open air - that is, it is constantly exposed to negative influences.

Types of paint and varnish compositions for protecting metal from corrosion

We will consider only those compositions that are intended not just for painting metal, but specifically for protecting it from corrosion, including the one that has already begun.

The compositions of this purpose can be divided into three groups:

  • anticorrosive;
  • rust paints;
  • hammer.

Anti-corrosion compounds designed to protect the metal from the damaging effects of oxygen and moisture, which are the cause of rust.

There are several types of such paints:

  • Insulating - form a high-strength film and can effectively protect the metal from the effects of the atmosphere. Most often, the basis of such mixtures is lead or iron minium. The drying time of the paint depends on its composition and may vary from manufacturer to manufacturer.
  • Passivating - used where there are already visible traces of corrosion. Due to special components, such paint is able to slow down the oxidation of the metal and even stop it completely. These compositions are well suited for the protection of structures exposed to constant moisture.
  • Phosphating - contain phosphoric acid and passivating additives. After painting, a wear-resistant layer is formed on the surface of the metal, protecting it from further rusting.

It should be noted that all anti-corrosion paints are used only for surfaces with minimal traces of corrosion.

rust paints usually not those parts of the structure that already have obvious signs of oxidation are applied. The use of such paints avoids the long and costly process of preparing a rusty surface for painting.

These compounds are also divided into several types:

  • Paint primer converter. Used to protect surfaces affected by corrosion. They include orthophosphoric acid, which, reacting with iron oxide, forms a layer that is not subject to further destruction. If the damage to the metal was minimal before, then this coloring allows you to almost completely restore it.
  • Inhibiting compositions - simultaneously act as a primer and enamel. The paint reacts with rust, forming a durable coating on the surface. It has good adhesion, but requires thorough impregnation of the base to be painted, which leads to a significant consumption of the mixture.
  • Stabilizing compositions - designed to prevent further destruction of corrosion-damaged sections of the structure.

hammer paints contain aluminum powder and glass ( fine fraction). They also contain silicone oil. The paints have excellent adhesion and are well suited for painting metal, both in need of anti-corrosion protection and with traces of rust.

These compositions are remarkable in that they give the surface a high decorative effect. Hammer paints have a wide color scheme, dry quickly, but require strict implementation of the application technology.

Paint selection

In order to make the right choice of the coloring composition that you are going to use for protection metal structures located outdoors, certain factors must be taken into account.

The following factors are taken into account:

  • The type of surface to be painted. The metal from which the structure is made can have a different composition and or be protected, for example, by galvanization, which can only be processed with certain paints. Always carefully read the instructions for the selected paint - for which metals it can be used.
  • Frost resistance - the composition for outdoor use must be frost-resistant. Otherwise protective film it will be short-lived and will not be able to perform its functions.
  • Paint Consumption - Always keep in mind that a rusty surface will require more paint than normal.
  • Manufacturer - always give preference to reliable manufacturers. Their products are usually a little more expensive, but they usually always justify their price.
  • Price - different kinds Paints have different prices. The most inexpensive are paints for metal, which have a simple composition and a minimal anti-corrosion effect. They are the most affordable. Next in the price range are paints that prevent or stop corrosion. The most expensive are paints that can be applied directly to rust with little to no surface preparation.

If the surface has minimal traces of corrosion, then inexpensive compounds can be used. If the degree of damage is 35-40%, then you need to purchase more effective (and therefore more expensive) paints.

If it is not possible to buy a highly effective expensive compound, then you can go the other way: purchase an inexpensive anti-corrosion paint, but apply it only after treating the metal surface with a rust converter and modifier primer.

Very important: paint containers must be labeled as "weather resistant".

Surface preparation and painting

Depending on the type of paint chosen, surface preparation for painting may vary, so consider different options.

If it is decided to use anti-corrosion paint, proceed as follows:

  • Removal of old paint from the surface. If this is not done, then a new layer of paint will not be able to provide adequate protection.
  • After cleaning the metal from paint, it is necessary to assess the degree of damage to the surface of the structure by rust. If there are traces of corrosion, they must be removed to an undamaged base with abrasive products, since ordinary paint cannot convert rust.
  • Next, the metal is degreased.
  • It is also advisable to treat the surface with an appropriate primer (check the instructions that come with the paint, often it will indicate which primers can be used to pre-treat the substrate).

If you have purchased a surface coating for rust:

  • First you need to remove dust and dirt from the surface of the metal structure.
  • Next, you need to determine the degree of damage to the metal by corrosion.
  • Although the composition can be applied directly to rust, best result allows you to achieve preliminary cleaning of swollen and exfoliating metal areas.
  • For cleaning, you can use abrasive tools, surface sandblasting, a special rust remover, or even pressure washing.
  • Next, the base must be dried and degreased (if necessary).

You can paint metal in different ways - with a brush, roller, spray gun. The main thing here is the requirement of the most even distribution of paint over the surface.

Coloring is carried out according to the instructions given on the can of paint. Usually it is made for 2-4 layers with intermediate drying of each of them.

Such colorful compositions dry quite quickly - from half an hour to several hours.

Among the many compositions for protecting metal, there are the most popular, proven by experts and ordinary consumers.

These include the following:

  • "Nerjamet" - a composition with excellent adhesion and hiding power, dries quickly. Made on the basis of alkyd resins, organic solvents and polymer additives. The paint has a convenient application technology and a service life of up to 6 years. Forms a semi-gloss film on the metal surface. Simultaneously performs three functions ("3 in 1"): anti-corrosion primer, rust converter, durable enamel.
  • Hammerite - represented by two series: smooth coatings and hammer compositions. Can be used for painting black, non-ferrous and galvanized metal structures. It is also a 3 in 1 product. The paint forms an even coating, which contains additives that neutralize the effect of rust on the metal.
  • "Cycrol" (enamel) - used for painting galvanized products. It has high adhesion, good tolerance to low temperatures, resists moisture and corrosion.
  • "Alpina" - paint "3 in 1" - does not require the use of a primer and anti-corrosion materials. The composition is based on alkyd resins and active pigments. The paint dries quickly, forming a strong and durable film.
  • "Rzhavoyed" - a universal composition (enamel + primer), stops corrosion and protects the metal from rust.

All these rust paints have the following advantages:

  • the ability to apply directly to a rusty surface without prior cleaning;
  • adhere well to the base;
  • form a uniform coating impervious to water and dirt;
  • stop corrosion;
  • dry quickly;
  • quite durable - the service life is 6-8 years.

Thus, there are a sufficient number of paint compositions on the market that can protect metal products and structures from corrosion, as well as stop it.

The cost of paints marked "for rust" is higher than conventional anti-corrosion compounds, but their use can reduce the time of work, as well as reliably protect metal parts from destruction.

To achieve the best result, it is required to select paints not only according to performance characteristics, but also according to the types of metal and alloys. With development chemical industry alkyd and epoxy-based paints with rust converters appeared, with a more dense and high-quality protective coating. Metal products are pre-treated with a primer with zinc compounds to prevent corrosion processes.

There is a wide variety of these compounds on the market, it is important to make the right choice of paint in order to avoid the problems shown in the video:

Purpose of the article: give an idea of existing types LKP for metal, manufacturers and the use of compositions in specific operating conditions, help the consumer choose high-quality and efficient products.

Characteristics

Modern paint coatings are the result of numerous studies of compositions in practice after the introduction of various additives into the mixture that improve the protective coating. The main physical and chemical characteristics of paints are given in the tables.

The main characteristics of paints for metal
Comparison criterion Option Note
Based on composition oil (MA) Marking MA indicates the use of vegetable oils in the composition, in particular natural drying oil. Oil paint is used indoors, as it has poor resistance to seasonal temperature changes in the air. A feature of the paint is that the created layer does not let air through to the metal surface. It's good for coloring water pipes indoors, but due to the lack of gas exchange (the paint hermetically closes the metal surface), it is necessary to renew the coating once a year, as the layer peels off.
Epoxy (EP) The paint is intended for use on non-domestic products (car body, oil pipelines, pipelines of alkalis, gas, acids), since the epoxy resins included in the composition have a toxic effect on the human body. The protective coating withstands high temperatures without destroying the layer.
Alkyd (PF and GF) It has a high degree of adhesion and is used for zinc-coated metals. The composition is applied easily with the formation of an alkyd film resistant to physical and chemical influences. They do not withstand high temperatures well. Suitable for painting galvanized iron (roofing), pipelines and fittings with zinc coating.
Acrylic (AK) The composition includes polyacrylates (polymers of acrylic acids) with high heat resistance. Thanks to these polymers, the coatings are weatherproof and resistant to intense ultraviolet solar radiation. The paint withstands high temperature conditions without cracking and deformation of the layer. Refers to water-based compositions, non-toxic. Substances that prevent the development of corrosion are added to the composition. Acrylic paint is used to paint heating radiators, metal interior elements for long-term preservation appearance (resistant to physical impact).
hammer (ML) ML - Pigments in a mixture of solutions of synthetic resins with the addition of a solvent. The so-called "hammer effect" forms embossed patterns on the painted surface. Hammer paints are used for rust protection and finishing: fences and gates, garden furniture and metal gratings.
Chemical-physical properties Viscosity The viscosity index affects the method of applying the composition to the surface (spray gun, brush, roller). With an incorrectly selected viscosity, the quality of work and the strength of the protective coating are reduced. Domestic manufacturers indicate the viscosity of the dye in seconds; for imported materials, another unit of measurement is typical - DIN. The optimal viscosity of the dye, primer or varnish is usually indicated by the manufacturer on the packaging. Most of the compositions, unless otherwise specified by the manufacturer, are intended for painting with a brush or roller. For a roller and a brush, the viscosity of the paint is 18-22 sec or 30 DIN (usually in cans, the composition is already ready for use with this particular tool). Before painting with an airbrush, they are diluted to the consistency of fat milk with a solvent intended for this paint (50 sec or 80 DIN).
hiding power Spreading power is expressed in kg / m² or ml / m², some manufacturers give more understandable values ​​\u200b\u200b- how much square meters can be covered with a liter of paint m²/l. The property of the composition to overlap the previous layer depends on this indicator. The higher this indicator, the lower the paint consumption rate. High-quality paints are able to cope with the task in one layer application cycle. One coat for a well prepared surface is 120 ml/m² or 12 m²/l.
Density For various surfaces there are own recommendations for the density of paints. For smooth metals one liter of paint per 14-16 m², for rough metals one liter per 6-10 m²
Drying speed The drying rate is affected by the basis of the composition. Alkyd compositions with light fractions of solvents dry the fastest, polyurethane enamels (more viscous) a little longer, followed by water-based compositions. The longest time is to wait for the oil paint on natural oils to dry.

There are standardized designations for all paints. Here is the decryption:

Metal paint marking
Designation Alphabetic and numeric designation
Base (film-forming substance) MA (oil); PF and GF (alkyd); AK (acrylic); BT (bituminous); KCh (rubber); EP (epoxy);

NC (nitrocellulose).

Type and application of the composition 1 - outdoor use (weather resistant); 2 - indoor use (limited weather resistance); 3 - conservation products for protective work; 4 - water resistant; 5 - enamels; 6 - gasoline and oil resistant;

7 - chemically stable;

8 - heat-resistant;

9 - electrical insulating;

For example, alkyd enamel PF-115. The letter designation “PF” indicates that the enamel is made on the basis of a pentaphthalic binder, the first digit 1 is for external use, 15 is a catalog number. Labeling of imported paints and paints and varnishes differs from the system described above, but the information required by the user must be indicated on the label without fail and in Russian.

We invite you to familiarize yourself with the offers of paint manufacturers and the range of the most common compositions. The products of these brands meet quality standards and meet the declared characteristics.

1. Alpina (Germany)

The company's products are characterized by good hiding power and adhesion to the surface, which guarantees an excellent coating that is resistant to physical and chemical influences. Alpina is known in Russia as a manufacturer of high quality premium products.

Application impressions: When coating products, the paint lays down evenly and does not drain, as is the case with oil formulations. Accordingly, the consumption is small and you can focus on its indicator, which is placed in the information on the label of the can. Rust paint, after application, has a slightly brighter shade, but after 2-3 days it becomes identical to the color indicated by the manufacturer. The composition converts rust well, but minimal preparation is required - light cleaning of the surface and degreasing.

Characteristics of Alpina formulations. Table 1
Characteristics Alpina Weisslack Alpina Heizkorper Alpina Aqua Weisslack Alpina Aqua Heizkorper
Application area White enamel is used indoors and outdoors. Due to its particularly high stability, it is particularly suitable for use on wood and metal surfaces subjected to constant stress. White enamel with high hiding power, resistant to high temperatures up to 100 degrees. It is used for painting heating radiators and metal pipes. White enamel is made on water based and therefore can be used indoors for painting metal and wood surfaces. Water-soluble enamel for heating radiators and metal products, odorless and dries quickly. Tinted in any chosen color.
Gloss degree Glossy or silky matte. Glossy. Glossy, silky matte. Glossy
Packing, liter 0,75; 2,5. 0,75; 2,5. 0,75; 2,5. 0,75; 2,5.
Consumption 80-100 ml/m² per coat 90-120 ml/m² per coat 120 ml/m² per coat 120 ml/m² per coat
Price, rub/l 520-800 720-1060 820-1030 710-1060
The cost of covering 1 m² 50-80 rub. 70-100 rub. 100-125 rub. 85-125 rub.
Characteristics of Alpina formulations. table 2
Characteristics Alpina Buntlack Alpina Direct auf Rost Alpina Direkt auf Rost Hammerschlageffekt Alpina Grundierung fur Metall
Application area Colored enamel for metal and wood, scratch-resistant coating, tinted according to selected shades. The base composition is creamy white. Hammer enamel is applied directly to rust and provides long-term protection against manifestations of corrosive processes. Green color. A special enamel that combines four properties: excellent anti-corrosion primer, long-term rust protection, dirt-repellent top coat and hammer effect. Anti-corrosion primer, optimum rust protection for radiators, railings, garage doors and other iron and steel items, as well as the basis for a high quality and durable metal coating.
Gloss degree Glossy silky matte. Glossy. Glossy. Matte.
Packing, liter 0,75; 2,5;10. 0,75; 2,5. 0,75; 2,5. 0,75; 2,5.
Consumption 80-100 ml/m² per coat 100-120 ml/m² per coat 90 ml/m² per coat 80-100 ml/m² per coat
Price, rub/l 550-890 600-900 700-1000 1040-1200
The cost of covering 1 m² 55-89 rub. 70-100 rub. 90-120 rub. 125 rub.

Program experts Test purchase» check the properties of enamel on metal and confirm the declared quality of the paint:

2. Dufa (Germany)


Products under the brand name Dufa have been produced since 1955 in Germany. For all the time of its activity, the company focuses on the production of environmentally friendly products with consistently high consumer characteristics. The latest technology in the field of corrosion inhibitors (substances that slow down or stop the corrosion process) and innovative developments in the field of particle distribution in emulsions, have allowed the company to become one of the largest companies in Germany.

Application impressions: Dufa has good adhesion to the metal surface, for example, during mechanical shocks, the protective layer does not chip off over large areas, damage is localized only at the point of impact. This characteristic is provided by specialized additives of resins and plasticizers, which maintain the elasticity of the layer.

Characteristics of Dufa formulations
Characteristics Dufa Retail Enamel METALL Premium HAMMERLACK Düfa Premium HAMMERLACK hammer
Application area Designed for painting large-sized metal and steel structures, agricultural machinery and machine parts. Enamel can be used as a primer under weatherproof enamels in multilayer coating systems 3 in 1 system: primer, corrosion protection and enamel. Easy to apply, has high adhesion to the base. Forms elastic, moisture-resistant, weather-resistant, wear-resistant coatings. 3 in 1 system: primer, corrosion protection and enamel. Resistant to moisture and temperature conditions. Good resistance to household chemicals and short-term exposure to motor fuels and oils.
Gloss degree Semi-matte Glossy. Glossy.
Packing, liter 0,75; 2,5. 0,75; 2,5. 0,75; 2,5.
Consumption 12 m²/l 7 m²/l 7 m²/l
Price, rub/l 400-520 740-860 600-800
The cost of covering 1 m² 30-45 rub. 105-120 rub. 115 rub.

Hammerlack 3-in-1 Iron Enamel solves the problem of painting items with signs of corrosion. Enamel does not require pre-priming, protects iron from rust and gives the product a beautiful finish. appearance:

3. Hammerite (Netherlands)

Hammerite is produced by the world famous concern AkzoNobel, which is based in the Netherlands. With constant periodicity, the company offers new products to the market to protect metal from atmospheric manifestations and other physical influences. All formulations meet stringent quality requirements.

Application impressions: The paint is an expensive composition, so it is best to use it where other compositions will show the worst result. From my experience with Rust Beater, it turns out that it is simply indispensable for street fences, metal parts of greenhouses and plumbing. The composition "sticks" to the surface tightly, does not chip off, dries in 1 hour. The fence posts were painted 10 years ago and still do not require updating. At the same time, the oil paint on the poles for the gas pipeline moved away from the metal in the second year.

Characteristics and scope of Hammerite formulations
Characteristics Special Metals Primer Hammer effect paint for metal surfaces Paint for metal surfaces smooth glossy and semi-gloss Anti-corrosion primer for ferrous metal surfaces Rust Beater
Application area Primer for non-ferrous metals and glass. Suitable for priming galvanized, aluminium, chrome, brass, copper, galvanized surfaces and stainless steel structures. Paint for internal and external works. Suitable for application to rusty unpainted and previously painted ferrous metal surfaces. Suitable for application to rusty unpainted and previously painted ferrous metal surfaces. The paint creates a weatherproof and water-repellent smooth finish even on rusty metal. Designed for priming surfaces of ferrous metals in rainy and seaside areas, places with high humidity(e.g. basements, greenhouses).
Gloss degree Matte. Molotkovaya. Glossy and semi-matt Matte.
Packing, liter 0,25; 0,5; 2,5. 0,25; 0,5; 0,75; 2,5; 5; 20. 0,25; 0,5; 0,75; 2,5; 5; 20. 0,25; 2,5.
Consumption 16 m²/l 10 m²/l 10 m²/l 12 m²/l
Price, rub/l 1000-1200 1000-1600 960-1500 1200-1400
The cost of covering 1 m² 60-75 rub. 100-160 rub. 96-150 rub. 100-120 rub.

Video on the use of Hammerite brand paints for painting surfaces made of various metals:

4. TEX (Russia)


The Russian manufacturer TEX is aimed at the mass consumer. It produces paints and compositions according to its own developments, the research of which is carried out in certified laboratories. At the enterprise there is and actively works quality control of production.

Application impressions: I had to use paint for garage doors, which about 15 years ago were covered with oil paint of an incomprehensible color, rust appeared on almost all surfaces. I used RustySTOP Pro after passing over the surface with an emery wheel. I cleaned superficially, without fanaticism, but the paint lay down surprisingly tightly. A year later, I noticed delamination in two places, but not critical. Apparently it will have to be updated every three years, but the paint is inexpensive and does not hit the pocket.

Characteristics of enamels and primers for protection against rust TEX
Characteristics Enamel-primer acrylic anticorrosive Station wagon Enamel primer RustySTOP Pro Anticorrosive primer GF-021 Station wagon Primer anticorrosive "Optimum"
Application area Designed for painting steel and cast iron surfaces used indoors and outdoors (metal structures, garages, fences, gratings) on rust-free metal. Designed for painting steel and cast iron surfaces with remnants of tightly adhering rust, used in atmospheric conditions (metal structures, garages, fences, gratings), and indoors. For priming metal surfaces for coating with alkyd enamels and oil paints For outdoor and internal works, for priming metal surfaces, for coating with alkyd enamels and oil paints
Gloss degree Matte. Glossy and semi-gloss Matte. Matte.
Packing, liter 0,9; 2,7. 0,5; 0,9; 2; 10. 1; 2,5; 24. 0,8; 1,8; 2,7; 20.
Consumption 14 m²/l 15 m²/l 15 m²/l 13 m²/l
Price, rub/l 260-280 300-350 90-150 140-150
The cost of covering 1 m² 20 rub. 20-22 rub. 6-15 rub. 10-12 rub.

Tests RustSTOP Pro, applying the composition with a hammer effect on a metal surface:

5. Krasko (Russia)


One of the main activities of the Company is the production and promotion of exclusive paints and varnishes on the construction market under its own trademarks. The KrasCo company develops products that are in no way inferior to foreign analogues. All paint and varnish products (varnish) are produced on the latest high-tech equipment, using the best imported and domestic raw materials.

Application impressions: Of all the compositions of the line of this manufacturer, I was most impressed with Aquametallic. I had to paint black metal plumbing pipes in the basement country house. The difficulty was that it was impossible to turn off the water on the pipes, condensate accumulated and, accordingly, wet, loose rust. I wiped the pipes with a rag and immediately painted without much hope for a result. However, the paint lay down very well. Of course, the appearance of the painted pipes turned out to be not very good, but the protection is done. The composition keeps on the pipes without peeling for 3 years. The basement was cramped, without ventilation, and I was pleased that there was practically no smell.

Characteristics of the compositions "Krasko"
Characteristics stainless steel Rapid Thrower Nerzhaplast Aqua metallic
Application area Anticorrosive paint for metal, alkyd-urethane rust 3 in 1 Anticorrosive quick-drying paint, winter primer-enamel on rust for painting ferrous metal. Used as a stand-alone coating, as well as in integrated system with phosphating primer Phosphoprimer, which allows to increase the service life of the coating. Aquametallic is used to protect steel, cast iron and other ferrous metal surfaces. Without smell.
Gloss degree semi-gloss Semi-matte Matte Semi-matte
Packing, liter 0,9; 3; 10; 20. 0,9; 3; 10; 20. 0,9; 3; 10; 20. 3; 10; 20.
Consumption 5-7 m²/l 5-10 m²/l 7 m²/l 8-10 m²/l
Price, rub/l 380-500 320-490 300-420 380-420
The cost of covering 1 m² 50-100 rub. 50-70 rub. 40-90 rub. 30-40 rub.

Checking the parameters and characteristics of Bystromet declared by the consumer:

Editor's Choice

The most suitable products for private use (external and internal work), we consider paints for metal of the line Hammerite. These compounds can be used in a single coat with good surface preparation, contain additives that improve the properties of the coating and are in the middle price range.

Frequently asked Questions

We have selected 5 popular questions and tried to answer them in as much detail as possible. Didn't find your question among the ones listed below? Feel free to ask it in the comments to the article!

1. Do I need to prepare the surface and clean for applying paint if the product is rusty and has some defects? How do rust removers work?

The composition of paints "for rust" includes fatty acid, which neutralize the process of rust spreading, and the protective layer preserves the product. But, since the surface of the metal with traces of rust is porous, it is better to do a little metal preparation. To do this, pass sandpaper over the surface or other abrasive material, wipe the product dry with a rag and degrease with acetone or alcohol.

2. How does paint density affect consumption? What other indicators of paints should be taken into account when calculating the consumption?

The higher the density of the paint, the stronger and completely the initial surface of the metal will overlap. Covering power is indicated by the manufacturer for ideal conditions, so it is better to take a correction factor of 1.3 (multiplication of the calculated amount of the composition). In this case, we can accurately calculate the flow. But, even the best paint will not cover the initial surface in one layer, only if it is a new product without flaws.

3. It is necessary to paint a surface that heats up to significant temperatures (metal oven). What kind of high-temperature paint can be used, and how do they differ from conventional enamels?

When choosing a heat-resistant paint, we focus on the operating temperature indicator at which the coating will not collapse and retain its original characteristics. On average, the compositions withstand 400-600 ° C, which is enough for painting metal furnace. Paint with silicone resins is suitable for your case.

4. How to remove old paint from metal surfaces?

There are three main ways to remove old paint from metal surfaces. First, the mechanical way. The layer is removed with an abrasive, but the effect can only be obtained on relatively flat surfaces.

Good results are obtained when using cord brushes on a drill or petal emery wheels on a grinder. Carefully look at the designations on the brushes for maximum speed, use thick canvas gloves, goggles and a respirator or protective mask.

Secondly, chemical method. Buy a gel or liquid composition, which is designed for these purposes and applied to the surface with a brush. The composition is very active, you should work in plastic gloves and a protective apron. Glasses required. Means eats through rubber products in 2-3 minutes.

The compositions are a complex composition of chemically active substances. As a rule, manufacturers include in the solution: complexing agents, corrosion inhibitors, alkalis (or acids), surfactants.

And the third way is fire. By using blowtorch(not with a cutter) heat the surface until the paint burns. The main thing here is not to overheat the metal, otherwise it will deform. After treatment with fire, we clean the remains of the paint layer with an abrasive or a metal brush.

5. I heard that there are so-called “grounds”. How do they differ from paintwork for metal? Are they a full-fledged replacement for metal coating? In what cases is it necessary to use a primer and is it necessary to “lay” a layer of full-fledged paint on top of the primer?

The primer is intended for the primary coating of metal and the formation of a protective layer before application. decorative composition. "Soil" provides protection against corrosion, evens out defects, creates a solid foundation for enamels. The primer blocks contaminants that cannot be cleaned from the surface.

The primer differs from paint coatings by the presence of special complexes in the composition, which prevent rust from developing and protect the metal from moisture penetration. Nevertheless, paints are now being produced that “work” no worse than primers (3 in 1).

Today's construction market offers buyers a wide choice various materials for metal processing. In this regard, homeowners often have a question about which paint for metal is better. To answer it, you need to understand the varieties of such products and their properties.

The main types of paints for metal

Alkyd paints

They are divided into two subspecies:

  • oil formulations- their basis is drying oil, which is usually produced from natural oils. Such mixtures are suitable only for interior work, and for exterior finish they don't fit. The point is that under the influence sun rays such a surface gradually fades and becomes covered with cracks. In addition, rust continues to progress under it;

  • enamel- do not tolerate exposure high temperatures and are combustible. But at the same time, they have a high grip.

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. It is explained by the fact that such a coating is very durable. In addition, it is not subject to cracking, fading, and is a good corrosion protection.

Another plus is that it can withstand high temperatures. Therefore, it can be used to process radiators of the heating system.

The following advantages are environmental friendliness and incombustibility. This mixture does not bad smell and until it dries, it can be washed off hands and tools with plain water. Thus, it is about her that we can say that this is the most best paint for metal.

The choice of paint for metal

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

There are also specialized formulations that can withstand very high temperatures. In particular, these include epoxy bituminous mortars 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 compositions. They are safe for health and do not have a strong odor.

Concerning external works, then enamels are quite suitable for them. They are toxic, but at the same time, they fit well on a metal surface. In order to protect against corrosion, primer-enamels can also be used.

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

Popular brands of paints for metal

Tikkurila

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

Under this brand, compositions are produced for both internal and external work. For the first of them, the paint consumption per 1m2 for metal is 1 liter per 8-10m², for the second - 1l per 10-14m².

The range of Tikkurila also includes heat-resistant mixtures. They are able to withstand temperatures up to 400°C.

Hamerite

A metal coating produced under this brand can be applied directly to rust. Preliminary cleaning and priming of the surface is not required.

The named composition is equally well suited 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 right tone for him.

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

Summing up, it should be noted that Hamerite has only one drawback. This is his high price.

Novbytchim

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

Paint consumption rate per 1m2 for metal this case ranges from 80 to 120 ml/m². Of course, this is subject to the coating being applied in one layer. With more of them, the material consumption will also increase many times.

This composition is used for. It can be applied to both matte and glossy surfaces.

The coating obtained with its help is resistant to sudden changes in temperature and other adverse effects. external environment. In addition, it dries quickly and can be applied at temperatures as low as -10°C.

Advice! Do not use this primer-enamel for heated 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.

Metal coloring

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, exfoliated coatings.

This will require a metal brush, scraper or sandpaper. A warm soapy solution will help you remove soot and other contaminants. After completion of work, the surface is washed with clean water and dried.

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

Padding

Metal treatment with a primer achieves two goals:

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

Keep in mind that different metals require different primers:

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

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

Any metal structures already finished or just being prepared for installation require protection from external influences. This is especially necessary if the product will be on the street. In this case, one of the options for surface treatment is metal paint. Products are capable of simultaneously performing 2 functions - decorative and protective, but this requires choosing the right one.

Name

Price

Briefly about the main

2.5 l - 2700 rubles.

High-temperature paint on average is designed for a maximum of 3 years.

1 l - 250 rubles.

Universal alkyd glossy paint. It is used for work on wood, primed metal and other surfaces, both indoors and outdoors.

0.8 - 550 rubles

Heat-resistant elastic coating can be used on metal and concrete. In reality, it withstands only short-term temperature peaks.

1 l - 430 rubles.

It is used to protect and finish clean, rusty and partially corroded up to 0.1 mm.

0.75 l - 240 rubles

It dries quickly, forming a beautiful relief with a glossy sheen. Does not fade over time. Can be painted without a primer, hides small dents and irregularities, is not afraid of precipitation and temperature peaks.

2.5 - 2100 rubles.

Doesn't spread. Economical consumption. The drawing is deep glossy. Stored for 5 years.

2.05 l - 1500 rubles.

The Greek alkyd resin product is resistant to atmospheric influences. Easy to apply, doesn't run. The layer is flexible and dries quickly.

Material characteristic

Any paint for metal is anti-corrosive for rust, the only difference between them is the degree of effect and the possibility of applying directly to areas with corrosion foci. In general, each option proposed by manufacturers will reliably protect the base from the formation of outgrowths. In addition to this property, the product also has a number of features.

First of all, it should be noted fire-resistant paint, which does an excellent job with protective properties, while at the same time acting as a barrier to temperature exposure. Such material is successfully used in the processing of various structures that are regularly exposed to heat or are close to a heat source. The entire range can be divided into 5 main varieties, depending on the composition:

  1. Acrylic- characterized by a long service life without loss of protective functions. According to most manufacturers, the material is able to protect the metal for 8 years. The composition of the product does not contain toxic components, so the products are suitable for both indoor and outdoor use.
  2. Epoxy- the composition includes epoxy resins, which makes them harmful to human health and allows them to be used exclusively on the street. It is also not recommended to use the material for painting household items. Most suitable place for use are places exposed to elevated temperatures.
  3. Alkyd- used for painting galvanized elements. Differ high level adhesion. But this option is forbidden to be used near heating units or an open source of fire, since it is considered combustible. Paint for galvanized metal for outdoor use is easy to apply and dries relatively quickly.
  4. oily- contains natural ingredients, including drying oil. It is lined with a headset, which is located directly in the building. But the mixture is not able to tolerate temperature changes, therefore it is not intended for use outside the building.
  5. Molotkovaya contains alkyd, acrylic and epoxy components, glass fiber, aluminum powder and metal pigments. In external parameters, it resembles a surface knocked down with a hammer. The coating has a pronounced relief with a bright metallic sheen. Available in glossy and matte interpretation, it can be different shades. Double layer treatment eliminates the need for application finishing mix and primers.

This information will be sufficient to complete right choice. But if it comes to choosing a manufacturer, then experts recommend using the ratings of the best, according to builders, paints for metal and rust.

This product belongs to the category 3 in 1. This means that it performs 3 functions at once - anti-corrosion primer, undercoat and finish coat. The only condition is that the soft layer must first be removed, otherwise it will peel off along with the finish.

Hammerite 3 in 1

Hammerite paint for metal and rust is considered universal because it is produced using 3 in 1 technology. Thanks to this factor, it includes a primer, corrosion inhibitors and a top coat. Such a product does not require additional preparatory work, which reduces time costs. The material is resistant to abrasion, moisture and temperature effects.

Hammerite 3 in 1

The heat-resistant coloring consistency dries quickly enough, therefore, to create a second layer, you need to wait only 4-6 hours from the moment the first one was applied. Alkyd material is widely used in the industrial sector, as well as in domestic conditions. Paint for galvanized metal is also suitable for painting fences, piping systems, furniture. In addition, metal alloys, wood, plastic can be used as the basis. The mixture may be applied directly to corrosion with a brush or sprayer. The Hammerite 2.5 liter container is sold at a price of 2500-2700 rubles.

Epoxy polyester powder paint for metal has high characteristics against chemical attack and darkening at elevated temperatures. It does not tolerate direct sunlight, so it is used indoors.

Most often it is used for cladding household equipment, commercial headsets, shelving, furniture components and other fittings. The material is produced not only in white, there is also silver paint, yellow, blue, green and other shades. The price for 2.5 kg is 1050 rubles.

Products of this category will not turn yellow and will not lose their gloss under the influence of direct sunlight, and are not susceptible to oxidation. The maximum service life is 5 years, after which the surface must be re-covered.

Prestige

This is a fast drying paint for metal, which has a high level of adhesion to the base, as well as short term drying. It takes up to 60 minutes to completely harden, which is considered a big plus. The coating has good corrosion protection and weather resistance. The manufacturer recommends, if necessary, diluting the mixture with xylene, P-5 and P-4.

When applying the product in one layer, its consumption varies within 60-120 gr./sq.m. Packed in containers with a volume of 1000 ml, the price of which varies within 250 rubles.

Certa

Heat-resistant paint for metal up to 900 degrees from domestic manufacturer it is allowed to use for painting elements that are operated not only with increased heat transfer, but also with severe frosts up to -65°С. The material is available in 26 colors, while the temperature stability is not the same for every tone, this should be taken into account when choosing.

Black matte paint for metal is able to withstand all 900 ° C, other shades have a slightly lower indicator. The fire-retardant mixture is packaged in containers of various sizes, including spray cans. 800 gr. costs about 400-550 rubles.

The name "hammer" is derived from the visual effect it creates. After drying, the surface becomes embossed with a three-dimensional pattern that imitates a hammer fight. Perfectly protects metal from corrosion, retains the pattern for 5-6 years even under direct sunlight.

Lacra Hammer Effect

Alkyd dye has high decorative properties, but at the same time it regularly performs protective functions. The material can be applied to structures cleaned of corrosion, as well as directly to rust. The main thing to consider here is that the build-up layer should not exceed 0.1 mm thick. In addition, the product is suitable for facing wood bases.

Lacra Hammer Effect

Molotkovy products at the time of drying forms a uniform glossy coating with a slight relief and hand-chased pattern. If it is planned to apply the mixture to products made of non-ferrous alloys, their surface must first be primed. The work uses rollers, brushes and spray guns. The minimum volume of 1 liter costs 400-430 rubles.

The odorless, quick-drying material is made on the basis of alkyd components; as a result of application, it forms a uniform layer with a glossy surface. It is spent quite economically, one liter is enough to process 15 sq.m.

The product is packaged in tin containers of 750 ml. Odorless dye is applied both to metal surfaces and galvanized, wood-plastic, concrete. Can be used inside and outside the building. Color palette contains 24 shades. The price for 750 ml varies within 240 rubles.

The symbol on the package "3 in 1" means that the composition includes components that neutralize rust, primer base and, in fact, the coloring enamel itself. It is convenient and quick to use, there is no need to pre-prepare the base, but only if the rust is not soft and its layer does not exceed 0.1 mm. Here you have to clean it with a metal brush and then cover it without soil.

Alpina Direct Auf Rost

Alpina is used for processing metal structures located both indoors and outdoors. The product simultaneously creates a decorative and protective lining that will not only look attractive, but also protect the base from moisture or corrosion.

Alpina Direct Auf Rost

For work, rollers and brushes are used. Material presented at 9 different shades. The price for 2.5 liters is 1950-2100 rubles.

Alkyd anti-corrosion mixture creates glossy surface with uniform pigment distribution even if the product is applied in one layer. The material is weather and temperature resistant.

The main parameters of paint for metal for outdoor use are as follows:

  • gloss - glossy;
  • consumption - 9-11 sq. m / l when applied in one layer;
  • dry residue - 50-53%.

It costs a capacity of 2.5 liters up to 1500 rubles.

VIDEO: How to properly paint galvanized metal