How to determine the paint consumption per square meter for metal? What is the consumption of paint for metal.

When renovating, it is advisable to correctly calculate the paint consumption per m2 and the entire room. If you buy a little, then you have to spend time on a trip to the store and the tone may differ. The extra is also not needed, the money was spent, and the composition will disappear before you need to paint something again. Leading paint manufacturers, such as Tikkurila, Dulux, Tex, offer to determine the right amount of material for finishing when purchasing. For this, there are electronic calculators.

On each can with the composition of NTs enamel, water-dispersion, mineral and other types, the coverage rates are indicated by one kg or a liter per m2 of wall or floor. These are the numbers for a smooth firm horizontal plane with a good 2 coats primer. How much material is needed in a particular case is determined taking into account a number of factors.

For convenience, we count squares in meters

I am often asked how to calculate paint consumption in order to determine how much will be needed for repairs. You should start by determining the surface area in m2 for painting. You need to measure the perimeter of the room and the height of the walls from floor to ceiling. For floors and single-tiered ceilings, it is sufficient to multiply the length by the width. All surface area calculations should be done in meters.

To determine the area of \u200b\u200bthe walls, consider:

• niches;
• semi-columns;
• protrusions;
• bay windows.

On the back of the can is the paint consumption per square meter, or how much wall and ceiling surfaces can be covered with 1 liter of material. On the front side of the container, the volume is written in kg. Coloring pigments and most fillers are heavier than water. It is necessary to determine how many kg are in 1 liter of the composition. For NTs-132, PF-115, oil enamels, silicone and silicate - this coefficient is about 1.5. The weight of water-dispersion and water-based paint is less, in 1 liter about 1, 4 kg.

Hiding power depends on the basis of the composition and additives

We paint ourselves

Having calculated the area of \u200b\u200bwalls and other surfaces for painting in m2, you can determine the paint consumption for the entire repair. This should be done specifically for the selected material. For example, the products of Dulux and Tikkurila are more expensive, but more economical in work, they are applied with a thinner layer whiter. Water-based formulations cover a large wall surface area of \u200b\u200b1 kg of substance. NTs-132 and PF-115 create a strong film, but more of them are required per 1m2.

The hiding power of the paint depends on the substrate. The table shows for comparison the average figures for the formulations Dulux and Tikkuril.

Separate tables have been created for NTs-132 and PF-115 paints, since their weight in 1 liter and consumption depend on color pigments.

When calculating the amount of material, you need to take into account how many layers you need to apply for a high-quality coating of a given surface.

Dependence on texture and texture

Paint consumption for finishing 1 square meter of surface

Consumption rates are indicated on the packaging for an ideal surface. For walls, this is a smooth sanded plaster with a double primer coat. You can determine how much paint you really need, taking into account:

• surface density;
• textures;
• roughness;
• curvature;
• preliminary preparation;
• tool.

The table shows the consumption rates of universal paint on surfaces with different densities.

Coating with a spray gun is considered economical due to obtaining a thin layer. In this case, NTs-132 is mixed for a more liquid state in half with a diluent. When working with a brush, paint is consumed by 3 - 5% more.

Color matters

Mineral-based mixtures are tinted in the store using a computer, they have hundreds of shades. Tonality does not affect coverage. How many meters of walls can be painted with NC-132 and PF-115 depends on the color. Pigments and additives have different specific gravity. The mixes are sold ready to use and come in a limited number of shades.

The table shows all the colors and consumption of PF-115.

The composition of NTs-132 has a palette of about 30 colors, many gray tones, bright shades are limited to blue and green.

The table shows several similar colors for comparison of the consumption rate.

Comparison of materials from Dulux, Tikkurila and other popular manufacturers

Each manufacturer improves the technical characteristics of the material with its specific additives. As a result, the covering power of similar formulations differs from company to company. The table shows a white matt ceiling paint.

When buying paint, add to the estimated amount the cost of losses of 5 - 7%, depending on experience and on the location of the surface. Smallest for the floor, as there is nowhere to drip or drain. For walls, consider the tool.

PAINT "Serebryanka" BT-177 (GOST 5631-79) is used for painting structures and products operated outside in atmospheric conditions.

Assigning material

The paint BT 177 (silver) is intended for protection and decoration of metal, wood, concrete structures and products that are used in an open atmosphere.

Benefits

BT 177 is a paint that has the following advantages:

- it is able to give the surface a decorative look;
- to provide surface protection from negative atmospheric influences;
- has an anti-corrosion effect;
- drying is fast enough;
- the coating can serve for 2.5 years if properly painted.

Main characteristics and properties of the material

BT 177 - paint (enamel), which includes two main components: varnish BT-577 and aluminum powder. They are mixed before use. This paint is a material that is sufficiently resistant to weathering. It is applied both as a primed surface and without pretreatment.

The paint has excellent adhesion to metal, when it dries, it is possible to obtain a shiny, mirror-like, elastic, temperature-resistant coating that can withstand temperatures of 200 C, among other things, it perfectly protects against rust, high air humidity and the action of solutions of complex substances contained in water on the painted surface. BT 177 is a paint that is applied with a brush, roller or sprayed onto a product. Drying of paint occurs both under natural conditions and using hot drying.

Coating appearance

After the paint dries, the surface becomes silvery in color with an even structure that does not have any wrinkles or pockmarks.

Solvent

These paints and varnishes, if necessary, are diluted with white spirit, solvent, turpentine, or their mixture in the desired ratio (1: 1).

Applying paint to the product

The product should be prepared before applying paint. If it was previously painted, then it should be cleaned and dried. Only after completing these steps can the surface be painted with a roller, brush or spray. These paints and varnishes are applied in one or two layers, the air temperature during paint application can vary from +5 to + 35C and a maximum humidity of 80%.

When using paint at a low temperature, it should be noted that the temperature of the material must be at least + 15C.

How much paint is consumed per layer

On a painted surface measuring 1 sq. m. will require from 110 to 130 grams. Consumption paints per 1 sq. m of surface, primer enamel emacout? The actual consumption, as a rule, depends on how well the surface to be painted is prepared, what method of painting is used and what the professionalism of the staff is.

One layer of paint is 20-25 microns thick and depends on the method of painting and the qualifications of the personnel.

How to dry a painted product?

The drying time of the paint at an air temperature of 20-22C is 15-16 hours; at a temperature of 100-110 C, the paint is dried for 30 minutes, the coating should be pre-conditioned for 30 minutes at room temperature. After hot drying, before use, the painted coating should be kept for at least 3 hours in air, the temperature of which is 18-22 ° C.

Service life of coatings

If all the requirements for surface preparation, paint application (primer layer and 2 paint coats), as well as drying of the painted product are met, the operation of the coating in a temperate climate is possible up to 2.5 years.

Main technical characteristics

BT 177 paint has the following characteristics:

• Drying at a temperature of 20-22 ° C to the third degree is no more than 16 hours.
• At an air temperature from 100 to 110 ° C - no more than 30 minutes.
• Flexural elasticity of the film is no more than 1 mm.
• Undried film has a spreading rate of no more than 30 g / m2.

With BT 177 paint, the characteristics of which are indicated above, metal products are painted as follows:

• 1 layer - primer (eg GF) on a corroded surface "Unicor", or using one layer of a corrosion converter;
• 2nd layer - one (or two) layers of this type of paint.

If no primer is available, you can simply apply two coats of paint.

How should it be stored properly?

The components of the paint (varnish and duralumin powder) will be stored in a hermetically sealed container, protected from moisture, exposure to temperature influences (direct sunlight and heat) at an air temperature from minus 40C to plus 40 C.

In what container is it produced?

The varnish that the paint is made of is sold in cans or industrial containers; aluminum powder - in drums. Packages are large, which hold 15, 25, 57 kg, or small, weighing from 0.8 to 2.8 kg.

Manufacturer's shelf life

The guaranteed shelf life of the varnish from the day it was made is six months, and aluminum powder is stored for one year from the date of manufacture.

Additional Information:

Serebryanka - paint prepared by mixing paint or varnish with aluminum pigment powder. Often the very aluminum powder is popularly called silver. For painting metal surfaces, silverfish is diluted with BT-577 or BT-5100 varnish; for painting structures used in atmospheric conditions, BT-177 paint is used mixed with aluminum powder. Also, to obtain silver, aluminum powder can be mixed with drying oil of synthetic origin. It is forbidden to mix silver powder with oil and alkyd based paints. Also, prepared silver can not be applied to surfaces previously painted with these paints.

Therefore, surface preparation before applying silver should be reduced to complete cleaning of the metal.

Metal surfaces are painted to give them an aesthetic appearance and to protect them from the destructive effects of corrosion. Mostly iron, galvanized and non-ferrous metals are painted. Exterior galvanized metal paints? In any of these cases, it is required to determine the consumption of paint on metal per m2 in order to calculate the total volume required to perform the work. There are several ways to get the information you are looking for.

The easiest one is to look at the packaging of the mixture - here manufacturers often indicate how much composition is required to paint one square. The average consumption rate of paint for metal per 1 m2 is 110-150 grams. But there are many factors that can change it up or down.

The consumption rate of one or another paint per 1 square meter is indicated by the manufacturer on the packaging, but most often it is calculated based on the ideal application conditions. In this article, we will consider the calculation of paint for metal, the most popular dyes will be taken into account.

On the back of the can is the paint consumption per square meter or how much wall and ceiling surfaces can be covered with 1 liter of material. On the front side of the container, the volume is written in kg. Coloring pigments and most fillers are heavier than water. It is necessary to determine how many kg are in 1 liter of the composition. Anti-corrosion paint for metal on zinc?

For NTs-132, PF-115, oil enamels, silicone and silicate - this coefficient is about 1.5. The weight of water-dispersion and water-based paint is less, in 1 liter about 1, 4 kg.

3) Choosing the right brush helps save consumables. (Fig. 2) Natural bristles absorb well and evenly distribute the paint over the surface (except for water-dispersible compositions). A quality tool should have a wide handle, good thickness and no nylon wrapping.

1. Base color: to obtain light shades without gaps, it will be necessary to paint in several layers. For example, the average consumption rate for 1m 2 of white is about 110 grams, and for black - 60 grams.
2. Application method: the spray gun is the most economical and evenly dispensing, but not suitable for every type of substance. When using a brush and roller, the consumption volume will be several times greater, and drips may also form.

The consumption rate of one or another paint per 1 square meter is indicated by the manufacturer on the packaging, but most often it is calculated based on the ideal application conditions. In this article, we will consider the calculation of paint for metal, the most popular dyes will be taken into account.

Consumption of PF-115 paint per 1m2 for metal.

The abbreviation "PF" in the name of the enamel means PENTAFTAL. It is easy to decipher it - the composition of the paint and varnish material includes alkyd resins and semi-dried oils, which allow the paint to dry quickly.

Enamel PF 115 occupies a leading position in the market of paints and varnishes. If you can describe it in one word, then the most appropriate would be “universality”. It is used for painting any kind of surface. The paint can be mixed with other compounds and also with a primer.

Consumption rates of PF-115 per 1m2.

As practice shows, the consumption rate of the material varies from 100 to 180 g. Professionals also say that on average one kilogram cans are enough to paint 15 m2 of the prepared surface. Also, the consumption of PF 115 directly depends on the selected color pigment.

Below is a table of the approximate consumption of PF-115 enamel (depending on the selected color):

You can reduce the amount of the coloring composition if you choose a silicone-based roller to apply it.

Consumption of oil paint per 1m2 for metal.

Calculation of oil dye for metal, calculated in grams, is the most convenient indicator, since most often we know information about the surface area in advance. The area must be calculated, taking into account all the irregularities, the level of the degree of absorption, then how many layers need to be applied.

Among the most significant factors determining material consumption, it is necessary to highlight the color. The number of layers and the quality of the coating will depend on this. Since the density of the color depends on the pigmentation, the cost will vary depending on the tone.

Oil paint consumption rates.

The standard calculation of the material when painting in one layer is 130-140 g per 1 m2. Light-colored paints have a lower density, which increases their consumption, that is, the surface will have to be painted in two or three layers.

The table shows the calculation of oil dye depending on the color:

Powder paint consumption per 1m2 for metal.

With this type of paint, you can get a finish that cannot be achieved using conventional liquid paints and varnishes. Films that are created with such paints are able to withstand any stress.

Find out what the consumption of powder dye per 1m2 can be calculated, thus, if you take into account the thickness of the applied layer and the weight of the dye. The lighter it is, the less it will be needed.

The thickness of the applied layer must be at least 100 microns. Practice has proven that to reduce the consumption rate of this type of paint, it is necessary to use a spray gun. The same must be taken into account when figuring out the consumption of high pressure paint per 1m2. When using this tool, approximately 120-140 grams of dye will be consumed per m2.

Factors that determine the consumption of paint mixture for metal.

Consider all the main points that may affect the amount of the coloring composition consumed to perform the work.

They are as follows:

• Metal type. It does not significantly affect consumption, but if we are talking about a large scale, then the difference will be quite noticeable. The procedure for painting a metal surface damaged by corrosion will be especially costly. To save money, you need to cover the base with a primer.
• Hiding power of the mixture. It is prescribed by the manufacturer on the packaging, calculated in kg per m2. The indicator affects the ability of the composition to overlap the previous layer. The higher the number, the less paint will be required.
• Base color. To get a light shade, you will have to spend about 110 grams of paint for each square. If the surface is painted in a dark color, this figure will drop to 60 grams.

These are the main factors that determine paint consumption for metal. But there are additional points that can have an impact at the moment. For example, a method for painting a surface. The most economical is the spray gun. It allows you to reduce material costs by 10% or more.

There are certain norms for the consumption of paint per square meter of the painted surface. When calculating the average spending rate, it is important to take into account a number of important factors:

• The viscosity of the coloring matter;
• The quality of the painted surface;
• The place where the painting is carried out - indoors or outdoors, weather conditions.

The average consumption of PF-115 enamel per 1m2 for applying one layer of coating to the surface is 110-130 grams per square meter.
The most significant reason for the increase in enamel consumption when painting metal surfaces is environmental conditions. In particular, painting a square meter of metal requires more enamel indoors than outdoors in warm and dry weather. At the same time, deterioration of weather conditions leads to a significant increase in paint consumption outdoors: painting in conditions of strong wind, fog and rain requires much more paint.

One of the most important components of any paint is drying oil, which acts as a binder. After applying paint to the surface, drying oil polymerization begins.

The most popular paint today is pentaphthalic enamel. After its application, a film begins to form on the surface, which has a homogeneous structure and does not delaminate over time.

Calculation of PF-115 consumption per 1 m2 of surface

Average enamel consumption rates for one coating layer are 110-130 grams per square meter of surface. Depending on the color chosen, one kilogram of enamel allows you to use a certain area:

• White enamel - from 7 to 10 m2;
• Black - from 17 to 20 m2;
• Light blue and blue - from 11 to 14 m2;
• Brown - from 13 to 16 m2;
• Red or yellow - from 5 to 10 m2.

The enamel can be diluted using white spirit, solvent or a mixture of both in equal proportions. To apply paint to the surface, use a roller or brush, applying several layers of coating, each of which is allowed to dry for 24 hours.

Buying any paint and varnish material, you can quickly calculate the required amount, since the manufacturer indicates all the necessary information on the packaging. But, it should be noted that the volume will be individual for each type of surface. Only professionals can make an accurate calculation and calculate paint consumption rates for metal. For more information, see the article below.

We take into account factors

To carry out independent calculations on the amount of paint used for metal, it is necessary to pay attention to such important factors:

• the quality of the dye;
• surface condition;
• staining technology;
• air temperature and humidity;
• drafts or air currents;
• other nuances.

You should also pay attention to another number of indicators on which paint consumption will depend. This is primarily about the coverage of the composition, which is most often expressed in g / m 2. This indicator will indicate how much paint and varnish material can cover the previous layer. Most modern products are able to give the desired result even with the first layer of staining, the maximum - the second.

The instrument itself, which is used for staining, is also important in this matter. A correctly selected brush can provide economy and uniform application of paint on metal. A natural bristle brush is ideal for most types of paint. But for paints and varnishes on a water-dispersed basis, it will not work. What are the criteria that affect the quality of the staining tool?

1. Wide handle.
2. Good thickness.
3. No nylon-based winding.

Hiding power of the composition is inversely proportional to the consumption rate.

Paint consumption parameters

The object that needs to be painted can be made of different metals, for example, non-ferrous, black or galvanized iron. This parameter is especially important when using oil and alkyd substances. The condition of the surface is also important: a smooth and even surface without obvious signs of deformation will automatically increase the quality of painting.

Consider a few more important points:

1. Base color: to obtain light shades without gaps, it will be necessary to paint in several layers. For example, the average consumption rate for 1m 2 of white is about 110 grams, and for black - 60 grams.
2. Application method: the spray gun is the most economical and evenly dispensing, but not suitable for every type of substance. When using a brush and roller, the consumption volume will be several times greater, and drips may also form.

When using spray guns, a measuring jar is purchased, thanks to which it will be much easier to determine the volume of a substance per 1 m 2.

To reduce consumption, the surface is pre-primed or putty. This will avoid sagging and uneven coating.

Losses

Do not forget that during work, you should also take into account the possible loss of paint and varnish material, which will also affect the amount of paint required. For convenience, you can use the following average indicators, depending on the place where the staining is carried out:

• up to 5% - outdoors in the absence of wind;
• 5% - indoors;
• 20% - in windy weather.

Assortment of paints for metal

When choosing a paint and varnish material for painting a metal surface, you should pay attention only to two large groups:

1. Alkyd paints. In turn, there is a division into two subgroups - these are oil formulations (based on drying oil) and enamels.
2. Acrylic coatings.

The latter are leaders, as they have a greater number of advantages:

• the applied layer is strong and durable;
• do not fade or deform for a long time;
• there is protection against corrosion;
• able to withstand high temperatures;
• environmental friendliness and incombustibility.

For internal staining, choose acrylic compounds, as they are safer for health and do not have a pungent odor. If you need to carry out outdoor work, you can opt for enamels.

Alkyd paints can withstand temperatures of no more than 80 ° C. While for acrylic types this figure reaches 120 ° C.

Popular paint brands

The assortment of paints for metal, presented in specialized stores, is wide, but three brands are in the lead.

1. Tikkurila. It has good wear resistance and perfectly tolerates all types of fats and oils. Designed for both indoor and outdoor use. In the first case, 1 liter is enough for painting 8–10 m 2, and in the second - 10–14 m 2.
2. Hameright. The difference is the ability to paint rusty surfaces without preliminary priming and cleaning. 1 liter of paint in 1 layer will cover 8-9 m 2.
3. Novbytkhim. Modern primer enamel. In addition to decorative functions, the coating will create a protective layer. For 1 m 2 in 1 layer, you will need from 80 to 120 ml.

Pay attention to the indicators indicated by the manufacturer, but do not forget about the factors that will affect the consumption.

Staining should be carried out in accordance with the technology, otherwise you can get a poor-quality coating with drips and gaps.