How to calculate the consumption of water-based paint per 1 m2 of wall

Consumption rate of façade paint per 1m2

The starting point for determining purchase sizes is the material consumption per square meter of area. There is no single calculation formula, since the volume of solution required for uniform coverage depends on several factors:

• Number of layers;
• Structures of the painted surface;
• Difficulty of work;
• Tool used;
• Type and color of tinting composition;
• Preliminary surface preparation.

With the number of layers, everything is relatively clear - the higher the number required for a dense, uniform coating, the larger volume of mixture will be required. It should be taken into account that with each subsequent application the consumption will decrease, and if for the first application the consumption of façade paint per 1 m2 will be 300 g, then in the second the same amount will be enough for an area 2-2.5 times larger.

The structure of the building material on which the solution is to be applied also matters. Textured, relief coatings have a larger surface per unit area and require an increase in calculated figures. Therefore, the consumption of facade paint per 1 m2 on plaster with a relief surface exceeds the same figure for smooth coatings. In particular, the consumption of facade paint for bark beetles will be 15-20% higher. If porous bases are subject to finishing, then part of the composition will penetrate into their structure, increasing costs by 8-10%.

Photo from the site prof-fasad.od.ua

The complexity of the work means a large number of protruding elements, joints and corners, as well as a combination of different colors and shades. Coating that requires clear lines or in hard-to-reach places is usually done with a brush and requires the use of an additional amount of coloring solution.

The tool used by the painter determines not only the convenience and speed of manipulation, but also the cost-effectiveness of using building materials:

• From a cost point of view, the optimal method of application is a spray gun (painting gun), which allows the composition to be applied in the thinnest possible layer.
• Average consumption can be achieved by using paint rollers. A convenient option for the facade would be a roller with a telescopic handle, which allows you to paint at a considerable distance from the painter.
• Brush coating is the most labor-intensive and time-consuming process and uses the most material. But you still won’t be able to avoid using brushes in corners and joints.

a brief description of

Water emulsion is used by everyone who has started repair work. Here are a few reasons why the choice falls on her:

1. Easy to apply due to its consistency. Due to the fact that it is similar to liquid sour cream, one time of staining will already give a good result.
2. If it is very thick, dilute it and application will become easier and the result will be better.
3. Affordability. There are also expensive materials, of course. But, most often, the choice falls on the middle price segment.
4. Colorants are added to the water emulsion; the color will be evenly distributed over the entire surface.

Technical characteristics of primer-enamel for rust 3 in 1

Any owner sooner or later faces wear and corrosion of his favorite external or internal items. And I really want to give things a second life! What materials can help with this?

Purpose

Primer-enamel 3 in 1 is a universal composition for restoring the appearance of metal structures. This is a metal paint that does not require prior priming and performs the following functions:

• eliminating pockets of rust on the metal surface and preventing its further spread,
• coating the product with a primer that promotes better adhesion to paint,
• painting the surface of the structure with decorative enamel.

Thanks to the combination of functions in primer-enamel, there is no need to apply several layers of different materials to the product and wait for them to dry completely before applying each subsequent one. This significantly saves time and money, and also allows you to reduce the number of working tools.

Most often, primer-enamel is used to cover outdoor structures: gratings, fences, gates, garages, doors and street furniture. This is explained by the fact that primer-enamels are atmospherically resistant to humidity, cold and sun. But it is also possible to use the composition for decorative purposes - for coating various interior items.

It should be noted that primer-enamel is widely used in car repairs, especially its internal parts. Hard-to-reach places where there is constant contact with oil, steam or high temperature can be easily covered with one or several layers of primer-enamel. After this, the car components become resistant to aggressive influences.

In industry, these compounds have also found their place due to their chemical resistance to oils, aggressive environments, water and steam. They are used to cover elements of industrial and building structures, hangars and warehouses.

Primer enamel can be used not only for cast iron, steel and aluminum products. It is often used to coat wooden, concrete, mineral and brick surfaces both indoors and outdoors.

Ease of use, good appearance of the products and availability in stores make this coating an indispensable assistant in the household.

The versatility of primer-enamel is ensured by the presence of several components in its base.

• Alkyd-urethane varnish. This is a quick-drying composition of alkyd resins combined with urethane components. It is a connecting component.
• Anti-corrosion materials. Two components should be distinguished here: anti-corrosion pigments, which prevent the formation of new foci of rust, and rust modifiers (or converters), which neutralize existing corrosion. Such additives form a phosphate film on corroding areas.

Technical characteristics of primer-enamel for rust 3 in 1

Main purpose and scope of application of primer-enamel. What are its technical characteristics and consumption per m2? What are the main advantages of primer enamel? What features need to be considered before using the material? What is good about enamel primer for rust 3 in 1? What feedback do customers leave about the use of this composition?

Varieties

The modern paint market is represented by a huge assortment; there is also a place for facade paints. The most common coloring mixtures are acrylic, silicate, silicone, latex and textured.

Acrylic mixture is the most popular and inexpensive option for painting exterior walls. Interacts with almost all materials from which a building can be constructed. After drying, it creates a durable protective film that serves as protection from environmental influences. Does not fade, is resistant to abrasion and does not form cracks. Such paints are not suitable for covering walls made of lime plaster and sandstone.

For such surfaces, silicate paint is more suitable. It is produced on the basis of silicate glue, to which mineral pigments and fillers are added. The service life of this type of glue is 25 years. It is waterproof and provides reliable adhesion to the material it is applied to. Resistant to any weather conditions. This mixture is suitable for use on concrete and brick. Its weak side is that it is subject to mechanical stress and is not elastic enough, so it can crack after drying.

Silicone paints are considered one of the best for painting plastered facades. In terms of their characteristics in terms of elasticity, resistance to mechanical damage and price, they lag behind acrylic compositions, and that is why they are not so widely used. After applying this type of paint, the plastered surface does not absorb moisture, but has a high level of vapor permeability and is resistant to temperature changes. After drying, the coating is able to repel dust and is not exposed to sunlight.

Latex or water-dispersion mixtures are made on the basis of polymer components. The combination of latex and acrylic made it possible to increase the operational capabilities of the compositions and increase the scope of their application. They can be used for exterior and interior decoration, but before application the surface should be thoroughly primed to avoid further appearance of fungi and mold. This composition can be used to paint any type of surface. It has no pungent odor, is environmentally friendly, is breathable and fireproof. Water-based paints can be diluted with water. They dry quickly and are resistant to moisture. The only drawback is that it is not possible to tint them in bright and rich colors.

Textured or structural painting compositions are suitable for creating decorative coatings not only on facades, but also on other elements of buildings. They do not require careful surface preparation and can be applied to cracks and chips at corners. The paints contain special plasticizers that help create a unique protruding pattern. The composition has high frost resistance, is resistant to ultraviolet rays, is insensitive to dampness, and has dust- and dirt-repellent properties. Does not crack due to high ductility. It can be applied to any surface - both brick and wood.

Types of emulsion paints

Water-based paints have several undeniable advantages: there is no unpleasant odor, during application and operation no harmful and toxic components are released into the environment, the use of water-based paints does not require the use of special solvents and thinners.

The ability to dry quickly makes it easy to use and allows you to complete painting work in a short time. This is due to the fact that the solvent for emulsion paints is water. To obtain certain characteristics, various additives are also used to make the paint waterproof or give it other useful properties.

Depending on the composition, water-based paints are divided into several types. The composition directly affects the consumption per 1 sq. m.

Consumption by type of emulsion can be viewed in the following table:

Acrylic paint

The most popular type of emulsion paint at the moment. The main component is acrylic resin, to which other components are added to give it the desired quality characteristics.

After application and complete drying, the coating becomes highly resistant to mechanical damage. This coating is waterproof, as a result of which this paint can be used not only for interior work, but also for painting the facades of buildings. This emulsion has a consumption of up to 2.5 kg per 10 m².

Silicone emulsion

The silicone contained in this paint, after drying, forms a surface with high vapor permeability. This allows this paint to be applied to various types of surfaces where there is a high risk of mold or mildew infection.

This emulsion is perfect for interior work and will provide sanitary protection. Consumption for the first layer is 3 kg of emulsion per 10 m². The second layer will require half the mixture, that is, 1.5 kg for every 10 square meters, which is very profitable.

Silicate emulsion

The liquid glass included in the composition has a significant impact on the quality and characteristics of the finished coating. The result is a surface that is resistant to damage and external influences. This coating is very durable and can last for several decades. However, it is not moisture resistant, so it cannot be used in rooms with high humidity, which significantly narrows the range of its use.

Latex emulsion

The coating obtained after treating the surface with this emulsion is capable of permeable air. This type of coating is popularly called “breathable”. At the same time, it can be easily cleaned with water.

Latex water-based paint is included in the class of non-flammable materials, which increases the safety of its operation. Latex emulsion has the highest consumption among other water-based compositions. For the first layer you will need 6 kg per 10 m²; when applied again to the same area, 4 kilograms of the mixture will be needed.

Polyvinyl acetate emulsion

The composition includes PVA glue, which provides a relatively low price, but makes the paint unsuitable for use in conditions of high humidity. For the first layer you will need 5.5 kg of this type of paint per 10 m², and for the second layer - 3.5 kg.

Rules for calculating the amount of paint

The first step is to calculate the perimeter of the room; to do this, multiply it by the height of the ceilings. Next, subtract the area of ​​windows, doors, etc. This gives you the number of square meters that need to be painted.

To find out how many liters are needed, you need to multiply the volume of the composition used (the number indicated on the back of the jar instructions) by the area of ​​the walls. Do not forget that this amount is under ideal (or close to ideal) conditions.

Surfaces

When painting the walls in an apartment, this issue may not be so relevant, however, in apartments there are decorative elements made of various materials. In addition, this example shows how much the consumption depends on the roughness of the walls.

Paint consumption per 1 sq.m. surfaces:

• 70-150g wood;
• 100-150g metal;
• 150-250g concrete, plaster.

These data are provided for comparison of materials. Since it all depends on the depth of the unevenness, the base for painting, and the type of paint.

An extra layer of acrylic primer can increase the adhesion of the wall and even out minor defects and irregularities. The consumption of the coloring composition in this case is reduced by 13-18%.

When to paint multiple layers

Painting in two or more layers will be required in the following cases:

• when working on a wooden surface being processed for the first time;
• if you want to achieve a deep saturation of a matte shade;
• with a liquid consistency of the composition;
• when using bright colors;
• when applying one layer vertically, the other horizontally.

Method of application and consumption

A spray gun is considered an economical method, but when using it with a spray range, it is worth calculating the distance from windows and surfaces that should not be painted.

The best option is a roller, it is easy to use, and the paint consumption is lower than when using a brush.

The brush allows you to embody design delights, but has long become an outdated method.

The consumption of the composition largely depends on its texture; it is logical that a thick one will take more.

Dependence of paint consumption on the manufacturer

Any manufacturer sets itself the goal of improving all the characteristics of finishing materials, enriching their composition with special additives. Therefore, the hiding power parameters of different companies differ depending on the type of material.

As an example, here are some standards for applying a paint layer from various companies:

And the last nuance: to save money, it is not at all necessary to buy cheap material. It is better to compare the emulsion consumption rates specified by the manufacturers - in some cases it is more profitable to use expensive paint that has a lower consumption rate.

How to calculate the area of ​​walls to paint (2 videos)

Paint with different consumption rates (30 photos)

Classification and properties of facade paints

Before answering the question of how to choose façade paint for exterior work, you need to consider the classification of color mixtures.

The first level of gradation is the type of solvent used:

• Water;
• Organic liquids (solvent, white spirit, xylene).

Water-soluble facade paints are more popular among developers. Their range is much richer than that of tinting mixtures dissolved in organic liquids. The main motivations for choosing are the lower price and minimal toxicity of water-based paints.

The second, no less important classification factor is the type of binder that forms the protective film. The service life of the decorative coating depends on its mechanical strength, adhesion (adhesion force to the base), elasticity, resistance to frost and sun.

There are several types of binders used for facade paints:

• Cement.
• Lime.
• Liquid glass (silicate).
• Acrylic.
• Latex (rubber).
• Silicone.
• Siloxane.

All types of facade paints have common criteria for assessing performance and technical properties:

Water absorption (absorbency capacity)

Facade paint should not absorb much moisture. Otherwise, the walls will get wet, creating conditions for the development of mold and mildew. In addition, on a damp wall, the process of salts leaving the solution (efflorescence) is activated and the plaster does not adhere well.

The degree of absorption capacity of facade paint is indicated by the water absorption coefficient, denoted by the Latin letter W. Manufacturers indicate its value in digital form (kg/h/m2 hour 0.5). For high-quality coloring compounds, this parameter should not exceed 0.05-0.1 kg/kg/h/m2 hour 0.5.

Vapor permeability

This indicator is of great importance for the comfort of living in the house. The paint should not block the passage of water vapor from the premises to the street.

To assess vapor permeability, three equivalent values ​​are used:

• The mass of water vapor (grams) passing through 1 m2 of painted wall during the day.
• Vapor permeability coefficient, denoted by the symbol Sd.
• Diffusion resistance coefficient (µ).

High-quality facade paints transmit from 110 to 140 grams of water vapor through 1 m2 per day.

The second vapor permeability parameter Sd is calculated using complex formulas. For us, only its numerical expression, indicated in the technical description of the paint, matters (optimum 0.3-0.05).

If we focus on the third criterion, then a coloring composition whose coefficient µ is in the range from 1400 to 1500 is considered good.

If the façade paint does not allow steam to pass through well, the plaster becomes damp and falls off.

Resistance to solar ultraviolet

It determines how quickly and intensely the coloring composition fades under the influence of sunlight. This parameter does not have a numerical expression. Laboratory tests can be considered the only objective criterion. According to their data, the most resistant to the sun are silicate (polysilicon), acrylic and acrylic silicone facade paints.

Manufacturers have not come up with a digital equivalent for frost resistance. This indicator can be indirectly judged by the declared service life of the painted coating.

Consumption

When deciding what paint to paint the facade of your house with, you should pay attention to the consumption. This is the main economic parameter

It depends not only on the quality of the paint, but also on the texture of the wall surface and the absorption capacity of its material. In this regard, the consumption of façade paint varies in a wide range from 0.18 to 0.7 l/m2. Manufacturers indicate the average consumption value for a smooth, primed surface (application in 1 layer).

The amount of paint consumed per 1 m2 of facade should not be confused with another indicator - hiding power. It shows the amount of decorating composition required for continuous and uniform painting of 1 m2. This effect is achieved only when applying paint in 2 layers.

Drying time

When painting in multiple layers, drying time (in hours) is important. Its manufacturers designate it with two numbers

The first indicates the time after which the next layer can be applied (2-5 hours). The second digit determines the time required to achieve operational readiness (at least 24 hours at air temperature + 20 - + 23C).

Abrasion resistance is only important for those areas of the painted surface that people walk on. This parameter is measured in friction cycles that a layer of paint can withstand until it is completely abraded.

An example of calculating the area of ​​the walls of a room

As an example, we consider a bathroom measuring 2x3x2.5 m, having 1 window measuring 0.9x1.2 m and a doorway measuring 0.9x1.7 m. The calculation is made using the following technology:

1. First, the total area of ​​the room is calculated: Stotal = AxBxH, m², where A is the length of wall 1, B is the length of wall 2, H is the height of the wall, m. Stot = (A1+A2)xH + (B1+B2)xH = (2 +2)x2.5+(3+3)x2.5 = 25 m².
2. Then the areas of the window and door are calculated: Sok = Aok x Vok = 0.9x1.2 = 1.08 m²; Sdv = Adv x Vdv = 0.9x1.7 = 1.53 m².
3. The area of ​​the door and window is subtracted from the total area: S = Stotal – Sok – Sdv = 25 – 1.08 – 1.53 = 22.39 m² – this will be the area of ​​the wall for painting.

To determine the total material consumption, the obtained value must be multiplied by the specified amount of paint 1 kg/m² and add 5-7% of the reserve.

For example, take acrylic-based paint:

1. The consumption for 1 layer will be: 0.25x22.39+5% = 5.88 kg.
2. The consumption for the 2nd layer will be: 0.15x22.39+5% = 3.53 kg.
3. The total consumption will be: 5.88 + 3.53 = 9.41 kg.

Areas of application

The choice of acrylic paint should take into account the scope of its application. Ease of use has made the composition in demand not only among professional finishing workers, but also among amateurs who independently care for the external walls of buildings or residential buildings. The areas of use are varied and are not limited directly to the construction industry. The main direction is finishing work (final phase), but also:

• design in architecture (embodiment of ideas and projects of artistic orientation);
• treatment of ceilings and walls;
• painting of metal structures;
• processing of wooden elements (from the outside or inside);
• carrying out finishing and decorative works related to the facade of buildings.

There are variants of compositions on sale that can be used on different types of surfaces: painting on plaster (external and indoor treatment), on wood for facades, concrete processing or brick painting.

Painting compositions designed for exterior rust repair are available for purchase. The paint is produced on the basis of an organic solvent or ordinary water. The second option is preferable to choose when finishing will be carried out indoors, since it is less resistant to negative temperatures and changes in humidity.

Painting or restoration work can be scheduled at a time when temperatures pass through zero with a negative value, then the optimal solution would be to choose an organic-based composition. This type of coating fits well on the existing surface and dries quickly. It is recommended to use acrylic paint on water when the main work will be done indoors. It is also used for painting foundations with a porous structure made of concrete, artificial stone or brick. A climate with high humidity will not have a negative impact on the composition and its characteristics.

Review of produced brands

“Harmony” creates a completely matte surface and is suitable for covering walls in a children’s room, living room or bedroom. The paint applies smoothly to concrete, putty and plastered surfaces. The matte shade can hide the imperfections of the wall.

Its composition belongs to the safe type M1, so you don’t have to worry about the health of your loved ones. Paint consumption on a weakly absorbent surface is 1 liter per 12 sq.m., on a highly absorbent surface—1 liter per 7 sq.m.

Joker paint is a popular model in the Tikkurill paint line. This is an interior coating with a smooth, silky effect. Suitable for application to the walls of the living room, kitchen, children's rooms and corridors.

The paint is a hypoallergenic coating, which is confirmed by the “eco-label” that marks the brand.

This type of paint has more than 20 thousand different shades

When choosing a color, you need to pay attention to the marking “A” for the surface of light colors and “C” for darker shades. Paint consumption for a highly absorbent surface is 1 liter per 7-9 sq.m.

For a “non-absorbent” surface - 1 liter per 10-12 sq.m.

Paint consumption for a highly absorbent surface is 1 liter per 7-9 sq.m. For a “non-absorbent” surface - 1 liter per 10-12 sq.m.

In order to create the beauty of walls and floors, you need to choose Euro12 paint. It is semi-matte and suitable for frequent washing. This is convenient in high-use areas (schools or hospitals).

In houses it is suitable for plastered, concrete and brick surfaces. You can cover your heating radiator with it, choosing from a variety of colors and shades. Paint consumption: for 10-11 sq. m will take 1 liter of product. With an uneven surface - 1 liter per 5-7 sq.m.

"Euro 2" is the best option for covering the ceiling space. The deep-matte interior paint adheres perfectly and, if necessary, is resistant to cleaning with wet cleaning agents.

There is practically no smell from the coated surface. Consumption for low absorption - 1 liter per 10 square meters. m. For strong absorption - 1 liter per 3 sq.m. But, unfortunately, Euro 2 is currently out of production.

For surfaces with high humidity, use Euro 20 paint. It is not subject to wear and tear in bathrooms.

This paint prevents mold. The coating is semi-matte, with particular resistance to water vapor emissions.

It is also used in dry rooms where daily cleaning is required. The paint dries in 4 hours and can be applied even to old paintwork. Consumption on a weakly absorbent surface is 1 liter per 12 sq.m., and for highly absorbent surfaces - 1 liter per 7 sq.m.

Tikkuril paint "Euro 3" is semi-matte, to create rich color in the interior. It is used in rooms with moderate load. Withstands daily washing. Dries quickly and has no odor.

With its help you can create a magnificent interior using any of 20 thousand shades. This coating is consumed with low absorption: 1 liter per 12 sq. m, and with strong absorption - 1 liter per 7 sq.m.

Euro 7 paint is widely used for painting walls and ceilings. It is latex with a matte effect. Lays flat on concrete, brick and fiberboard surfaces. Used to create a unique indoor interior.

With weak absorption, the consumption of such a coating will be 1 liter per 12 sq.m., with abundant absorption - 1 liter per 7 sq.m.

Matte interior enamel “Pesto 10” is used to cover wooden, iron and fiberboard surfaces. Resistant to frequent washing of wall and ceiling surfaces. It has no pungent odor and is absolutely safe in composition.

This is especially important if there are small children in the family. The consumption of such a coating with low absorption is 1 liter per 12 sq.

m, with plenty - 1 liter per 10 sq.m.

Euro Sealing paint is highly opaque and is suitable for creating a matte color in white tones. This paint is suitable for rooms with low traffic and mainly for the ceiling.

Suitable for concrete, brick and fiberboard surfaces. If there are defects on the surface, Euro Sealing will easily hide them. Paint consumption for weak absorption: 1 liter per 10 sq.m., and for strong absorption - 1 liter per 3 sq.m.

Painting with Luya from Tikkuril will not only create a matte surface effect, but will also protect against mold and fungi. Consumption for weak absorption: 1 liter per 8 sq.m., for heavy absorption - 1 liter per 5 sq.m. m.

Remontti-Yassya paint is acrylic, for a designer approach to the ceiling and walls. Suitable for frequent wet cleaning. Environmentally safe for humans. Painting consumption with weak absorption: 1 liter per 12 sq.m., with strong absorption - 1 liter per 7 sq.m.

Types of building materials

The range of products differs in composition and purpose. Depending on the area of ​​application, the mixtures are for interior and exterior use, as well as fire retardant.

Based on their composition, paints are divided into:

• water-based;
• acrylic;
• latex;
• alkyd enamels;
• powder;
• oil

The demand for water-based compositions is due to ease of use, a wide variety of colors and shades. With the advent of new technologies, the scope of application of such materials is constantly expanding.

Paint consumption per 1 m2 for walls and floors

When starting a renovation, the builder must not only correctly determine the necessary materials, but also calculate their quantity. This way you can avoid an unforeseen end of painting only halfway through the repair due to a lack of material.

When starting a renovation, the builder must not only correctly determine the necessary materials, but also count their quantity.

What does the consumption rate depend on?

To determine how much paint is needed per 1 square meter of wall, you need to take into account 4 main parameters.

Covering power determines the ability to paint over old paint of a different shade without leaving gaps. The higher the value of this parameter, the more economical the consumption will be. High-quality materials, subject to dyeing rules, can cover the color of the base in just 1-2 layers, compared to cheaper analogues. The indicator is calculated by the manufacturer and indicated on the packaging, however, all figures are indicated for ideally prepared surfaces when applied in a thin layer

Thus, in a real situation the consumption will be higher.

A prepared surface reduces paint consumption. That is why it is important to pay special attention to the preparatory stage. Also, the factor under consideration affects the final result and the aesthetic appearance of the surface as the repair is completed. The walls, floor or ceiling are cleaned of old dirt, grease and dust

It is also important to remove old peeling paint. If the old paint holds tightly and does not chip, then it is sanded to a matte state. It is advisable to cover the cleaned surface with putty. Rough, porous surfaces absorb a fairly large amount of moisture, which explains the greater consumption, so the walls are then coated with a primer. These materials are cheaper than paint, provide better adhesion of layers, improve the quality of painting, and also reduce material consumption. This rule applies to walls and ceilings. Enamel-based paints can be applied without a primer, but they must be diluted with a solvent and mixed thoroughly. Primer and putty cost significantly less than paint, so surface preparation saves a lot on your budget.

The color of the chosen paint and the color of the base. When planning to replace old dark paint with a new, lighter one, you need to prepare for the fact that it is unlikely to be possible to do this in one step. It is recommended to remove the old paint or apply several layers of new light paint. However, the latter option increases the cost of expensive material.

The next point is important to consider the application method. The most economical option is to spray paint from a specialized spray gun. It evenly distributes the material over the surface in a thin layer. It will not be possible to achieve a similar result with brushes or a roller. However, when purchasing, it is important to consider the manufacturer's recommendations, because some paints are not designed to work with a spray gun.

Are there any differences in flow between wall and floor

The flooring also needs regular repairs. Most often this applies to natural wood floors. Paint and varnishes will help preserve them for a long time and protect them from rotting and mold.

When working with wood, you should take into account that fibers tend to actively absorb moisture, which means consumption will increase

Here it is also important to carefully prepare the material. First of all, the floor is sanded and cleaned as much as possible, after which it is treated with oil, and paint treatment will be the last step

For floors, paints based on acrylic, alkyd resin, oil or polyurethane enamels are most suitable. They are applied with a roller, brushes or spray gun, based on the manufacturer’s recommendations, and the average consumption of floor paint is 300-400 grams per 1 m2. At the same time, working with a brush is considered the most uneconomical.

For floors, paints based on acrylic, alkyd resin, oil or polyurethane enamels are most suitable.

How to calculate

In order to determine the consumption of water-based paint per 1 m² in two layers, there is a calculator. And also all actions can be performed manually. First of all, you should decide which surfaces will be painted and how many layers are expected to be completed. Knowing the geometric dimensions of the room, calculate its area. If it is a wall, you need to remove the area of ​​windows and doors.

Consumption of different types of paint Source otdelkasten.com

Let's assume that the total painting area is 30 m². From the technical specifications it is known that 1 liter is consumed per 10.5 m² of area. We determine that in 1 layer for painting you will need:

30 m² : 10.5 m² x 1 liter = 2.86 liters

Accordingly, two layers will take 5.72 liters. Based on the specific gravity of 1.35 kg per liter, we obtain the required mass:

1.35 kg x 5.72 liters = 7.72 kg

round up and get 8 kg of paint. It is important to remember that to be on the safe side, it is better to increase the data by 5–10%.

How to determine the consumption of different types of facade paints?

Before you paint the facade of your house, you should calculate the consumption of facade paint. You need to calculate the amount that will allow you to carefully carry out all the work and paint the surface in several layers.

Calculation depending on the type of material

The most important parameter that must be taken into account when calculating the required paint composition for facade work is the type of paint. The paint and varnish material is selected depending on the characteristics of your facade. In this case, the consumption for each type will be individual.

Water-based paint

The basis for water-based paint is water, which contains an insoluble emulsion in the form of pigment. After applying such a composition to any surface, the water evaporates and only the pigment base remains in the form of a colored layer.

If you decide to purchase a composition of this type, then you should know that for facade work it is applied in two layers. The time interval between painting two layers should be more than one and a half hours.

• resistance to frost;
• low water permeability;
• lack of response to exposure to ultraviolet rays;
• acceptable cost.

Acrylic paint

Acrylic-based paints and varnishes are an ideal option for facade work. Advantages of acrylic painting:

• duration of preservation of the bright color and protective properties of the coating;
• resistance to aggressive atmospheric factors such as high humidity, wind or direct sunlight;
• ease of maintenance, for which ordinary detergents are sufficient;
• fire safety;
• absolute safety for human health;
• versatility that allows you to process any façade surface, from brick or concrete to solid wood.

As a rule, the consumption of acrylic paint is less than water-based paint. Typically it ranges from 150 to 200 grams per 1 m2. A more accurate consumption of façade paint per 1 m2 depends on how bright you want the painted coating to be. You can finally decide only by directly applying the composition to the surface.

If you get the required shade in one or two layers, then per 1 m2 you will need approximately 130-170 grams. If you need to obtain a more saturated color, you will have to count on 200 grams per 1 m2.

Oil-based paints and varnishes

The oil composition consists of drying oil, color pigments and various fillers. At the same time, fillers can be sold both as part of the paint and in the form of separate solutions. If you are dealing with thickly grated oil compositions, you will have to dilute them a little before applying.

Calculating the consumption of oil paint, like acrylic paint, also depends on the desired brightness of the color. For example, if you apply a small amount of red composition to the surface of façade walls, it will look pink. The standard consumption for painting on plaster is usually 150 grams per 1 m2 and can vary depending on the required color.

Alkyd paint

Alkyd paint and varnish material is based on alkyd resins, which are used in production. Its peculiarity is that for facade work the composition must be diluted with turpentine, kerosene or drying oil. When diluted, each of these components will have an individual consumption of material per 1 m2 of surface to be painted. Therefore, in order to more accurately calculate consumption, you should take into account the number of additional mixtures that are used to obtain a brighter shade.

Traditionally, the consumption of façade paint per 1 m2 of wall surface is small and amounts to about 100 grams. That is, for 10 m2 you will need to spend only a liter of paint. A distinctive feature of the alkyd composition is the creation of a stylish and original appearance. In addition, such paint will protect the facade surface from the appearance of fungi and mold.

Acrylic compounds

Dyes based on acrylic resins are the most popular and frequently used today. In addition to the main component - acrylic resin, the composition contains various additives and substances necessary to give the solution the necessary characteristics.

After the acrylic water-based material dries, a reliable and durable protective layer is obtained, which is not afraid of mechanical stress and high humidity. In most cases, acrylic paints are environmentally friendly and safe for human health. They are suitable for treating walls both indoors and for façade and street work.

The average consumption of acrylic water-based paint is about 250 grams per square meter when applying the first coating, but if you paint, for example, putty that has been previously primed, then the consumption can decrease to 180 grams. When applying the second coat, approximately 150 grams per square meter is usually required. The specific indicator will depend on the type of base and painting technology.