Paint consumption per 1m2 by type of composition and surface

Painting is one of the most popular types of decorative wall decoration. This is due primarily to its simplicity and budget. Many apartment owners can use their own paint to transform the interior of their home. However, they often face the question: "How to calculate the amount of paint that will be needed to carry out repairs?" The amount of the estimated cost of the work depends on the correct calculations: the likelihood of purchasing an excess volume, or vice versa, lack of paint, decreases.

Expense factors

Before calculating the amount of paint needed to finish a room or apartment, you should familiarize yourself with the factors affecting the consumption of material. It is usually customary to calculate the consumption of plaster, putty and paint on 1 m 2 of wall.

At first glance, the calculation is quite simple - you just need to calculate the area of the treated surfaces of walls and ceilings, and then read the instructions for use on the package, how much paint is needed per square meter of surface.

But in this way it is possible to calculate the paint consumption only for the “ideal” case - a smooth and even surface, while well primed. In fact, everything is much more complicated - a number of factors influence the required amount of paint for walls:

Type of paint composition.
Paint color.
Type of surface to be treated.
The method of applying paint.

To correctly calculate the amount of paint, you must consider all these aspects.

Type of paint

One of the main factors influencing the calculation is the type of paintwork composition, its fluidity and the ability to be absorbed into the wall surface. For different types of mixtures, this indicator, called "hiding power", can vary significantly. The table gives an approximate calculation of the flow rate for different types of coloring compounds.

Calculation of the number of different types of paint

Acrylic

This paint composition is a water-dispersion mixture made on the basis of acrylic. The painted surface has a matte shade, tinting is done using special colored pastes, also created on the basis of this raw material.

You can use such compounds for both indoor and outdoor use. Among the advantages of acrylic compositions can be called their resistance to ultraviolet radiation, as a result of which they do not fade in the sun for a long time and can stay on facade walls without losing their decorative qualities up to 5 years.

Acrylic Compounds

The consumption of acrylic paint for painting walls is about 1 liter per 8 sq.m. surface. True, this indicator is calculated for painting in one layer and can vary significantly for compositions produced by different manufacturers.

The better the product, the less need for acrylic paint per 1 m 2. It should also be remembered that the final consumption of the paintwork is calculated based on the required number of layers. The acrylic mixture is applied to the walls in at least two, or even three layers.

To reduce material consumption, it is recommended to pre-coat the walls with primers. For acrylic paint, you can prepare a primer with your own hands - you should mix a white acrylic composition with water in a proportion of 50% / 50% and apply it to the walls.

Water emulsion

Water-based paint is created on the basis of an aqueous solution, so it is afraid of excessive moisture. To get rid of this drawback, special additives are introduced into its composition, which impart water-repellent properties to the mixture.

First of all, the consumption of water-based paint per 1 m 2 depends on its density. An excessively thick mixture can be diluted with the same water. The application of the emulsion is usually done in a thin layer. After the first coat is completely dry, painting should be repeated.

The calculation of water-based paint per 1 m 2 is made from the standards of 1 liter per 10 sq.m. the processed surface. In reality, it is much more difficult to calculate the paint, and this indicator can vary over a fairly wide range - from 1 liter to 6-7 sq.m. up to 1 liter per 18 sq.m. It all depends on additional factors: surface structure, density and color of the paint mixture.

Oil

In the manufacture of oil formulations, a drying oil is usually used as a solvent. Such a solution begins to polymerize only in fresh air after application to the surface to be treated.

Oil paint

The most popular oil composition is PF-115 enamel. She is able to create a strong dense film with a uniform texture. The consumption of oil paint per 1 m 2 on average is taken as 120 - 130 g when painting the wall in one layer.

When calculating how much paint is needed, you should know that for oil formulations, consumption also depends on their color. The type of pigment affects the density of the mixture and its “covering”. For mixtures of different colors, the calculated consumption rate of 1 kg is for:

white - up to 10 sq.m.
black - up to 20 sq.m.
blue - up to 17 sq.m.
blue - up to 15 sq.m.
green - 13 sq.m.
yellow - up to 10 sq.m.

As can be seen from the above data, the darker the color of the oil mixture, the greater the area you can cover with it.

The processed surface

The calculation of paint consumption also largely depends on the texture and type of the surface to be painted. When applying a paint and varnish composition on decorative plaster or concrete base, this indicator can increase several times in comparison with a smooth dense surface: sheet steel, galvanizing, etc.

An approximate indicator of the consumption of "universal" (average) paint for various processed substrates in g / sq.m:

Sheet metal - 200 - 250.
Plywood, fiberboard, particleboard - 300 - 350.
Concrete, plaster, wood - 350 - 400.
Slate, logs, brick - 400-450 and above.

Brick wall painting

A variety of methods are used to reduce surface porosity. The bearing base is covered with primers, wooden structures - with linseed oil, after grinding them.

Soil compositions fill small pores and microcracks on the surface of painted walls. This reduces the absorption of paint and reduces the “inappropriate spending" of the paint composition.

Application Method

The application method also affects the calculation of material consumption. As practice shows, when painting with a paintbrush or roller, it takes about 10-15% more paintwork to work than when using a spray gun. But at the same time, it is far from possible to use a spray gun in all cases.

Spray painting the wall

It is not suitable for applying thick oil enamels or nitro enamels to the walls.

After reviewing the above data, a person who does not have the professional skills of a plasterer-painter can make an idea how to calculate the consumption of the composition. Of course, there are a lot of aspects that affect this indicator, and it is unlikely that it will be possible to get a result accurate to a gram, but an approximate idea will allow you to get it.

The video shows the consumption of paints of various types.

Calculation of paint depending on consumption and area

Consumption varies depending on the type and condition of the surface to be coated. A plastered wall absorbs more composition than metal, and wood more than plaster. Absorption is influenced by roughness, porosity and moisture of the wood. For example, a log that has been exposed for a long time without any coating absorbs much more paint than a new surface.

Paint consumption in l / 1m 2 is usually indicated on the can.

What determines the consumption of paint per 1 sq / m

Arriving at the store, you will notice that the banks already have written the consumption for painting 1 sq.m. In these calculations, data are taken into account without the slightest error, but this does not happen. In fact, a little more mixture may be required, and here it is worth being able to determine how much exactly.

surface (how smooth it is)
paint textures
tools
number of layers
professionalism.

How to calculate paint consumption correctly: basis

A large amount of paint purchased is an excessive waste financially. The disadvantage will also negatively affect the progress and sequence of work in the future, because you can not guess with the color, and the same shade will differ even from the manufacturer. Therefore, it is important to initially correctly calculate the norm, taking into account the features and density of the surface for applying the composition.

Rules for calculating the amount of paint

The first step is to calculate the perimeter of the room, for this we multiply it by the height of the ceilings. Next, subtract the area of windows, doors, etc. Thus, it turns out the number of square meters that need to be painted.

To find out how many liters are needed, you need to multiply the amount of consumable composition (the indicated number on the back of the can instruction) by the wall area. Do not forget that this amount is under ideal (or close to ideal) conditions.

The surface

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

Paint consumption per 1 sq.m. surface:

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

These data are for comparison of materials. Since it all depends on the depth of the bumps, the basis for painting, such as paint.

When you need to paint several layers

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

when working on a wooden surface treated for the first time,
if you want to achieve a deep saturation of the matte shade,
with a liquid consistency of the composition,
when applying bright shades,
when applying one layer vertically, another - horizontally.

Examples of paint calculations per 1 sq. M of surface

If one wall is 5 meters long and the other is 6 meters long, add and multiply by 2, the perimeter of the room is 22 meters. To get the area of the painted surface, we multiply by the height of the ceilings - 2.5 meters. Total, 55 sq.m. total area.

The next step is to subtract the windows (0.7 m * 1 m, 0.7 m * 0.9 m) and the door (1.5 m * 0.6 m), the working surface for painting is 52.77 sq.m. The paint is applied in two layers, so you can multiply either the number of square meters, or the number of cans by two.

When using economical paint for interior walls, with a flow rate of 0.12 l per sq.m., we multiply this figure by the number of meters and we get 12.7 l. Based on these calculations, you should buy 13-14 liters of paint.

Is it possible to save

First of all, trust a professional team. It is not so expensive, it seems, especially in comparison with the cost of materials. As for the paint, it is better to prime the walls once again, the base should be flawless. The best option before painting - clean, even walls.

Cladding walls with drywall also saves on paint. However, in this case, the savings will be obvious with repeated stains for the reason that the first time the costs go to leveling with drywall.

Calculation of the coloring composition before work allows you to find out the amount of costs without unpleasant surprises in the future. It is important to understand that even one classification of paint from one manufacturer may differ, and therefore the purchase in one batch will save both time and money in the future.

Features of acrylic paint

The basis of acrylic dispersions is water and polyacrylates - polymers derived from acrylic acid and other related compounds. Water is a binder component.

When applied to the surface, it evaporates, as a result of which the paint dries quickly, leaving a thin, flexible and durable film on the wall or ceiling.

Acrylic-based paints and varnishes are characterized by:

safety for people of flora and fauna,
environmental friendliness
high adhesion to any type of surface,
lack of bad smell
long term of operation (up to 10 years),
resistance to adverse factors (sunlight, freezing temperatures, water or high humidity),
wide color palette
the ability to create matte and glossy coatings,
availability.

VGT interior acrylic paint is suitable for painting wallpapers.

Acrylic paints are suitable for any type of surface. Waterborne polyacrylate dispersions can be applied to plastered and unplastered walls made of concrete slabs, bricks, cinder block.

They can cover surfaces of wood, particle board or fiberboard, MDF, polystyrene and polystyrene.

Aqueous emulsion and water dispersion mixtures are easily applied with a paint roller, brush, foam sponge and spray gun.

Materials based on polyacrylates are divided into 2 categories - for indoor and outdoor use. Walls and ceilings in houses and apartments, children's and medical institutions, workrooms and production shops paint interior compositions. Facade mixtures are suitable for painting exterior walls, home gardens, garden figures, architectural structures and artistic and decorative elements erected in the open.

How to calculate the area

To calculate the total amount of material needed for repair, you need to calculate the surface area to be painted. To find the desired value, it is worth recalling the school course in mathematics. When painting the ceiling, it is enough to measure its length and width and multiply the obtained indicators (in meters).

To determine the total area of the walls will have to do more complex calculations:

An example of calculating the area of a wall with a doorway.

For rooms, the perimeter of the floor is multiplied by the height of the walls, for facades - the perimeter of the house is multiplied by its height.
Find the area of all windows and doorways.
If you need to additionally paint niches, ledges, columns or half-columns, calculate the size of their surfaces.
Determine the total area for painting - subtract the second from the first result and add the quadrature of additional architectural elements to the obtained value.

After all the calculations, you can proceed to determine the consumption of acrylic paint.

How to make a calculation

To determine how much material is needed to stain 1 sq. m, several factors should be considered:

Application Method - roller, spray gun or paint brush. The first 2 options are the most economical, because they allow you to create a thin layer of paint on the surface. When using a brush, this effect is impossible to achieve.
Base type. For painting dense and smooth surfaces less material is required than for treating porous structures. Rough and loose materials are able to absorb liquid compositions, thereby increasing their consumption.
Base preparedness. Primed walls and ceilings require less paint dispersion than surfaces of the same type not coated with acrylic liquid.
Number of coats of paint. Polyacrylate dispersions are applied in at least 2 layers. If the color of the base is radically different from the selected shade, the number of layers can increase to 3-5. Each subsequent layer leads to an increase in paint consumption by 1.7-2 times.

The manufacturer’s tips printed on the product’s packaging will help reduce material consumption.

0.25 kg of acrylic paint (1 coat) is approximately spent on 1 m2.

Wallpaper paint consumption

When calculating the volume of acrylic dispersion necessary for painting non-woven wallpaper, you should focus on the upper limit of the consumption rate indicated on the bank or bucket.

To paint the textured surface, about 200-250 g of material per square meter will be required. mIt is better to paint smooth wallpapers with a short pile roller (5-10 mm), for relief surfaces a tool with an average pile length (10-25 mm) is more suitable.

Acrylic paint consumption during facade work

The exterior walls of the building should be painted at an ambient temperature of + 5 ... + 35 ° C. For finishing work, it is advisable to choose dry, calm weather. To save paint, you need to prime the surface of the facade and wait for the complete drying of the composition.

Thanks to this preparation, the consumption of water dispersion will not exceed 180-200 g per 1 sq. m. If you apply the paint directly on plaster, brick or cinder block, the amount of consumable material can increase to 220-250 g per 1 square. m

Costs of textured acrylic paints

Textured, or structural, paints are great for finishing internal and external walls. With their help, you can mask small defects on the wall and make a decorative relief coating.

The method of applying textured compositions differs from the method of applying aqueous dispersions: First, the material is distributed over a small area of the wall, and then the improvised relief is created with improvised tools. This technology requires a large amount of paint, so the estimated consumption of structural mixtures is 0.5-1.2 kg per 1 square. m