Paint specific weight: how much 1 liter weighs
In construction, paints are used not only for decoration but also as a way to protect surfaces from adverse environmental effects. Requirements for floor, wall, radiator and ceiling paints are different. Their chemical composition, purpose and place of use also differ.
Types of Paint
All paints used today in construction and finishing can be divided into three large groups.
- Emulsion paints.
This category includes compositions based on a stable emulsion of water, binder and pigment. Depending on the base, water-emulsion paints can be:
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acrylic;
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mineral;
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silicate;
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silicone.
Emulsion paints are easy to work with: they wash off hands and tools easily, dry quickly, do not have a strong unpleasant odor and create a pleasant texture. The dried surface is fairly resistant to moisture, especially in paints with special additives such as silicone, latex or liquid glass in silicate paint.
These paints do not separate, the surfaces continue to breathe, and special water-emulsion compositions can be used for exterior painting: they are frost-resistant, moisture-resistant, do not fade in direct sunlight and do not wear off when cleaned with brushes.
Water-dispersion paints are a type of emulsion paint. Their main feature is increased moisture resistance. Such compositions should be applied at the temperature specified by the manufacturer.
- Alkyd paints.
The binder in this category is alkyd resin. Alkyd paints include:
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enamel paints;
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oil paints.
Alkyd paints are resistant to weathering, light and water. They can be used on wooden and metal surfaces, as well as on plastered surfaces indoors or outdoors.
Alkyd paints dry for quite a long time and release harmful substances while drying, because their base is drying oil in oil paints or varnish in enamel paints. White spirit, gasoline, turpentine and similar compositions are used as solvents.
- Silicate paints.
These paints are based on liquid glass diluted with water. This category also includes lime and other mineral paints, for example cement-based paints. They are prepared immediately before use.
Features of silicate paints:
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poor compatibility with other paint types;
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surfaces under them do not breathe and vapor is not transmitted;
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moisture permeability because of the loose dried layer;
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resistance to temperature changes.
They are used only for painting plastered surfaces in rooms with low humidity. They have a wide color range because they contain alkali. For the same reason, they must be handled very carefully.
There are many other paint types as well, because the modern selection is very wide. In industrial premises, epoxy compositions are used in places with high humidity, for example when building pools, and polyurethane paints are used for coatings that require increased wear resistance.
Paints can be classified by different principles:
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by binder type: oil, silicate, acrylic, silicone, epoxy and others;
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by thinner type: water or solvents;
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by area of application: industrial, automotive, artistic or construction;
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by appearance of the painted surface: matte, semi-matte or glossy;
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by purpose, depending on the surface material.
Paint Weight
Paint density is an important technical indicator. Different types of paint have their own density ranges. Specific weight values are shown in the table below.
| Paint type | Density (g/cm3) | Specific weight (kg/m3) | Liters in 1 kg |
|---|---|---|---|
| Acrylic | 1.3-1.4 | 1300-1400 | 0.740 |
| Silicate | 1.15-1.2 | 1150-1200 | 0.833 |
| Silicone | 1.55 | 1550 | 0.645 |
| Oil | 1.4-2.5 | 1400-2500 | 0.52 |
| Polyurethane | 1.5 | 1500 | 0.67 |
| Epoxy | 1.4 | 1400 | 0.714 |
| Enamel | 1.2 | 1200 | 0.833 |
Frequently Asked Questions
Can the density of paint be used for precise calculations?
The density and weight values for paint in this article are reference values. They are suitable for preliminary estimates, but design, construction, production and other critical calculations should be checked against standards, material datasheets or measurement results.
Why can the actual weight of paint differ from the table?
The actual weight of paint depends on composition, moisture, temperature, porosity, fraction size, material grade and measurement conditions. Because of this, real values may differ from the average table data.
How do you calculate the mass of paint from density?
For an approximate calculation, use the formula: mass = density × volume. If the density of paint is given in kg/m³ and the volume is in m³, the result will be in kilograms.