Linseed oil paint NATURA silver-grey
An eco-friendly wood stain based on natural linseed oil, containing mineral pigments. Suitable for staining log houses, the facades of wooden buildings, wooden panelling, floors, furniture and other wooden items. Designed for both interior and exterior use. The paint penetrates deeply into the wood, is wear-resistant and forms a durable finish that is resistant to weathering and UV radiation. Mineral pigments not only colour the wood but also protect it from wear and tear, strengthening the wood’s texture. It protects the wood from moisture and damage, whilst allowing air and water vapour to pass through — the painted wood ‘breathes’.
Eco-friendly natural oil-based glaze paint for wood, contains mineral pigment dyes. Suitable for painting log houses, wooden building facades, wooden panels, floors, furniture and other wooden products. Designed for interior and exterior use. The paint is deeply absorbed into the wood, is wear-resistant, and forms a durable coating that is resistant to atmospheric factors and UV radiation. Mineral pigments not only tint the wood, but also protect it from wear and tear, strengthening the wood texture. Protects wood from moisture and damage, while allowing air and water vapour to pass through — painted wood breathes.
Paint consumption: Paint consumption depends on the type and condition of the wood, averaging 1 litre per 5-12 m². When painting finely sanded cladding boards, 1 litre per 10-12 m²; when painting hand-treated logs, 1 litre per 5-6 m².
Application: Stir the paint thoroughly before and during use. Wood that does not absorb paint well should first be treated with fine sandpaper. The paint should be applied with a soft brush, roller or sponge in a thick layer, and after 2-4 hours, remove any excess paint from the surface with a cloth. Absorption time may vary depending on the type of wood and the desired shade. It is recommended to apply 2-3 coats, applying each subsequent coat after the previous one has dried. For a covering coat, the paint should be applied in a thicker layer and the paint residue should be cleaned from the wood less intensively.
Drying time: 24-48 hours, depending on the absorbency of the wood and the air temperature; the paint takes about 2-3 weeks to cure completely.
Safety: Warning! A piece of fabric soaked in the product may spontaneously combust!
Storage: Store in the original packaging in a warm storage area. Protect from freezing!
Natūra is a natural paint for a natural environment. This paint does not contain organic solvents or synthetic dyes; Natūra consists only of natural linseed oil and mineral pigments.
Such paints have been tested over centuries – linseed paints have been used since the 13th century.
They are still indispensable wherever a natural and healthy environment is valued. Natūra is a paint for natural wooden surfaces: wooden building facades, log houses, wooden panels, furniture and other wooden products. Advantages of linseed paint compared to the currently widely used paints made from synthetic materials:
- a properly applied layer of linseed paint is six times thinner than a layer of alkyd or latex paint, so less linseed paint is used;
- a layer of linseed paint does not shrink when drying, as there is no evaporation of solvents, but during the drying process, linseed oil is oxidised by oxygen in the air, adding oxygen, so it can be said that the dry residue of linseed paint exceeds 100%;
- Due to their small size, linseed oil molecules are absorbed deeper into the surface of the wood, up to 2 mm, while allowing the wood to breathe freely.
- A high-quality linseed paint coating is durable, lasting 10 to 15 years, and even longer indoors. Linseed paint coatings do not crack or peel, as synthetic paints do.
- The pigments used in linseed paints, iron oxides and zinc white, protect the wood from rot and fungal diseases.
- When working with oil paints, workers are not exposed to harmful solvent vapours.
Linseed paint is wear-resistant and, compared to other paints, has good adhesion to the surface, which is ensured by the small size of the linseed oil molecules. Linseed paints do not dry quickly, so when working with them, it is necessary to carefully read the instructions for use or consult with specialists. Natūra is produced as a semi-transparent glaze paint, which allows the user to choose how thick and, therefore, how opaque a coat of paint they want to apply. A characteristic feature of glaze paints is that they highlight the natural texture of the wood.
However, the main advantage of oil paints is their environmental friendliness: they are made from natural materials, do not contain substances harmful to the environment and blend perfectly with other natural building materials, such as wood, making them indispensable when building eco-friendly houses and structures.
Differences between oil-based and synthetic paints
If you own a wooden house or have ever renovated one, you have probably had to deal with painting wood. Polymer paints containing synthetic resins are often used for this purpose. Even if you have chosen a well-advertised, expensive paint, after 2-3 years you may encounter an unpleasant situation: the paint has cracked and begun to peel, leaving the wood unprotected. Problems with paint “fading” also often arise, and the wood remains grey under the transparent coating as a result of exposure to the sun’s ultraviolet rays. All this leads to the need to renew the paint, which cannot be done properly without removing the old layer. This results in significant additional costs and is a laborious process. Paints based on natural oils do not have this disadvantage. This is exactly what NATURA linseed oil-based paint, produced by the Latvian company STAFOR (Kuldīgas iela 53a, Rīga, 67603399, www.stafor.lv), is like. Linseed oil, which is the basis of the paint, does not form a hard film on the surface of the wood. It is deeply absorbed into the wood, preventing moisture from penetrating it. At the same time, the wood remains vapour-permeable (breathable), without creating a humid environment conducive to pests. The mineral pigments in the composition are more resistant to “fading” than synthetic dyes. A special natural nano-additive provides additional protection against changes in the shade of wood under the influence of ultraviolet rays. Currently, NATURA paint has been successfully improved, with wax added to the product to help protect the wood from moisture. Natural paints are a good alternative to modern synthetic paints, especially for protecting wood. They last 2-3 times longer, are much more pleasant to work with, and do not produce harmful vapours from organic solvents.
Here is what Konrad Fischer (member of the Bavarian Architectural Society, chairman of the German Society for the Preservation of Historical Monuments) writes about natural paints for wood:
“… do not believe empty promises about the reliability of varnishes and paints containing synthetic resins. I have never seen synthetic paints that have lasted 24 months without damage. I have only observed a good service life with natural paints, including in my own home… Flaxseed oil molecules are about 50 times smaller than synthetic resin molecules and about 10 times smaller than the densest pores in wood. That is why paints made from pure linseed oil (without unnecessary resins, hardeners and other additives) are superior to synthetic paints in many respects, both in terms of absorbency and elasticity… If it is necessary to evaluate paints with artificial hardeners for painting wooden structures, I can confidently say that, according to all quality assessment criteria, with the exception of drying time, they will be inferior to linseed oil-based paints. Do not give in to the temptation to use quick-drying coatings, otherwise you will have to regularly overpay for necessary repairs…”.
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Additional labelling: P102 — Keep out of reach of children.
Thermowood and its treating
Wood is a typical example of how humans have confidently embarked on experiments to optimise the microstructure of materials. The main manifestation of this can be seen in so-called modified wood, which appeared in the middle of the last century (pressed wood, lignammon, etc.). The new material is several times stronger than ordinary wood and is used in mechanical engineering as a substitute for non-ferrous metals.
Today we will learn about thermowood, which is produced in special vacuum furnaces with specific operating modes. Thermowood not only has enhanced physical and mechanical properties, but is also decorative and durable, resistant to decay and less flammable.
The process of producing thermowood is based on treating wood at a high temperature (170-220 °C) in a steam environment. Heat treatment changes the structure of wood cells, removing moisture, bacteria and acids from it. Thus, “heated” wood is a very poor breeding ground for all types of fungi, mould and rot, making it much more resistant to environmental influences.
Properties of thermally treated wood
- Resistance to decay – thanks to a significant reduction in the content of hemicellulose, which is a breeding ground for decay, the wood becomes more resistant to it, and its estimated service life is five times longer than that of untreated wood.
- Stability – with lower equilibrium moisture content, the radial and tangential expansion of the wood is also reduced, allowing the use of longer and wider materials;
- Colour change – the wood acquires colour throughout its thickness, and the colour change depends on the duration and temperature of the treatment, as well as the type of wood, but the colour can vary from light brown to chestnut brown or even mocha;
- Thermal conductivity – thermowood has approximately 20-25% lower thermal conductivity than untreated wood, making it ideal for baths/saunas and rooms where thermal conductivity must be low, or for buildings where there is a large difference between the internal and external temperatures and humidity levels;
- Resins – these evaporate as a result of heat treatment, making the material safer for users and important for surface treatment.
- Strength – thermally treated birch and pine wood is comparable to oak in terms of strength characteristics.
Thermowood can be used for both interior and exterior work. Thanks to its properties, the material is well suited for terraces, house cladding, siding, and outdoor furniture. It can be used for floors and bathrooms, as well as other rooms with high humidity levels.
Thermowood does not absorb moisture well, but it is easy to impregnate with environmentally friendly paints and stains based on linseed oil, as linseed oil has smaller molecules. After heat treatment, the wood becomes darker. To visually “revive” it and make it lighter, you can use NATURA linseed oil-based paints with or without pre-bleaching of the thermowood. NATURA paints provide long-lasting and fade-resistant protection for wood.
