Wood surface protection: wood oil

Recommendation points

To preserve the unique properties of wood, its appearance and at the same time to protect it from the “main enemy” – high humidity, oil is used. Paint or varnish creates an impervious film on top, and oil penetrates inside through natural capillaries, displacing moisture and air from them.

Wood surface protection: wood oil


By the type of the main component, the oil is: natural, mineral and combined.

By composition and degree of processing: “pure”, modified or mixtures (with the addition of wax, solvents, driers, etc.).

Natural oil

This category includes products from plant materials.. But not all vegetable oil is suitable for wood protection.. The most common are two varieties: linseed and tung. Both types of oil are capable of absorbing oxygen, that is, air-drying.

Linseed oil is a traditional for our country means of protecting wooden structures, furniture, household items and accessories. The main disadvantage is that in its pure form it creates a very thin and soft layer, which is washed out rather quickly. In addition, it dries for a long time. To speed up its drying and improve its protective properties, the oil is modified – desiccants are added, that is, drying catalysts (for example, manganese or cobalt salts), wax or natural resins (varnishes) are dissolved.

Wood surface protection: wood oil

Tung oil can be called exotic. It is made from nuts of the same tree species. Until recently, it grew only in China, now it has begun to be cultivated in Latin America. The “exotic” origin explains the rather high price, but in terms of protective properties, tung oil is more effective than hemp oil – it can even be used in its pure form, provided that several layers are applied. The main disadvantage, like linseed oil, is that it dries for a long time, so it is used in a modified form or with the addition of driers..

Wood surface protection: wood oil

Vegetable oils from other types of raw materials (hemp, sunflower, soy, etc.) either do not absorb oxygen at all, or they do it very slowly, so they practically do not dry out and are quickly washed off. In their pure form, their use is possible for internal parts of structures. But in processed form, with the addition of solvents and driers, these varieties can serve as raw materials for obtaining natural drying oil..

Mineral oil

Ideally, processing with mineral oils is possible if they are refined and do not pose a threat to human health and the environment..

For factory products according to the approved “recipe” it is, but in everyday life they often use varieties of technical oils that have a different purpose. It is even worse if the so-called mining is used.

Wood surface protection: wood oil

In principle, mineral oils practically do not dry out or wash off. Their use is suitable only for outdoor work, where reliable protection of wood from decay is required, and decorative processing is not required. The most famous examples are wooden sleepers and poles..

Combined mixtures of mineral and natural oil are also used mainly to protect wooden parts and structures of non-residential premises, as well as for outdoor work.

Internal works

Natural oil, impregnations and polishes based on it are used for decorative and protective treatment of wooden enclosing surfaces of residential premises that have no paintwork or are not laminated: floor coverings (parquet, solid wood, engineering board, etc.), wall panels (lining , block house, imitation of timber), suspended and suspended ceilings. It is also used to treat furniture, wood accessories and utensils that are not varnished..

Wood surface protection: wood oil

Another area of ​​application is oil-based impregnations, primers and septic tanks for interior structures of living quarters.

Typically wax, natural resins, solvents and special additives are added to oil-based protective compounds. They improve the penetration properties, speed up drying, increase the durability and wear resistance of the coating.

They can be colorless or contain pigments – to emphasize the natural texture and color or create new shades.

Wood surface protection: wood oil

A separate category is special oil-based formulations for furniture and wooden bath surfaces.

Outdoor work

Scope of application is the protective treatment of wooden structures with oil septic tanks, primers and hydrophobic compounds.

Wood surface protection: wood oil

Much less often it is used for decorative and protective treatment of external surfaces..

Application technology

The most common way to apply oil at the household level is with a brush, roller or spray gun..

As a rule, this method is used to process finished structures. The method has only one drawback – the shallow penetration of oil into the structure of the tree. Therefore, oil and oil formulations are applied in several layers, and the protective treatment must be periodically repeated..

Wood surface protection: wood oil

In the factory, oil treatment can be carried out by soaking, immersing the wooden part in a cold or cold-hot bath.

The most effective method is pressure impregnation in special chambers. For example, this is how wooden sleepers are treated with coal-tar creosote..

Rate article
Tips on any topic from experts
Add comment

By clicking the "Submit comment" button, I consent to the processing of personal data and accept privacy policy