How to process a wooden house inside and out. How to process a wooden house outside? Wood preservatives according to solubility

A wooden house gives people the opportunity to enjoy the comfort and coziness of environmentally friendly housing. But at the same time, a tree is a living organism, and wooden buildings need more care than brick and concrete structures. Natural phenomena, such as rain, wind, sun, do not have the best effect on wood, which, under their influence, ages and collapses. Insects and microorganisms, which are very fond of the woody structure, where they are nourished and warm, make their contribution. Treating a wooden house from the outside with special antiseptic agents that protect the tree from the negative effects of natural and biological factors will help prevent destructive processes.

Living in a house made of untreated wood lumber is dangerous for humans, because fungi and mold appear on the wood, which are harmful to health, bugs that eat wood settle, and decay processes begin to develop.

If these processes are given the opportunity to develop uncontrollably, then after a short period of time a wooden house will become uninhabitable. Timely processing will prevent all these unpleasant phenomena.

Any, both new and old wooden house needs processing. There are three stages of processing for a new building:

  1. Preservation of logs and beams at the production stage or self-treatment at the construction site before the construction of the structure.
  2. Processing immediately after construction.
  3. Covering the house with an antiseptic after going through the shrinkage process, 6-12 months after construction.

An old log house needs to be processed every 3-5 years, depending on the method of finishing and the quality of the material.

How to process a log house from the outside? The answer to this question depends on what tasks need to be solved with the help of processing. There are several groups of funds designed to protect the external walls of a wooden house from various negative factors:

  1. Antiseptics. Designed to protect wood from mold, fungi, microorganisms and insects. These drugs prevent wood decay, and also effectively fight existing foci of biological damage.

Antiseptics are presented in two forms:

  • Impregnating hard-to-wash compositions. Impregnations are deeply absorbed into the wood structure and are not washed out for years, protecting the wood from biological influences.
  • Cover preparations. After treatment with these agents, a protective film is formed on the surface, which does not allow moisture to penetrate into the wood. Film-forming compositions are especially relevant for bath treatment, because. they are resistant to high temperatures.
  1. Whitening agents. Designed to brighten wood. The preparations bleach the areas covered with a blue bloom, and at the same time destroy the fungi that cause the wood to darken.
  2. Flame retardants. Give wood resistance to open fire. A wood surface treated with this agent does not ignite instantly, as untreated wood usually ignites, and can withstand an open flame for several hours.
  3. Preservative impregnations. Ensure the safety of wood. Impregnating compounds are responsible for the smoothness of the surface, prevent cracking and the formation of irregularities.
  4. Primers. Primers have protective properties, protecting wood from external influences. In addition, they provide good adhesion of paints and varnishes to a wooden surface. It is recommended that before painting the exterior walls of the house, coat the wood with a primer.
  5. Protective and finishing compositions (varnishes and paints for wood). They are primarily intended for decorative finishing of the walls of the log house, but at the same time they have protective properties.

Outdoor treatment products are used to protect the outer walls of a wooden house, which are constantly exposed to harsh outdoor conditions: ultraviolet radiation, precipitation, temperature changes.

In this regard, the main requirements for antiseptics for outdoor work are resistance to any manifestations of bad weather and ensuring reliable protection of wood from adverse natural factors.

It should be noted that many types of antiseptics intended for external work have a persistent unpleasant odor and contain harmful components. For external compositions, such indicators are acceptable, however, when working with them, care should be taken and protective equipment should be used.

There are products for a wooden house that combine different properties: they protect wood from decay, mold, insects, fire and at the same time form a decorative coating on the surface. The value of such compositions is low, since they are ineffective. The best result can be achieved when using several highly specialized tools.

If impregnation is required for raw wood, the moisture content of which is more than 20%, it is necessary to use alcohol-based preparations. Alcohol molecules contribute to a deeper penetration of the antiseptic into the structure of the tree.

Concentrated products are much more expensive than factory-diluted products. However, the consumption of the concentrate is an order of magnitude less than the composition ready for use. Using a concentrated preparation, it is necessary to dilute it strictly according to the manufacturer's instructions.

To decide how best to process wood, you need to take into account the following factors:

  • range of tasks to be solved;
  • funds consumption per 1m2;
  • number of processing layers;
  • method of applying the composition;
  • drug resistance to natural factors;
  • guaranteed service life.
  • what effect the agent has (prophylactic or therapeutic).

  1. Primary. Carried out by lumber manufacturers or carried out during construction. It is especially important to properly process the elements of the log house that are in contact with the soil, because. they are exposed to moisture more than other parts. These are the lower crowns of logs, piles, rough floors, foundation, outer and inner walls of the basement.
  2. Preventive. Healthy wood is subjected to such treatment in order to prevent the formation of mold, fungus, insects and to prevent decay processes.
  3. Therapeutic. Processing is performed on a tree that has foci of biological damage. Remedies stop decay, kill fungus and mold that have penetrated deep into the layers of wood.

Please note that preventive agents should not be applied to diseased wood. Preventive antiseptics cover the tree with a film, under which microorganisms will continue to quietly multiply. Therapeutic agents can be applied as a preventive measure in the event that the operation of the house is expected in adverse conditions.

Stages of external processing of a wooden house

The processing process consists of the following steps:

  1. Applying an antiseptic. A deep penetration antiseptic is used, which is applied in one of three ways: with a roller, wide brush or spray gun.
  2. Treatment with a fire retardant is carried out two weeks after applying the antiseptic. Usually 3-4 coats are required for effective protection.
  3. Finishing is carried out no later than two months after antiseptic treatment, since the protective agent can be washed off by precipitation. Finishing options: exterior walls can be varnished or painted, decorative plaster can be applied or the surface can be sheathed with siding or clapboard.

The ends are the most vulnerable places of the log house, intensive absorption and evaporation of moisture occurs through them, which leads to deformation and the appearance of cracks. Therefore, processing with protective equipment is of particular importance when it comes to the ends of a wooden house.

Protective compounds create a breathable film on the ends that repels moisture and regulates evaporation. Depending on the condition of the ends, the preparations are applied in three to five layers. Single processing is not recommended. It is recommended to use oil-based or water-based products, for example, Belinka's water-soluble antiseptic has proven itself well.

If the ends have deep cracks affected by fungus and rot, a deep penetration compound must be used. It is advisable to treat with preparations that change the tone of the wood, so it is easier to control the degree of application.

Primary treatment is carried out during construction, re-application of an antiseptic is required every 5-7 years, during which time the previous coating is usually washed off.

Features of wood treatment with an antiseptic

The antiseptic is applied only after cleaning, grinding and degreasing the treated surface.

It is best to start processing the exterior walls from the shady side of the house. First, treat damaged and problem areas.

If the log house was erected in the summer, the antiseptic must be applied no later than two weeks after construction.

It is not worth processing a winter frame from a bar of natural humidity immediately, since the composition will freeze at sub-zero temperatures, and in the spring it will thaw and be washed off. It is advisable to start work at a temperature not lower than 10 degrees.

Processing a house from glued laminated timber can begin immediately after construction, regardless of the time of year.

Difficulties of self-processing

It seems to many owners of wooden houses that the antiseptic treatment of the outer walls of a log house is an easy and simple job. Indeed, if you look at it, then there is no difficulty in processing with an antiseptic, but only if knowledgeable and trained specialists who have repeatedly carried out the treatment and know all its subtleties are taken to work.

If non-professionals try to do the treatment, then, as a rule, they find it difficult to choose the drug and do not know how to apply the product correctly. But the right choice of antiseptic and adherence to the technology of its application are the most important conditions for high-quality and durable processing.

Home masters make other unforgivable mistakes:

  • due attention is not paid to surface preparation;
  • one layer of antiseptic is applied, which guarantees short-term protection of wood;
  • processing is carried out at low temperatures.

All this affects the quality of processing and requires repeated work.

Antiseptic treatment of a wooden house is one of the main services provided by Master Srubov. Our specialists carefully and thoroughly approach the selection of preparations for the treatment of a log house, taking into account all the features of a particular object. We guarantee fast and high-quality processing, which will protect your home from any adverse effects for many years.

You can leave your application or contact us at the coordinates on the page in a way convenient for you.

Wooden houses are one of the most attractive types of dwellings: they are beautiful and environmentally friendly, and living in them has a beneficial effect on the health and general condition of people. In order for your home to retain all these qualities, proper processing of a wooden house and its walls, both inside and out, is necessary.

An example of processing a two-story cottage made of profiled timber

Wood materials have the ability to absorb moisture. Any changes in the level of humidity or temperature lead to their destruction. Outwardly, this will manifest itself in the form of swelling, drying out of the walls, the appearance of cracks on the outside, or the tree may simply begin to rot.

In addition, there are a number of microorganisms that can spoil wood materials. These are fungi, algae and insects that can cause unwanted darkening of the walls, as well as stains on the outside of the house and mold inside the room.

It is very important to protect your home from a possible fire.

Types of wood processing

A number of manufacturers process materials in the factory, supplying already processed products to the construction of a residential building. But there is also the option of treating with an antiseptic at home.


Wall treatment inside a wooden frame

After finishing the processing of wood materials and the subsequent construction of the house, additional processing on the outside will be required for the walls of the house (both indoors and from the street), flooring and everything that may come into contact with water.

For all the listed types of objects, there is a special type of impregnation that will help to keep them in excellent quality during the use of a dwelling for a very long period.

It is necessary to subject wood materials to primary treatment with an antiseptic for the reason that building a house will take quite a long time. Building materials will be stored outdoors and will encounter many adverse factors that will affect their condition. At this stage, it is necessary to treat the walls with a hard-to-wash antiseptic, which is able to protect the wood inside and outside the room from external factors for 2-8 months and will not affect the color or properties of the wood. Do not forget that wood materials must be stored on special linings to avoid contact with the ground, which will also adversely affect their condition.

To date, there are many varieties of antiseptic, which can be divided into 3 groups:

  • water;
  • oil;
  • chemical.

Before treatment with an antiseptic, you will need to calculate the area of ​​​​the surface to be treated. In the manuals for all antiseptics, information is attached on the consumption of antiseptics per 1 meter. This will accurately calculate the amount of antiseptic that may be required.

Basic processing rules

Before starting treatment with an antiseptic, it is necessary to clean the wood materials from the outside, for example, using a metal scraper. Hard-to-reach places or areas of wood that have damage are processed first, and only then smooth and easily accessible.

At an ambient temperature below +5 ° C, it is impossible to treat the walls of the house with special solvents. And it is forbidden to carry out treatment with antiseptics, which tend to dissolve in water, at a temperature below +10 ° C. Processing by any other means cannot be used if the air humidity is above 80%.

The construction of wooden country houses is popular in many countries of the world. Every owner wants his house to retain its beauty and quality for many years to come. The processing of the walls of a wooden house is necessary so that a few years after the construction, the wooden house does not look like a barn.

Features of wooden buildings

When building a house, cottage or building from a wooden beam, you need to learn about some of the features of such buildings:

  • a wooden house is an environmentally friendly dwelling. Such a house has a positive effect on human health, naturally maintaining good humidity, creating a favorable microclimate inside the premises;
  • wood does not like sudden changes in humidity and temperature. This can lead to swelling, shrinkage, cracking of the timber and its further destruction;
  • wood is an excellent breeding ground for harmful microorganisms that destroy it. The most dangerous is the porcini mushroom, it is able to destroy the beam in a short time;
  • wood is sensitive to fire, so it is necessary to treat it with special fire-fighting compounds.

Reasons for the destruction of a wooden beam

The main negative impact on this natural material is exerted by the following factors:

To secure the destruction of your dacha due to one of these factors, it is required to carry out the processing of walls inside and outside the house.

Beam protection

When a house is built, wood must be stored properly so that it does not receive critical damage before it is used for its intended purpose. For storage, a canopy of the required size is built. Flammable substances should not be stored near it, and the beam should not lie on the ground. Throughout the construction, the building material must not be allowed to be damaged or completely destroyed.

From already affected areas, mold can be removed by grinding

The second stage of tree protection will be its treatment with an antiseptic. Now in the construction market there are many interesting offers that protect the material from 2 to 8 months. In the composition of such substances there are no components that can harm natural building materials.

There is a high probability that black spots may appear on the surface of the timber, which cannot be left. To eliminate them, modern bleaches are used, which contain chlorine or active oxygen. It is not recommended to buy cheap substances, it is better to take a more expensive one, from a trusted manufacturer, which is created in accordance with all quality standards.

It doesn’t matter what material the house is built from – over time, any structure is subject to wear and tear. Then repair is needed to prevent destruction. Inspection of buildings allows you to understand the degree of deterioration and whether the building needs reconstruction. Specialized organizations conduct an examination and issue final documents

Antiseptics

A simple and reliable way to extend the life of a tree is antiseptic chemicals, depending on the manufacturer and composition, they can be transparent or tinted.

Senezh

Substances from this manufacturer are used for:

  • full protection of the beam throughout the entire period of its operation;
  • protection from harmful substances and influences, as well as from fire;
  • final finishing of wooden walls;
  • removal of gray and black spots.

Neomid

To treat hard-to-reach places with an antiseptic, you can use a paint brush

Neomid products are represented by antiseptics (washable and non-washable) and transparent oil paints.

Belinka

Products are used to protect all tree species: from budget to elite. Protects from any harmful effects, preserves the natural color and texture of the building material.

Aquatex

Production takes place according to all modern standards, there are no harmful chemicals in the composition. The product is a paint and varnish product of different colors (including colorless), which contains antiseptic components. Easy to use, quickly sets to the wood without pretreatment with a primer.

Rogneda

An environmentally friendly product that will not harm the health of people and animals. Provides material protection up to 50 years.

It is better to grab the antiseptic with the surface if the walls are sanded before processing

They can process both fresh building materials and those that are already affected by harmful microorganisms to stop their spread and complete destruction.

Aqualor

Budget option in the Russian market. The antiseptics of this brand are based on water. Provides an acceptable level of protection. It is possible to apply material on wood only at positive temperature.

Tikkurila

A Finnish giant company that supplies paint and varnish products of various categories to the market. Tikkurila antiseptics protect timber from all kinds of harmful effects, extending its service life up to 70 years.

Processing the ends of the timber

The ends are exposed to moisture many times more than the rest of the surface of the material. Without proper end protection, soon after construction is completed, the strength of the entire structure will be minimal. Protective impregnations form a protective layer on the ends, which reduces the penetration of moisture and normalizes the rate of evaporation.

To process the walls of the bath from the outside, you can use simple antiseptics, but for internal processing you will need specific tools.

The processing of this part of the timber is very important, it will reduce the cracking of the building material. Such processing is carried out both outside and inside the house. You can apply the impregnation with any painting tool: brush, roller or spray.

If the budget is limited, you can buy an oil-wax antiseptic, as it is better absorbed, which leads to lower consumption. Damaged ends are recommended to be protected with a deep penetrating agent.

Fire protection

Wood is flammable, so it must be protected from the effects of fire. Most modern antiseptics include in their compositions components that protect the tree from fire. If there are no such substances in antiseptics, you need to use antiperine.

Experts recommend providing the first group of protection against ignition, since the second may prove to be ineffective. To do this, apply 1-3 layers of the substance more than indicated in the instructions from the manufacturer. When choosing a solution, be vigilant: some compounds with any number of applied layers will provide only the second group of protection.

For the processing of load-bearing structures, it is necessary to use compositions that change the color of the building material. This allows you to clearly see the degree of security of the desired structures. Before the applied layers are completely dry, it is imperative to protect the surface from drafts and moisture.

Protection against fungus and mold

Specialists apply protective substances in one of three ways:

  • smooth immersion of the material in the antiseptic;
  • processing with a paint brush;
  • spray treatment.

Lining walls can be painted after applying an antiseptic to extend its service life

Protection against fungus and mold allows you to extend the life of the tree up to 45 years. When buying an antiseptic, it is recommended to pay attention to complex compounds that protect natural material from all sorts of harmful effects.

Woodworm protection

Elimination of black spots

  • with chlorine. Aggressive chemicals that remove not only stains from fungus and mold, but also resinous and tannins that contribute to the deformation of the wood structure. Such bleach can only be applied using gloves and a respirator;
  • with active oxygen. Mild chemical. Weakly affects the structure of the beam, does not penetrate deep into. During the application of this bleach, gases that can harm human health are not released.

For better adhesion of the antiseptic to the surface, it is recommended to pre-grind the walls

Processing the walls of a wooden house is an important process. Such protective measures will protect the natural building material and extend its service life by several decades. We recommend doing the procedures even before building a house or cottage.

If time was lost in the early stages of construction, and wood damage has already begun, do not despair. It is required to quickly carry out all the necessary work to get rid of the harmful effects on the wood structure and protect it from repeated damage in the future.

Based on statistics, country houses are mostly built from wood, despite the existing large range of other building materials. From logs in a short time you can build a beautiful and comfortable house of any size and shape. But do not forget that natural wooden material is subject to various destructive influences from biological agents and nature itself, which it alone cannot resist. And to protect the logs, it is necessary to carry out phased processing using chemical protective impregnations, which will significantly extend the life of the log house.

A photo: log cabins require protective treatment with impregnations, flame retardants and antiseptics.

Expert opinions

Processing a log cabin should be done in the following order:

  1. An important and first step in the processing of a log house is to clean the crowns. Their surface should be carefully sanded, freed from debris, dust, because. they can prevent the penetration of the protective composition into the structure of the wooden material
  2. Then, the logs are treated with an effective, high-quality antiseptic composition that can protect the material from the formation of biological agents and insects. Apply the product to the wooden surface at least 3 times, allowing each previous layer to dry thoroughly.
  3. The next stage of processing is carried out using flame retardants. They need to be applied to the walls of the log house inside and out in several layers. Depending on the composition used, the wooden surface will become non-flammable (acquiring 1 fire resistance group), or hardly flammable (acquiring 2 fire resistance group), i.e. the material may ignite, but the fire cannot be sustained and propagated. In the event of a fire, a wooden frame treated with flame retardants will turn black, the protective layer of fire retardant impregnation on the surface of the logs will be charred, but it will not burn. Such wooden material is easier to restore than a completely burnt structure.
  4. Then the log structure must be treated with water-repellent compounds. Wooden material absorbs moisture well and retains it.
    and from excessive moisture, the logs begin to deform, cracks form on their surface and, most importantly, there are great chances for the formation and further dangerous development of putrefactive processes. Particular attention during processing should be paid to the ends, through their open longitudinal fibers, moisture is absorbed more easily and in large quantities. Apply a water-repellent composition to the end of the log should be at least 4 times.
  5. The next stage of processing is the application of a primer. This, in fact, is the final protection of the material from biological troubles. The primer composition penetrates well into the wooden material and eliminates all cracks in the structure. Its main purpose is to ensure good adhesion of paints and varnishes to wood.
  6. The final stage in the processing of a wooden frame is the transformation of its appearance. For this, there are special paints, varnishes, etc. Compounds with a bleaching effect are often used to eliminate the darkening of wood.

Complete processing of a log cabin should be done after the wooden walls have dried. Until this time, you can use gentle, so to speak, temporary antiseptics with a short duration. They are washed out with water over time and after a few years their protective effect is greatly reduced. But for the first time, such funds are capable of protecting the structure and residents from mold fungi. These pests not only reduce the performance of the wooden material, but also harm the health of the residents of the log house. Suddenly, respiratory problems (laryngitis, tracheitis, and even asthma) can begin, allergic diseases often occur.

Why are the stages in the processing of a log house important?

Any stage of processing should not be neglected, otherwise, as a result of construction, it will not be possible to build a beautiful, durable and safe log house. To apply protective compounds, use hard brushes with synthetic bristles, natural bristles may suffer during application. Brush movements should be clear and hard, as if rubbing the impregnation into the material, only then the logs will be reliably processed.

On sale there are protective means for processing a log house of domestic and foreign production. They have no special differences. For example, our protective compositions of the Neomid and Prosept companies intended for wooden housing construction are not inferior in quality to foreign imported compositions. After all, the same components, identical modern equipment and technology are used to create them.

Before implementation, specialists conduct a lot of tests, strictly controlling the compliance with the declared properties with the real ones. But at the same time, the cost for them is several times lower, because. there are no costs for the export of funds to Russia.

Separation of funds by purpose

There are narrow-purpose tools aimed at combating specifically mold, rot, or insects. But there are also complex compositions capable of providing protection against several types of pests at once.

A photo: Bio-protective composition of the highest quality Neomid Super Proff 001.

For example, flame retardants of the same companies Procept Firebio Prof and Firebio Prof-1, Neomid 450 and 450-1, they cope with biological pests, and at the same time prevent the ignition of wooden material.

A photo: Fire bioprotective composition of the highest quality Neomid 450-1. It is recommended to use it for floor beams and for processing a wooden truss system of a house of any design.

But it is undesirable to use only this composition. It is better to treat the log house separately with antiseptics and fire retardants separately, so the protection period will be longer, about 20 years. And complex products provide biosecurity for an average of 5-7 years, so saving on formulations is not recommended.

Good antiseptics and reliable antiseptics are Neomid 400, 440 eco, 430 eco, Procept Interior, Exterior and Universal. Each of these compounds should be used strictly for their intended purpose (indoors or outdoors). Indelible antiseptics can be used to treat the lower rims, terraces, gazebos and other structures that are outdoors and are subject to constant negative effects. Their composition is the most powerful and strong.

Wood due to its natural purity, availability, numerous advantages in terms of ease of processing and good operational qualities, from time immemorial is one of the main materials in the field of construction. However, it also has its drawbacks, which can lead to a decrease in the durability of both individual parts and the entire building as a whole. The main "minus" can be considered the low resistance of most wood species to biological damage. The tree undergoes natural decomposition, is a good breeding ground for various forms of microflora and for many insects. In order to avoid rapid damage to the material, to maximize the durability of wooden parts and structures, lumber must be processed in advance with special means, and then, if necessary, the finished structure must also be processed.

Manufacturers offer for this purpose a wide range of solutions made on various bases - it is not so easy to figure it out from a "swoop". Therefore, consumers often have a question - which wood preservative is better to choose? To determine which protective compounds exist, and which of them are used in a particular case, it makes sense to consider them in more detail.

General classification of antiseptics for wood processing

Antiseptics can be divided into types according to several criteria - this is according to the components on the basis of which they are made, according to the scope of the compositions, and according to their functionality.

  • So, antiseptic impregnations are basically divided into aqueous, oily, organic and combined solutions.

A few words should be said about their characteristics:


- Water-based antiseptics are used for protective impregnation of wood of any species. For their manufacture, components such as sodium fluoride, sodium silicon fluoride, as well as borax and boric acid (BBK3) are used. Water-soluble compounds are most often used to impregnate wooden surfaces, which in the future will not be exposed to intense moisture.

- Oil antiseptics can be called the most popular, as they are able to protect wood from high humidity and the penetration of moisture into the fiber structure of the material. When applying an oil-based solution to the wooden elements of the building, they acquire one of the rich dark shades.

This impregnation option does not dissolve in water, since it is based on shale, anthracene or coal oil. It must be remembered that oil antiseptics do not protect wood from rapid ignition, that is, they are not flame retardants. They have a very sharp specific smell, so they are most often used to impregnate the external surfaces of the building.


- Organic solutions most often used for impregnation of facade surfaces. As a rule, they are used in cases where wooden walls are planned to be painted, as they create a thin film on the surface, which reduces moisture absorption wood and increases the adhesion of coatings.

Prices for Pinotex antiseptics

Antiseptic for wood Pinotex

However, it must be said that they are also suitable for processing internal wooden surfaces, so they can be used for pre-treatment of timber or logs from which walls will be built.

Organic solutions give the wood a greenish tint and increase the porosity of the structure. In addition, they can negatively affect the metal elements that are fixed on the facade and will be in contact with its surfaces, so the chemical composition can contribute to the activation of corrosion processes.


  • According to the field of application, antiseptics can be divided into solutions intended for external and internal works, for dry and damp rooms.

- Solutions for external works. This category includes antiseptics for preparatory and decorative work, which are highly resistant to aggressive environmental influences, such as ultraviolet radiation, high humidity, freezing, sharp temperature changes with a pronouncedly large amplitude. Due to the fact that the compositions very often have a sharp unpleasant odor, they are not recommended for use on internal surfaces.

- Antiseptics for interior work. These solutions are made from environmentally friendly components, they do not have unpleasant odors and do not emit toxic fumes into the environment. At the same time, it must be remembered that for the premises of a house or apartment with different levels of humidity, different antiseptics will also be required. Manufacturers always place information about their specific purpose on the packaging.

  • In addition, antiseptics are divided into therapeutic and prophylactic solutions:

- Therapeutic compositions are used in cases where the wood is already affected by fungus, mold, rot or insects. However, this version of the solutions can also be used for preventive work. Especially in cases where it is planned to operate wooden structures in an aggressive environment, for example, in bath rooms or bathrooms (showers). They are also suitable for preventive treatment of facade surfaces.

- Prophylactic solutions- the most common. It is clear that they are used, as a rule, for the processing of lumber before the start of construction or during its implementation. And it is recommended to impregnate wood immediately after its acquisition.

Antiseptics can be colorless, that is not altering the natural a shade of wood, or pigmented, giving surfaces a certain shade. That is, many compositions can be used both for a primer preparatory layer for painting or other finishing, and as an independent tinting decorative coating.

Classification of protective compositions for wood by functionality

Antiseptics are also divided according to their functional effects on wood. There can be many reasons for the "start" of the processes of biological damage to a tree - this is the lack of proper ventilation, timely processing with appropriate compounds, improper storage of lumber before the construction of the building, poor-quality insulation of the building, exposure to moisture on the surface, and more. In addition, many compositions also have a directed action - for example, restoring the normal color of wood or giving the material a higher resistance to fire.

Whitening antiseptics

To provide protection and at the same time restore the original color of the formed or affected wood, “rejuvenate” it, special bleaching antiseptic solutions are used. The most popular of them include the following.

  • "Bioshield 1" and "Bioshield 2" - these impregnations are designed to prevent surface putrefactive processes occurring in wood under the destructive influence of pathogenic microflora. In addition, they are able to preserve the physical and technical characteristics of the processed material, as well as restore the healthy natural color of unpainted wood.

If wood damage is at an early stage, then Bioshield 1 can be used. After the treated surfaces have dried, they can be painted or finished with other decorative materials.

In case of severe damage to the tree by mold or lichen, it is necessary to use the "Bioshield 2" tool.

Both of these compositions are well suited for processing wood used in the construction of log cabins for baths and houses.


  • "Procept 50" is a domestically produced whitening antiseptic "medical" agent for wood. The composition perfectly removes the foci of biological damage, including gray plaque, restoring the healthy color of the tree, literally in 25-30 minutes, while maintaining its structural structure.

The penetration depth of this composition is 3 mm. And already 12 hours after applying the antiseptic to the wood, it can be painted or pasted over with insulating material or wallpaper.

"Procept 50" is an environmentally friendly solution, so it can be used for both external and internal processing of wooden surfaces. In addition, even wooden pallets are processed with it, on which food products are transported and stored.

Prices for wood bleach Prosept 50

Wood bleach Prosept 50

In order to keep the solution as long as possible in the structure of the material, it is recommended to additionally cover the surfaces with a preservative antiseptic "Neomid 430 eco" or "Neomid 440 eco". These funds will exclude the possibility of recurrence of the occurrence of foci of biological damage.

  • "Neomid 500" - this whitening antiseptic is similar in its characteristics to the previous remedy. However, its cost is much higher, so it is not so popular among builders.

The solution is an environmentally friendly product and can be used for internal impregnation of wooden surfaces. The tool is most often used by professional builders for processing wooden log cabins of bath houses and residential buildings. Its drying time after application is 24 hours.


  • Sagus whitening antiseptics are water-based. They are designed to radically remove any kind of damage caused by black mold and wood staining fungus from unpainted wood. Solutions are also used to impregnate logs and timber for the construction of baths and houses.

Sagus produces three types of whitening compounds - Standard, Profi and Light :

- "Standard" is a solution of deep and fast penetration into the structural structure of wood fibers. It is used at the first manifestations of mold, the appearance of lichen or moss, as well as the darkening of the material as a result of exposure to ultraviolet radiation.

- "Profi" is a composition that is able to cope with more serious damage to wood. In addition, it is suitable for impregnating surfaces built from mineral building materials (brick, gas silicate blocks, etc.).

The tree is a favorable environment for the emergence and development of colonies of fungus and mold. The risk of their occurrence is especially great if the wood is constantly exposed to moisture. When a lesion appears, getting rid of it is not easy, since it penetrates the structure of the wood fibers, destroying their integrity.

To prevent this process, a protective composition is used that prevents or stops the growth of fungal colonies. If microorganisms have captured large areas of wooden surfaces, then antiseptics should be used only after therapeutic measures, which are carried out using special agents - fungicides.

In addition to protecting against such lesions, this type of product is able to scare away insects harmful to wood, which can turn it into dust in a very short time. It should be noted that there are a lot of varieties of tree beetles. But if preventive measures are taken in time, none of them will be terrible for wooden products.

Below we will consider the most popular of protective antiseptics from various manufacturers.


  • Senezh is a domestic manufacturer that supplies the construction market with excellent woodworking compounds. A wide range of such products is offered, for wooden parts in any area of ​​the building and with various functionalities, including a purely protective antiseptic effect.

Such means include the Senezh Bio solution, which is able to fix the natural protective qualities of wood. The compositions are made on a water basis, they impregnate the wood structure well, forming a three-level protective threshold. Fully suitable for both external and internal surfaces of the building.

In addition to solutions that make the material resistant to mold and wood bugs, this manufacturer makes compounds that make wood more resistant to fire, high moisture and ultraviolet rays.


  • "PAF-LST" is an antiseptic water-soluble paste of domestic production, made on the basis of fluorine and lignosulfate. The manufacturer promises that the tool is able to increase the operational life of wood up to 30 years or more.

The paste is intended for processing wood used for the construction of load-bearing and enclosing structures. Moreover, even raw wood can be processed. The drug is odorless, and when applied, it stains the wood in a dark pistachio color, creating a rough layer on its surface. This version of the antiseptic is selected if the elements processed by it are not planned to be painted.

- "Homeenpoisto +" - these are special tablets that are used to prepare a solution to remove mold foci and prevent their formation. The composition can be used for the treatment of old and new, external and internal, wooden or mineral surfaces.

The treatment process with this substance is carried out before staining. The tablets are dissolved in ordinary water, and then the resulting solution is applied to the surface with a spray gun. The tool is given a certain period for a more intense effect on the affected areas of the material. Then the surface is treated with a brush or foam sponge, after which it is washed with clean water and dried. After drying, the surface must be painted immediately.

- "Homeenpoisto 1" is an antiseptic jelly-like agent designed to remove lesions from wooden surfaces and further protect parts from recurrent processes. The solution is made on the basis of hypochlorite, so it is intended for external use only.


    A high-quality and reliable antiseptic "MOKKE" is offered by the Russian manufacturer of coatings-color. Means is intended for processing of wooden facades and other external surfaces. The reliable composition of the antiseptic guarantees effective protection of wood from decay, damage by fungus, lichens, and various insects for up to 45 years.

Flame retardants - fire retardant solutions

Due to the fact that wood is a highly flammable material, it requires a special fire retardant treatment that will increase the resistance of lumber to fire. Compositions for these purposes are called flame retardants, and they are produced in liquid, paste and powder forms.

  • Impregnations are aqueous solutions intended for deep penetration into the wood structure.
  • Lacquers form a protective transparent and thin film on the surface, which will protect the wood from rapid heating and ignition.
  • Paints and enamels perform two functions at once - it is protective and decorative.
  • Coatings are paste-like compositions that are not decorative, they are intended only to protect surfaces from open fire.
  • Powdered flame retardants are applied to surfaces using special equipment by spraying.

Flame retardants are also divided into compositions for surface treatment and deep penetration into the wood structure, as well as solutions for outdoor and indoor use. Used for facades weather resistant compositions, and for the interior - environmentally friendly and resistant to aggressive environment solutions, especially if wooden surfaces are impregnated in baths or bathrooms.

Another important distinctive feature flame retardants is their principle of action, which can be active or passive.

  • Active substances are called substances that, when heated, emit non-combustible gases that prevent the access of oxygen to the combustion source. Thus, the possibility of flame propagation is reduced.
  • Passive fire retardants are solutions that form a layer when the wood surface is heated, which protects the wood structure when exposed to fire. The compositions have the ability to melt at high temperatures, creating a non-combustible "crust", which, by the way, wastes a lot of thermal energy, which increases the overall thermal stability of the wooden structure.

Flame retardants include in their range manufactured by the same companies that produce other wood protection products.


  • Compositions "Senezh Ognebio" and "Ognebio Prof" are intended to increase the resistance of wood to open fire and protection against biological damage. These preparations are used to treat exterior walls before painting them. If the protective layers formed by such fire retardants are left uncoated, the substances will quickly weather.
  • "Neomid 450" and "Neomid 450-1" are highly effective solutions for protecting wood from biological damage and fire. They are used for application on external and internal surfaces that have been machined, but unpainted and not impregnated. film-forming formulations. If fungal infections are found on the surfaces, then they should be treated with bleaching agents before applying the fire retardant.

  • "Pirilax" is a bio - and fire retardant solution designed to impregnate wood and materials made from it, which can be used for outdoor and indoor work. The composition perfectly protects the tree from wood-staining and mold fungus, wood-boring beetles. And besides this, it enhances its resistance to open fire. In general, thanks to this treatment, the service life of any wooden parts is extended, the risk of cracking is reduced, and decay is slowed down.

The composition is compatible with other paint and varnish solutions, therefore it can be used for coloring. The manufacturer of Pirilax indicates on the packaging that it provides antiseptic protection for wood for up to 20 years, and fire protection for up to 16 years. At the same time, the composition is an environmentally friendly material, safe for people and the environment.

On sale you can find flame retardants and other domestic and foreign manufacturers. When purchasing any of them, it is recommended to carefully study the characteristics of the solution and instructions for its use.

Compounds providing UV protection

Structures built of wood lose their attractive original appearance over time, as they are constantly exposed to damaging ultraviolet radiation. To protect the facades of wooden houses or baths, it is necessary to treat surfaces in time with preparations specially designed for this purpose.

Protective products, which are designed to prevent the harmful effects of sunlight, contain pigments and special additives that reduce the destructive effect of ultraviolet radiation.

A wooden surface treated with a special agent will be protected from UV damage for 8-10 years, after which the treatment will need to be renewed. If a colorless version of the solution is chosen for the coating, then the coating will have to be renewed every 3-4 years.

If blue or mold damage is found on the lumber, then before coating them with protective compounds must be treated with strong antiseptics.

The following compositions can be cited as an example of this type of funds.


  • "Senezh Aquadecor" is a decorative composition, which is not only an excellent antiseptic, but also includes special components - UV filters that absorb solar radiation. thanks to these ingredients. wood does not darken, retaining its original appearance. "Senezh Aquadecor" is produced in a wide range of colors, which allows you to choose the most suitable shade for coating external or internal surfaces.
  • « Biofa 2108" - This is a special solution made in Germany. The composition of this tool includes microparticles of white pigment, they are protection for wood from UV rays. The product can be used to coat interior and exterior wooden surfaces. When applying the solution to wood, the natural color of the material does not change.

The composition is made on the basis of linseed oil, which is well absorbed into the wood without creating a film on the surface. Due to the fact that the product is oil-based, it is not compatible with aqueous solutions. Biofa 2108 - it is an environmentally friendly product, so the coating from it is breathable and does not emit toxic fumes into the environment.

Protective solutions for wood operated in a humid environment

Parts of wooden structures in contact with the ground, buildings located in regions with traditionally high humidity, as well as internal wooden surfaces of baths and saunas require the use of products specially designed for their treatment.

The oil is quickly absorbed into the structure of the wood, emphasizing the beauty of its texture. In addition to oil, the composition of the product includes a special wax, which is a water-repellent component.

Wax does not exfoliate from the surface, increases the wear resistance of wood, gives it hydrophobicity, and also prevents mechanical damage. The manufacturer has provided the possibility of tinting the product, the color scheme for which has 39 shades.

To protect surfaces in baths and saunas, special compositions are also provided, designed for exposure to high temperatures, steam and moisture. Therefore, if it is necessary to treat surfaces in these buildings or separate rooms, it is worth choosing products whose packaging indicates their specification:


  • "KRASULA® for baths and saunas" is a decorative and protective solution containing natural wax in its composition, used to treat both dry and wet surfaces. The function of this tool lies in its following actions:

- protection of wood from the penetration of moisture, dirt, soot, grease, soapy water, as well as from the formation of stains from adhering leaves;

– destruction of the wood lesions caused by mold, algae and prevention of recurrence;

- protection against damage by harmful insects, such as wood-boring beetles;

The product has been tested for safety operation at high temperatures. It does not change the natural appearance of wood and retains its natural aroma. It is important that the composition does not clog the pores of the material, allowing it to "breathe".

It is especially important for the conditions of the bath that it is an environmentally friendly solution safe for the environment and people. It is convenient that it is possible to carry out processing in a humid environment, without waiting for the surfaces to dry.

The manufacturer gives a guarantee for the protection of wood for a period of 7 years in the rest rooms of baths and saunas, as well as 5 years for the surfaces of washing and steam rooms.


  • "PROSEPT SAUNA" - a composition that is a composition of synthetic biocides, made on a water basis. It is used to protect the internal wooden surfaces of baths and saunas from wood-staining and wood-destroying manifestations. Prevents the appearance of colonies of fungus and pathogens on healthy wood. The solution provides reliable protection against moisture penetration into the wood structure at high temperatures.

PROSEPT SAUNA can be used not only to protect new surfaces, but also to stop existing destructive processes. The active components of the antiseptic quickly penetrate into the wood structure, binding to its fibers. Thus, a special resistance of the material to the penetration of moisture and washing out of the agent itself is created.

This tool is used as a base for surface treatment with oils intended for bath rooms, for painting or tinting.


  • "Senezh Sauna" is another solution designed for the treatment of wooden surfaces in rooms where high humidity and high temperatures prevail. The impregnation has an environmentally friendly composition that does not emit toxic substances into the environment.

Prices for antiseptics Senezh

Antiseptics Senezh

Preservatives for unbarked wood and wood with high natural moisture

If fresh wood is purchased for construction, not dried out, or a log that has not been peeled from the bark, then before laying the material to dry, it is necessary to process it. For this purpose, it is recommended to use specially designed products that will reliably protect the wood during its natural drying period.


The preparations used to impregnate such wood have the property of deep penetration into the structure of the material, allow it to "breathe" and create unacceptable conditions for the appearance of fungal formations and insect damage. Such solutions include Neomid 420 and Neomid 46, Senezh Insa and Senezh Trans, Prosept-42 and Prosept-46, Eurotrans, BS-13 and others.

Protection for the ends of timber and logs

A specific area of ​​lumber that requires enhanced protection is the end of a beam, board or log. Due to the fact that the butt has a more porous structural structure, moisture is intensively absorbed into the wood through it, penetrating into the depth of the products. As a result, in the created favorable microclimate, mold that destroys the material is easily formed. In addition, waterlogging in these places leads to the appearance of deep cracks, which sharply reduce the quality of the acquired material, becoming vulnerable to further wood damage. Therefore, for processing of this area of ​​wooden products were special antiseptic agents have been developed that are applied to the material being prepared for construction or sheathing, or to the ends of a log or beam of an already finished structure of a house or bath.


The most popular tool for protecting the ends of lumber is Senezh Tor, which has all the necessary qualities. And, the processing process must be carried out not only for new materials, but also for objects already put into operation, with a frequency of every three to four years.

Preservatives for old painted wood

It is more difficult to save painted wood from biological damage, since it is not at all easy to get rid of the old paintwork. And, even in cases where the coating has cracked and begun to flake off.

In order for the protective agent to show its effectiveness, all layers of paint will have to be removed from the wood. This process can be done in several ways - mechanically, using a spatula or grinder with a metal brush nozzle, and chemically, when special compounds are applied to the surface that soften and peel off the old layers of decorative finishes.


Antiseptics can be applied only after complete cleaning of the surface from paint layers.

Protective measures are carried out both before the subsequent painting of wooden surfaces, and when leaving the cleaned material in its natural form.

For the treatment of cleaned surfaces, antiseptics such as Valtti Techno and Homeenpoisto 1 are used, which are able to penetrate deeply into the structure of previously painted wood and protect it from problems that have arisen. If the surface is completely cleaned of old paint, if desired or necessary, it can be bleached to a natural color, at the same time making the necessary "treatment". The name and description of the whitening compositions have been provided above.

What to look for when choosing a wood preservative?

Regardless of the purpose for which an antiseptic is chosen, it is very important when choosing it to pay attention to some points that will determine the quality of the composition and the duration of its protective action.

  • Manufacturer. It must be correctly understood that protective compositions that meet all the established criteria can only be manufactured using high-tech specialized equipment, which is available exclusively from large profiled companies.

As a rule, such enterprises have been operating for decades and have already gained a certain prestige among consumers. Therefore, in order not to purchase a low-quality product that will not work properly, it is best to buy a well-known brand solution. Of course, you won’t be able to save on such products, but you can be sure that the protective qualities of the purchased solution will correspond to the description given by the manufacturer on the package.

  • Duration of effective protection. As established empirically, antiseptic protective coatings can operate effectively for no more than two to seven years, depending on their quality. That is, in any case, they will need to be updated over time.

If the manufacturer indicates a service life of 20 ÷ 40 years, then such a characteristic should hardly be unconditionally trusted. Any, without exception, even the highest quality protective agent under the influence of external factors gradually loses its original properties. In the characteristics presented above, the operating periods given by the manufacturer are indicated. However, when purchasing one or another version of an antiseptic, it is necessary to carefully study the packaging and find out the conditions under which such a period is possible.


  • Consumption of a protective composition. Many consumers immediately pay attention to the cost of an antiseptic and try to save money by buying a more affordable solution. However, it is necessary to look at the material consumption indicated by the manufacturer, since many of them, having a low cost, require a large consumption and application in two or even three layers. To be able to navigate this parameter, you need to know that the average varies from 200 to 250 g / m². Only flame retardants can have high consumption - here it can be 400 ÷ 600 g / m².

If large-scale work is planned, then it would probably be useful to immediately calculate how much antiseptic solution will be needed for the treatment. Calculate the consumption for any area (for example,) - usually does not cause problems. It is more difficult when you need to process lumber, timber or a board - in these matters, many begin to get confused.

To make this calculation as easy as possible, below is a calculator that will carry out the necessary calculations in just a few seconds.

Calculator for calculating the amount of antiseptic composition for processing lumber

The program will calculate the consumption of antiseptic for processing in one layer, taking into account the traditional stock of 10 percent. Important - the amount of the finished solution is calculated, since many formulations go on sale in the form of concentrates, which must be diluted before use in accordance with the manufacturer's instructions.

To simplify the task, the amount of lumber can be indicated both by the piece and by volume, that is, "cubes", as they are often purchased at the bases.

Consumption is indicated by manufacturers either in milliliters per m² or in grams - alas, but there is no unity on this issue. It's okay - the principle of calculation does not change in any way from this.