Fire protection for wood: description and reviews. Review of antiseptics for external wood treatment

How does fire bioprotection for wood work?

What is wood fire protection and how does it work? Fire and bioprotection is a general name for wood processing products of various compositions and principles of action, which can protect it from rapid fire, as well as damage from rot, fungi and insects.

Science today can do a lot, but, unfortunately, not everything. A means that completely protects wood from fire has not yet been invented. Treatment with fire-bioprotection only makes it more difficult to ignite and prevents harmful microorganisms from actively developing. Such products contain two main components - a fire retardant and an antiseptic.

Fire is the main enemy of wooden buildings, so fire bioprotection manufacturers focus their main efforts on the effectiveness of fire retardants - substances that impede the combustion process. In addition to fire retardants, the protective composition usually includes an antiseptic that protects wooden structures from rot, mold, insects. Today, there are formulations on sale that contain only fire retardants or only antiseptics, and there is a combined fire-bioprotection that includes both components.

There are several types of fire protection in Moscow; they may differ:

based on the principle of fire protection;
by method of application;
by breeding method;
according to the degree of effectiveness of fire protection;
by consumption per sq.m.;
by penetration depth;
by coloring ability.

Classification of fire-bioprotective compounds

Types based on the principle of fire protection

The action of a fire-bioprotective composition can be based on any of three fundamental physical processes:

melting of substances included in fire retardants, such as silicon salt, phosphoric or boric acid, to form a non-flammable protective substance;
decomposition of substances, accompanied by the release of gas (ammonia, sulfur dioxide), which displaces oxygen, which, in turn, complicates combustion;
swelling of the protective shell, leading to the fact that the contact of fire with the wooden surface becomes minimal (organophosphorus compounds).

Types of fire protection by method of application

Depending on how fire protection is applied to wood, there are:

impregnating compositions - act from the inside;
coating compositions - form a protective layer on the surface (pastes, varnishes, enamels, putties).

The main difference between them lies in the aesthetic qualities of the processed structures. After application, impregnating compounds do not change the smell and wood grain (sometimes even emphasize it), that is, the wood retains its natural appearance. Covering ones, on the contrary, greatly worsen appearance wood and differ unpleasant smell, therefore they are used for processing wooden load-bearing structures, which will then be hidden under the finishing.

Classification of fire protection according to dilution method

Fire-retardant compounds are divided into: water-soluble and organic-soluble. Water-soluble protection - compositions for the dissolution of which a water solution is used. They, in turn, are divided into two categories:

saline;
non-salt.

Salt fire protection is low in cost. And this is perhaps its only advantage. But there are enough disadvantages:

increased consumption and low degree of protection;
After applying the salt composition to the wood, it will no longer be possible to cover the structure with paint and varnish;
such fire-bioprotection is valid for no more than five years;
in case of overdose and non-compliance with recommendations, whitish stains appear on wooden surfaces.

In addition, the salt composition is easily washed out with water, and when high humidity its effectiveness decreases significantly, so such materials are used exclusively for interior work.

Non-salt fire protection is made on the basis of compounds of boric, carbonic or phosphoric acids and has the following advantages:

long period of action, which according to the “bio” parameter is 20 years, and according to the “fire” parameter - 15 years;
versatility of use - can be used both indoors and to protect outdoor wooden structures
structures treated with such compounds can be coated with varnish or paint;
non-toxic, safe for humans and animals.

The main disadvantage is the higher price of this type of fire protection. Although quality, practicality and long-lasting effect in this case completely compensate for the extra costs.

Organosoluble compositions are produced on the basis of solvents. After applying the composition, a durable, thin film is formed on wooden surfaces, which perfectly repels liquids and also effectively increases the thermal stability of lumber. The main disadvantage of such compositions is the toxicity of some of the components included in their composition, therefore their use inside buildings is strictly not recommended. In addition, some organosoluble remedies are “narrow profile”.

Efficiency of fire and bioprotection

Fire protection is also divided into several types according to the degree of effectiveness. When purchasing fire-bioprotective compounds, you should pay attention to the protective effectiveness group indicated on the product label. There are two of them - 1 and 2. Index 2 indicates that after treatment with this composition, wooden structures become difficult to ignite. If the task is to give the wood the properties of fire resistance (the maximum possible resistance to open flame), then fire bioprotection from the warehouse should be purchased with the marking “1”.

It should be noted that the number of layers can change the degree of protection. For example, by applying 6 layers of a weaker composition of group 2, you can obtain a level of resistance of group 1. And vice versa, after applying just one layer of protection of the 1st group, you will get a 2nd level of fire resistance.

Penetration depth, flow rate

Composition consumption per sq.m is an important economic indicator that should be paid to special attention upon purchase. You should look not only at the cost for a specific packaging, but also estimate required quantity in terms of per square meter of treated area. For example, inexpensive salt formulations have a consumption 2-3 times higher than relatively expensive non-salt products - as a result, the apparent savings are reduced to zero.

Based on the depth of absorption, there are two categories of fire protection:

capillary (surface) compositions - penetrate into the fibers no deeper than 6 mm;
deep penetration compounds are capable of saturating wood to 12 mm or more.

It is more profitable to use surface fire protection, since it can be easily applied to structures with any available painting tool (brush, roller, spray gun). Such compositions in wood internal stresses do not create, which means the strength of the material does not decrease. Deep penetration protection (in most cases salt type) requires application special equipment, therefore, this type of fire-bioprotection is rarely purchased wholesale and retail.

Some features of using fire bioprotection

In order for the composition to protect the wood to the maximum after application, the surfaces should be thoroughly cleaned of dust, dirt, various spots paints or oils.

Fire bioprotection should be applied to structures only after they have been finished by planing or sanding; the moisture content of the wood should not exceed 30 percent.

Surfaces should be coated with the composition when positive temperature, since in cold weather water freezes in the capillaries of wood, which prevents the penetration of fire and bioprotection.

Also, work should not be carried out in high humidity or in the rain.

Purchase of fire protection

What should you pay attention to when purchasing fire protection? In this case, it is very important that such a criterion as the cost of fire bioprotection should not play a role when choosing a composition main role. The main points that the consumer should pay attention to are:

specifics of application according to the certificate available from the seller (external or internal work, possible toxicity);
product consumption per square meter;
depth of impregnation;
application technique;
fire safety group;
duration of fire bioprotection;
the ability of the composition (and how much) to change the shade of wood.

Currently available for sale large selection fire and biological protection products from both Russian and foreign manufacturers. Practice shows that Russian compounds are absolutely no worse, and their price is significantly lower. Regardless of which composition you choose, you should understand and correctly decipher the letter code on the packaging.

"B" - composition contains boric acid, increasing its fire retardant properties;
“D” - with direct fire, a film is formed on the surface of the wood, slowing down the combustion process;
“M” - the composition of fire and bioprotection includes copper sulfate, which protects structures not only from ignition, but also from mold and mildew;
“C” - the product contains calcium-enriched soda, which is considered one of the best protection against fire;
"F" - contains sodium fluoride ( toxic substance), protecting the tree from fungus and insects - when working, you should use a respirator and thick rubber gloves;
“X” is a fairly poisonous compound used against wood borers and bark beetles;
"HA" - the composition emits a gas that envelops the fire and contributes to its extinction.

It should be understood that each fire protection means is characterized by a different specialization, and their effectiveness in relation to various problems is not the same. Drugs can be especially effective either in the “fire” or in the “bio” direction. Practice shows that it is best to use complex processing so that the products complement each other organically.

Treatment of any type of wooden building involves the use of antiseptics. However, before starting such manipulations, you should choose the best type so that the wood will last for as long as possible. It is worth taking advantage of the experience of professionals and paying attention to the fact that they try to use not too expensive products that are ready to demonstrate high efficiency. It is important to determine what functions a deep penetration antiseptic for wood should perform. This is due to the fact that universal remedies are not so effective, so you need to use targeted formulations.

Substances for protection against fungi

Fungal formations begin to appear in wood that is used in a humid environment. The material soon becomes covered in controversy. Experts advise in this case to use one of two products, among which are the antiseptic brand PAF-LST, as well as Homeenpoisto-1. You can purchase them on the market for relevant goods for an average of 110 rubles per liter. You can also create an antiseptic for wood yourself. Such substances are highly effective and consist of a mixture of waste machine oil and copper sulfate. In some cases, fumigation of the room with sulfur is used, but this approach cannot be called safe.

Bioprotection of wood under special conditions

If there is a need to protect wood from exposure to precipitation or soil, then it is best to resort to an Ultra brand antiseptic, which has many positive reviews. The most famous is the one called "Valtti Aquacolor".

This deep penetration impregnation creates a special protective layer on the surface. It can be used in the construction of a house based on laminated veneer lumber. This substance is applied to a previously cleaned and dried surface. It is important to apply about three layers. The drying time of the previous one before applying the next one is about 7 hours. As for complete drying, it will be achieved 12 hours after application. Before purchasing this impregnation, you must take into account that its consumption will be 1 liter per 10 square meters. You can purchase this antiseptic in containers whose volume varies from 0.5 to 50 liters. The cost starts from 70 rubles.

Antiseptic for wood with natural moisture

If you choose best antiseptic for a tree that has natural humidity, then you can use substances characterized by a non-washable structure. After it penetrates inside the lumber, the latter will change its original color to light greenish. According to reviews, the best remedy with a similar effect is what is produced under the brand name "Finesta". In stores building materials such a product is presented in containers whose volume can vary from 10 to 200 liters. For 10 liters you will have to pay approximately 250 rubles.

Antiseptic for unbarked wood

Seasoned wood is round wood from which the bark has not been previously removed. It can be purchased directly from sawmills, and the cost of such material will be significantly less compared to finished logs. It is recommended to store this material in a dry and well-ventilated area. However, not everyone can afford to have warehouses. For storage, you can use a special-purpose antiseptic. If we consider the rating of reviews, then the most affordable and economical product is the brand “Neomid 420”. You will have to pay 100 rubles or more for it.

Primer antiseptics

External wood antiseptic can also be made using a primer. In this case, the surface after treatment can be coated with paint or varnish. They are not particularly preferred by professionals for the reason that they do not have such a significant service life. Moreover, if the pre-primed surface is left without a finishing coat for a period exceeding 7 days, the substance will be washed off by precipitation.

Among the primers, the most positive reviews You can read about Pinotex Base and Valtti Pohjuste. Buyers point out the evenness of application, quick drying and excellent adhesion to the surface. Paint and varnish substances on such a primer do not peel off after 1-2 years, and you can choose a product from a wide range. The cost of primer antiseptics is 110 rubles and more.

Colored bioprotective antiseptic

If you decide to choose Senezh deep penetration wood antiseptics, then you may prefer a tinted type substance that allows you to achieve an even color. When choosing the best composition, you need to pay attention to the skills and abilities of the master. After all, when applying varnish, it will be quite difficult to achieve an even layer, and in the end you can get a “camouflage” color. This effect can be avoided by using a tinting antiseptic, which is coated with a clear varnish on top.

Almost any antiseptic can be tinted, but the one produced under the Pinotex Classic brand has proven to be better. Using the tinting method it is possible to achieve one of 50 shades. You will have to pay approximately 150 rubles per liter for such coverage.

Bioprotective antiseptic with ultraviolet filter

Deep penetration can also perfectly protect against ultraviolet rays, which can harm the material. Among other things, paint on walls without such protection will soon fade and lose its characteristics. Among the most common are “Neomid Bio Color”. These compositions also differ in that they can be tinted in order to give the surface a tint. The walls will not be afraid of not only the sun, but also microorganisms. You can purchase such compositions for 170 rubles per liter, but you no longer need to apply an additional bioantiseptic.

Antiseptics for open areas

If you choose a deep penetration antiseptic for wood that is used outdoors, then you should choose a composition with the appropriate qualities. Thus, for open areas such as terraces, you can use compositions that are resistant to washout and can withstand temperature changes. Most good decisions: "Pinotex Terrace" and also "Pinotex Natural". You can purchase them at a higher price, which starts at 350 rubles. However, you can count on superior quality and durability, which come first in this case.

Antiseptic for old wood

A deep penetration antiseptic for wood can also be intended for material that has already been painted and/or has been in use for a certain time. According to reviews, such substances are not so effective; only protective film. Experts advise initially ridding the base of old paint and only then begin processing.

Consumers who do not want to spend money and time purchase Valtti Techno. The composition will be able to extend the life of the building, but treatment will need to be carried out every year. The cost of the composition will be approximately equal to the above amounts, that is, 110 rubles per liter.

Wood bleaching

A deep penetration antiseptic for wood is often used to prevent changes in the natural color of the material. Such products should be applied with a brush to a specific location. After 2 hours, the surface brightens, regaining its original shade. If necessary, the procedure can be repeated about 3 times. If you decide to take advantage of the most effective means, then it is recommended to purchase “Neomid 500”, which costs approximately 170 rubles per liter on the building materials market.

If you decide to prepare deep penetration antiseptics for wood with your own hands, then instead of what was described above, you can use traditional whiteness. However, you need to be prepared for a strong smell.

Antiseptics for saunas

Baths and saunas also require treatment. But under such conditions, wood is unnecessarily exposed to moisture and temperature. That is why the above compositions cannot be used here. It is not recommended to use substances that have a pungent odor. You can buy the product "Senezh Sauna", which has a colorless structure and perfectly whitens walls. After penetration, the substance creates a protective layer. And you can purchase the composition for 270 rubles.

End protection

Neomid, which belongs to the group “Antiseptics for deep penetration wood,” is widely distributed on the market among consumers today. It is often used when it is necessary to protect the ends, which are the most accessible places for moisture. If you treat the ends, then the entire building does not need to be treated. The areas to be protected must be carefully sanded or tapped with a rubber hammer, then the technician can apply a special sealant. Consumers who value good value for money choose Senezh Tor, the price of which starts from 290 rubles. Despite the significant cost, the consumption of the composition is quite small, it is 1 liter per 15 square meters.

Fire retardant treatment

If, in addition to biosecurity, you need to protect wood from fire, then you need to choose a composition with the appropriate functions. Such substances can be divided into 2 groups, the first of which is distinguished by the most impressive resistance to fire. This product is suitable for homes with stove heating, as well as saunas for private and commercial purposes, which is relevant in both cases.

A necessary measure when using wooden building materials and structures. This is due to the fact that wood, more than other materials, is susceptible to the destructive effects of fire and biological pests. Professional fire-bioprotective wood treatment increases the durability of wood structures, preserves their appearance and protects them from fire, mold and destruction by insects.

Fire-bioprotection should be understood as the treatment of wooden structures and wood-based building materials with fire-bioprotective impregnations. High-quality and modern impregnation includes two active components - fire retardant and antiseptic. A fire retardant increases the fire resistance of structures and prevents wood from burning, and a wood antiseptic protects against the effects of biological pests. Let's take a closer look at the operating principle of these main components of the fire-retardant composition.

Fire retardants for wood - reliable protection against fire.

Fire retardants- substances that reduce and slow down the flammability of materials of organic origin, including wood. To understand how a fire retardant protects wood from fire, let’s remember the mechanism of wood combustion.

Under the influence of a flame, the moisture contained in the wood evaporates on a wood surface untreated with a fire retardant, and then flammable gases are released, which ignite upon contact with oxygen. In this regard, wood not only catches fire easily, but also supports combustion, increasing the area of the fire.

Fire retardants included in the fire-bioprotective impregnations of NPO Stroyzashchita work in two directions, protecting the wooden structure from the outside and from the inside. In the event of a fire, on the surface of wood treated with fire-bioprotective impregnation, non-toxic and non-flammable gases are released, cooling the wood from the inside, and a persistent film is formed from the charred components of the impregnation, blocking the flow of oxygen and preventing the maintenance of combustion.

Fire retardants have 1 or 2 groups of fire retardant efficiency, according to GOST R 53292-2009 “Fire retardant compositions and substances for wood and materials based on it. General requirements. Test methods". Group 2 flame retardants only prevent fire, while group 1 impregnations effectively protect wood at all stages of fire development.

When choosing a fire retardant, you should take into account both the effectiveness group and combustion characteristics wood material. For example, coniferous wood burns several times faster than oak boards.

Untreated under standard conditions fire retardant composition wooden structures collapse within 15-20 minutes. after the fire started. Structures impregnated with fire retardant retain their strength much longer, allowing people to be evacuated from the scene of a fire and property to be saved from fire.

Antiseptic for wood - protection against the harmful effects of microorganisms.

In addition to fire protection, wood should be protected from the destructive effects of mold, fungi and insects. For bioprotection, wood is treated with an antiseptic. Antiseptics - chemicals, preventing the destruction of the material under the influence of biological pests.

Microorganisms are capable of as soon as possible destroy the wood. Wood affected by fungi, and along with it structures made from it, lose mechanical strength and are not able to withstand the design load.

In a poorly ventilated area with high humidity mold forms. Mold does not affect the mechanical properties of wood, but increases the rate of water absorption, creating favorable conditions for fungal development.

Insects pose a great danger. By gnawing passages in the wood, they destroy the material. Wood loses its mechanical properties and rots.

Treating wood with an antiseptic protects the material from destructive biological factors. When choosing an antiseptic, you should pay attention to the expiration date and composition of the product. Phenol, arsenic and chromium pose a threat to human health.

Wood is one of the most popular construction and finishing materials. A house built of wood creates an excellent microclimate with optimal humidity: it is warm in winter and cool in summer. This material has a small disadvantage - without necessary protection it will become covered with fungus and mold, which will make it unsuitable for performing its functions.

Every construction industry specialist will tell you that to protect wooden buildings you need to use special antiseptics, which contain special substances that protect wood from fungus and mold. To see this for yourself, you can read reviews on the Internet about how to protect a wooden surface.

Types of antiseptics

Before choosing one or another material for protection wooden surface, you need to find out what types of these products are found on the market. In general, an antiseptic is a water-repellent composition that does not allow microorganisms that feed on wood to gain a foothold in the environment of this building material.

There are three main groups of this material:

Water-soluble compounds - used for preventive protection of buildings that do not have direct contact with high humidity;
Solvent-based compounds are a universal material that protects wood both indoors and outdoors. After it dries, a dense film is formed, which reliably protects the building from moisture;
Combined compositions are capable of protecting not only from fungus and mold, but also, for example, from fire, that is, they include the properties of fire retardants.

Modern technologies for the production of such impregnations do not use harmful chemicals, so this material will not emit a pungent odor. This liquid is colorless so as not to hide the natural structure of the wood. Without much experience in repair work, can be easily treated with an antiseptic wooden walls, floors or ceilings with your own hands.

Senezh company products

The Russian company Senezh has been specializing for many years in the production of impregnations that protect wooden buildings from a variety of harmful influences in any climatic environment. Their materials are among the best on the domestic market.

Why you should choose Senezh products:

products from this manufacturer not only protect the material from fungus, mold, fire, etc., but also, after drying, emphasize the natural structure of the wood, making it more attractive;
after the Senezh impregnation has dried, you can be sure that the tree will now last for many years, no matter what influence environment it wouldn't be. This is achieved due to the fact that the film formed after the work is able to “breathe”;
favorable prices available to every consumer;
excellent composition and technical specifications, relatively low consumption per m2.

What Senezh products can you choose:

Senezh Aquadecor - is a composition made on an alkyd-acrylate base with the addition linseed oil. It is diluted with plain tap water and can be easily applied with your own hands. Consumption is 120-180 grams per m2. The price of such material is 490 rubles per container of 0.9 kg;
Senezh Sauna - protects saunas and baths from fungus and mold, is made on a heat-resistant acrylate base, to which special biocides are added that are not subject to heating. The consumption of such material is 120-180 grams per m2. The average price in a store for a package of 0.9 kilograms is 490 rubles;
Senezh Ecobio is an economical option for quickly protecting wood from harmful atmospheric influences. The composition of this antiseptic is a simple aqueous solution with the addition of targeted inorganic components. The average consumption is 270 grams per m2. 5 kilograms of this protective solution can be bought in construction stores for 350 rubles.

Which solution is best to choose depends on the specific purposes and location of the wood building. After consulting with a Senezh company specialist, you can choose best option for all your needs. To make sure of the positive reputation of this company, you can read various reviews on the Internet.

Products of the company Pirilax Lux

Working in the market of protective impregnations for natural building materials since 1993, Pirilax Lux has acquired extensive experience, which now allows them to produce high quality products using modern technologies.

The main advantages of Pirilax Lux are as follows:

low material consumption due to high adhesive characteristics of the product;
all Pirilax Lux compositions are universal, they can be used for both internal and external protection;
Only environmentally friendly components are used in production, so after drying, people and animals will not suffer any harm;
Pirilax Lux solutions not only destroy mold and mildew that have formed, but also protect surfaces from their reappearance in the future;
The material can be applied even at sub-zero temperatures down to minus 15 degrees;
Easy to use, you can apply it yourself with minimal skin protection.

The company’s most popular antiseptics are:

Pirilax Lux is a protective material that includes a complex of fire retardant substances, natural essential oil and functional additives. The average consumption per m2 is 100 grams. The price of one kilogram of products in the store is 375 rubles;
Pirilax Lux Classic - designed to destroy and protect harmful organisms on the surface of wood. Extends the service life of the material. Consumption when applying it yourself is 100 grams per m2. The price in the store for 3.5 kg is 820 rubles.
Pirilax Lux Terma - used for processing wood inside baths and saunas. Better than competitors protects them from elevated temperatures and prevents mold and mildew from developing in conditions that are favorable to them. Material consumption per m2, on average, is 100 grams. The average price in stores is 200 rubles per kilogram.

Neomid products

The Neomid company has been producing construction chemicals since 2005. Starting from a small assortment, the organization now offers a huge range of different protective substances for the most different coatings. In total, the company's line includes about 1000 items.

Review of NEOMID protective materials products

The best professionals in the construction industry choose the products of this company for their work;
In the production of products, exclusively innovative technologies are used, which allow achieving the best possible results;
The widest range in which everyone will find exactly what they need;
The warranty on Neomid impregnations is 30 years.

ABOUT high quality Neomid's products are supported not only by the experience of professionals, but also by numerous positive reviews on the Internet and the absence of negative ones. The main advantage of this company’s products is their low price, which makes wood protection even more affordable.

After reading this article, you can choose for yourself which antiseptic is best to choose to protect your own wooden house or baths. On the Internet, you can familiarize yourself in more detail with the characteristics of other antiseptics in order to choose exactly the material that meets all your requirements, so that you can apply it to the surface with your own hands and protect it from destruction.

Substances that impede the combustion of wood include fire retardants. They envelop the tree and significantly slow down the combustion process. In addition, antiseptics are added to the mixture to protect against mold and rot.

The nature of the action of the remedies differs greatly:

the composition melts. When exposed to fire, a protective film is formed on the wood. It prevents oxygen from reaching the wood, thereby slowing down combustion;
the composition swells. When the combustion temperature rises, the mixture begins to swell, blocking the path of the flame;
the composition decomposes. When fire protection decomposes, gases are released that do not support combustion.

Attention! If, in the event of a fire, an untreated log house is destroyed in 15–20 minutes, then a used one can last a day.

Wood processing is carried out:

step by step, first antiseptic, then fire bioprotection;
two types of impregnation at the same time.

Based on consistency, protective substances are divided into:

impregnation. They are odorless, capable of revealing and improving the structure of wood;
coatings (enamels, pastes, varnishes). They deteriorate the structure of the tree and smell bad. Used for finishing elements.

The composition of the mixture is:

water-soluble, more natural and durable;
organically soluble, they must be diluted with toxic flammable compounds.

The right choice of protective compounds

Fire protection products are so important that you need to choose them not only on the advice of the seller, but also based on your own knowledge.

Points to consider when purchasing:

Does the seller have a certificate of conformity and a conclusion from the sanitary and epidemiological station?
Efficiency group.
The basis of the composition (salt or non-salt).
Consumption.
Absorption depth.

Composition and documents

Each wood processing product must have documents, without which the sale is considered illegal. When purchasing, be sure to ask the seller to bring a certificate of conformity and a conclusion from the sanitary-epidemiological station. The certificate must contain all information regarding the features of application and the group to which the product belongs.

Another important characteristic is the composition of the impregnation. They may be:

saline. Easily washed out with water, the validity period is only 3 years. Suitable for indoor wood processing;
non-salt. Lasts 10-15 years, non-toxic, effective for external use.

Efficiency group

The most important difference various compositions considered to be the 1st or 2nd degree of protection.
GOST divides fire retardants into 2 groups:

Effectively protects throughout the fire.
They prevent fire, but do not last long.

Advice. The more layers, the better protection. 6 layers of the 2nd group have properties similar to the 1st layer of the 1st group.

If the 2nd group is indicated on the product, the wood acquires the properties of low flammability. If 1, then it becomes fireproof. IN residential buildings It is permissible to use only the 1st group.

Fire retardant consumption

The peculiarity of protective compounds is that when purchasing, you need to pay attention not only to the price tag, but also to the consumption. After all, a cheaper product may be more wasted, and in the end it will cost more.

Attention! Cheap salt formulations are consumed in 2-3 rubles. faster than expensive non-salt formulas.

For example, “Senezh”, a salt mixture of group 1, consumes approximately 600g/sq.m. if you process wood 6 times. Neomid is more expensive, but provides similar effectiveness at a consumption of 250g/km.m.

Absorption depth into wood

Based on the depth of penetration, two types of compositions are distinguished:

superficial, penetrating to a depth of 6 mm;
deep penetration. Penetrate to a depth of 12 mm.

Advice. Impregnation with color makes application easier, because you can see where you have already touched with a brush and where you have not yet. But the color remains for a long time, so it is better to use a colorless product on the facade and in any visible places.

The more common option is option 1, because it can be applied by roller or brush. In addition, such impregnation does not reduce the strength of the wood product.

In residential buildings it is necessary to use fire protection equipment of the 1st degree of protection

Means belonging to the second group are specialized. Special equipment is required to apply them.

Explanation of symbols

As a rule, on packaging with impregnation from any manufacturer the following letter code is indicated:

"B". Contains boric acid;
"D". Under the influence of flame it forms a protective film;
"M". Contains copper sulfate, which protects against mold;
"WITH". Contains baking soda that protects against fire;
"F". Indicates the presence of sodium fluoride, a toxic substance that destroys pests and fungi;
"X". Toxic composition that destroys wood borers and bark beetles;
"HA" is a gas-releasing agent.

Professionals advise that before processing wood, thoroughly clean the surface of cobwebs, dust, old impregnation or paint.

The protective composition is applied to treated, sanded wood with a humidity level of no more than 30%.

It is advisable to carry out all work at positive air temperatures, otherwise water frozen in the capillaries will reduce the efficiency of processing.

Active participants in construction forums argue about the need for fire protection. Some are absolutely confident in its effectiveness, and some claim that if the room is well ventilated, the composition will disappear in 1-2 years and suggest covering the wood with the mixture copper sulfate and lime. One forum member conducted an interesting experiment: he treated a newspaper with fire-bioprotection and tried to light a fire with it. The newspaper did not catch fire.

Popular brands of impregnation

The market is filled with worthy products from domestic and foreign manufacturers. They differ in group, purpose and cost.

The most common ones are:

"Senezh". Used for external and internal work. The period of protection against fire is 5 years, against bugs and mold – 20 years.
"Olympus". Treatment with the composition of the 1st group is possible indoors and outdoors. The fire retardant is valid for up to 7 years, protection against insects and fungi – 10 years. For the 2nd group, the period is shorter - fire protection - 5 years, bioprotection - 10 years.
"Pirilax." The formula of the composition is distinguished by the presence of preservatives that protect the wood from cracking and aging. Available with two protection groups. The validity period directly depends on the climate zone. If on external walls If it rarely rains, the flame protection will last for 5 years. Deadline for interior spaces– 12 years old.

Frame construction is breaking all records in popularity. Glued laminated timber and rounded logs are also actively used. Builders remind you that wood can be used for construction only after appropriate protective treatment. Fire-retardant compounds selected according to the specified criteria will help ensure the safety of any building.