How to protect the wooden house: Tips owners and professionals

As the main elements of a wooden house to protect against the negative factors for many decades? Authoritative information from the industry

What should be afraid of anyone who dreams of a carefree life in the eco-friendly wooden house? According to the company's technologists Neomid, need to be afraid of mistakes made during construction and make carefree life impossible in principle. Here are just some of the consequences of such blunders:

• moisture, constantly adhering to the surface of building structures;
• mold growth who likes to settle on the surface of moist and exposed wood;
• low level of fire safety, which is the default characteristic of all wooden structures.

These troubles threaten to absolutely all owners of wooden houses, if their appearance does not have to fight for the construction phase. Here you can add a constant smell of dampness spoiled insulation, insect liking interior of timber walls as well as the inability to correct errors without costly repairs.

Today we look at how to reliably protect the wooden house from all of the above at the stage of installation work:

• how to build walls to clearly eliminate the occurrence of mold or mildew on wooden surfaces;
• what control measures can be taken to protect the wood from the damaging factors;
• how to make a wooden house facade waterproof, durable and aesthetically pleasing (to OSB-plate example).

In this article we will go over a frame houses, but the main points are equally relevant for ordinary log cabins, and karkasnikov and other wooden structures.

Vapor barrier - be

Strict observance of technology - it's the first thing should be guided by each builder. And if the technology capacity for a vapor barrier, then so be it. Why do we pay attention to it? Because dozens of pages of our forum dedicated to disputes about the benefits of the uselessness, or even about the dangers of vapor barrier. Some of our users are inclined to believe that the walls of a frame house should be "breathable". Allegedly, the diffusion of air which, in the absence of the vapor barrier will occur in the direction from the room to the outside surface of a wall, insulation and protect itself from the wooden frame condensate. This is nothing more than a delusion, and no "breathing" of the walls in the frame construction can not be.

AlexMann

user FORUMHOUSE

Want to physics? If you please: leave the wall, take the ceiling - the overlap between the warm room and a cold attic. Accept the use of any vapor permeable insulation: basalt or PPS-15 - no matter what. What happens in the winter? Warm humid air will rush through the insulation to the cold attic. Along the way he condenses into dew and the inevitable point, note: pleasing fall rain on the structure of the astonished inhabitants (the real experience of one of the members of the forum). Something similar happens in the walls and in the floor. This applies to the geographical strips, wherein the outside temperature is -10 ° C or -30 ° C and +22 ° C inside. Just take a priori - a vapor barrier is needed. Which exactly? That is another question.

In the classical frame of cake design has everything in order to protect the inner walls of the overabundance moisture, as well as fungal infections, and other microorganisms, because for them moist wooden surface - it is native element. The same applies to the other building systems based on natural wood.

The construction of the walls and ceilings must comply with the requirements of technology. This rule №1 to protect the wooden house from the destructive factors.

Dry and only dry substructure

Go ahead. It so happens that there is a vapor barrier, and at the same fungus blooms riotous color.

calculon

user FORUMHOUSE

Workers built karkasnik and sheathed inside vapor barrier. Final finishing we decided to do it yourself. When we started to work, we have found a vapor barrier moisture in the form of drops. Call the company, to build the house, they said - it's okay, just need to dry and ventilate the house. After 3 weeks of airing, nothing has changed. Opened in several places, steam, and found that the tree went fungus (black) and places the mold.

The reason for the disaster in this case is trivial. We all know what happens with a wet towel, which, after the beach remained for two weeks lying in a plastic bag. It just starts to rot and mold. The same thing happens with the wet timber, locked in a closed space. Rule №2 suggests itself: Avoid use in the construction of raw wood.

Alex Vl

user FORUMHOUSE

None of the mold tool will not help you, as long as the board does not dry to 14-18% humidity. Raw timber generally can not sew, or rather, everything is possible, but then what is inside - no one will undertake to say.

Moreover, in wet wood is not absorbed any protective structure. And the use of special surface treatments - is an integral part of building technology, and to this point we have already come close.

So, the right frame cake complete with dry wood will give you some assurance that the frame starts to rot over time. But there is a contradictory expression: "It's too good - too bad." And in this case it is very important.

D. 50

user FORUMHOUSE

Dry board, in terms of the counter mold and mildew, this is fine, but in terms of fire safety - very bad (and the land, the worse).

The last remark is quite logical, but at the same time protect the wood from moisture and excessive drying out and from (ie fire)? And can it and does not need to be protected from drying out? May fire protection is the other?

Irina Spegalsky

Technologist NEOMID

In order to prevent the destruction of wood in construction are taking a number of constructive measures: isolating it from the ground, stone and concrete, arrange special channels for ventilation, to protect wooden structures from rain and m. p. However, only measures of a constructive nature can not fully protect the wood from moisture and rotting. In conjunction with the construction methods around the world widely used chemical wood protection. It is achieved by coating or impregnating wood elements and structures special chemical remedies - antiseptics complex action.

Requirements for protective compounds for wood

Penetration of moisture into the internal structure - it is the first of which is necessary to protect construction wood. Because the moisture provides a fertile ground for the development of mold, and then - on the rise.

Irina Spegalsky

Wood destroys any moisture as much as fungi and insects. In the temperate latitudes of the share to the fungal infection accounts for about 90% of the biodegradation of wood. Fungi and insects use cellulose, lignin and other components of the wood as the power source. They can combine a single term - biological destroyers (biological factors). Number of biological destroyers of wood very high, and the nature of their impact on the wood is diverse.

Conclusion: The antiseptic protection - this is one of the main functions of any effective impregnation.

But we must not forget about the other important characteristics, without which remedies along with the use, can bring disappointment.

Irina Spegalsky

Quality modern antiseptics should be toxic to fungi and is absolutely harmless to humans. In the drug should not be a sharp odor. In performing its task, wherein the antiseptic should not impair properties of wood and also cause corrosion of the metal, if it is used in a building structure. Today, manufactured and successfully applied modern ecological protection of wood products from a broad range of biological pest wood. the latest generation of biocides approved for use in the cosmetic and pharmaceutical industry.

Also, the processing can not be called comprehensive unless it provides fire safety. After all, no accident compositions for impregnating construction timber called ognebiozaschity means of impregnation or preservatives.

But the presence of all of these qualities does not mean absolutely nothing if after 3 or 4 years of the protective effect of the composition loses its effectiveness. After all, no one did not dismantle the house to make reprocess its most vulnerable members. Meanwhile, fungi, insects and water very quickly fulfill their "destructive mission", if an accidental fire would not do that before. Therefore, for the treatment of wooden structures must be selected protective compoundsThat work effectively, even after 30 years after the application (this is the minimum lifetime of a wooden house built on modern technology).

Protect facade against premature destruction

Thus, each layer of the cake building should be in place, and special treatment for the protection of wooden structures can not be neglected. Otherwise, questionable savings will result, at least in tangible and unplanned expenses.

Also wellbeing picture which managed to create thanks to the efforts of violent, it can be destroyed by poor-quality surface finish. Very often it does not justify the hopes of the facade and becomes unusable before they are due. This is clearly seen in the classical facade frame house, sheathed OSB-plates.

Irina Spegalsky

OSB at 90% of the wood and only 10 - compounds of the resinous binder. Such plates and vapor permeability, just like a tree change size under the influence of temperature and humidity. That is, the material has a "breathable" properties of wood, but at the same time and her own weaknesses. Wood chips, is the basis of OSB, and can soak in it can live fungal spores. Particularly vulnerable in this regard are the ends of the plates.

For outdoor decoration, as well as for load-bearing structures, have their own special formulations. They improve the physical characteristics of the material and enhances its esthetic characteristics.

This is all kinds of primers, sealers and paints that affect the weakest side of the material.

Irina Spegalsky

OSB manufacturing technology involves the use of various binders such as resins, dyes, essential oils and the like. d. Please be aware that when applied directly to the surface decoration materials OSB, these substances may appear in the subsequent coating layers. Binders provide mechanical strength to the plate, but they are responsible for the low adhesion surface. For example, impregnation simply roll off the surface, without having a chance to penetrate the structure of the wood substrate. OSB is also very susceptible to the adverse effects of ultraviolet radiation. If the plate does not protect against exposure to sunlight, it will quickly become fragile and brittle. From here follow the basic rules of working with OSB.

• Particular attention - joints. They need to be protected from moisture and bioporazheny, even if it is moisture resistant grade OSB 3. This will help special sealants.
• Butt plate need tolerances on the volume change - gap should be at least 3 mm.
• The surface plate also needs to be processed (for protection against moisture and ultraviolet radiation).
• Before painting, pasting, or any further processing of the OSB must be primed with an adhesive composition (to solve the problem drip paints and provide hiding power consumption and cost), or an insulating composition (to protect the surface from the exudation resin) ground.

Universal protection with decorative surface treatments

Regardless of the facade of the species we can always choose impregnation of woodWhose qualities combine aesthetics with comprehensive protection against negative factors.

Irina Spegalsky

Currently available for impregnation of wood, which combine qualitative characteristics of protective and decorative materials. They can be used as independent protective means, in this case they can be used in as topcoats (antiseptics after pretreatment to provide enhanced Protection). They penetrate deep into the wood, enhancing biocidal activity. In this case, the wood-formed semi-gloss or semi-translucent layer which It provides enhanced protection of wood against weathering and moisture, from burnout and darkening. Typically, such compositions give the surface shades of wood.

Reapplication of decorative protection will help to upgrade the appearance of the dwelling and to prevent cracking of the outer surface of the timber, which is caused by the natural aging of the material. If the use of such materials in the final stages of construction, it will help to significantly increase the service life of the wooden facade.

Output

Two answers to seven woes - a comprehensive protection of the wood from the adverse factors through its high-quality drying and impregnation, as well as the observance of technology requirements, regardless of the temptation to save on steam insulation and other materials required.

Proper Pie frame house discussed in more detail here. What do users FORUMHOUSE the use of protective impregnation? Read about it in the relevant subject. On the basic nuances of the construction of wooden houses there is a detailed article. The video - information about the features of the construction and finishing of the frame houseBeing built to the standard design.

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