Block house has established itself as a strong and durable finishing material. For its production, mainly coniferous or deciduous trees are used. Log panels are non-toxic and have high heat and sound insulation qualities. But there is one drawback - the material has low moisture resistance. Is it possible to protect the surface of such a wooden covering from various climatic influences? How to treat the outside of a block house in order to preserve its original appearance for as long as possible? Let's try to find answers to these questions.
Do I need to paint the block house?
Houses made from this material have many advantages, due to which they become popular. The block house has an attractive, aesthetic appearance.
Natural wood, which is the basis for finishing, must be protected from the appearance of fungus and attacks by wood parasites. Impregnation or other special compounds will extend the life of natural wood.
The main enemies of wood
If an unimpregnated block house was nevertheless purchased for cladding the house, then it is necessary to immediately take care of its protection. The main enemies of wood, which can render it unusable in a fairly short time, are:
- insects: grinder beetles, weevils, pine tar and leaf rollers, bark beetles and typograph beetles;
- microorganisms: fungi, mold, actinomycetes and bacteria;
- atmospheric phenomena;
- fire.
Therefore, when deciding to cladding a façade with a material as vulnerable as anything natural, you should be aware that beauty will require certain sacrifices, that is, efforts that will have to be made periodically to maintain it.
Required tools and materials
Before processing, you will need to level the surface, remove nails, remove joints and chips. To do this you will need to stock up on primer. If this is not done, after some time traces of rust may appear on the surface, which will certainly spoil the appearance.
To apply impregnations and paints, you will need to prepare a roller or a special spray bottle.
It is better to paint all joints and seams with a brush, but this should only be done in the longitudinal direction.
For preliminary preparation of natural wood, you will need brushes with hard bristles.
To effectively paint the end sections and reliably protect the surface from damage and harmful environmental factors, special sealants will be required.
Process steps
Sanding a house made of timber, when a dry surface is processed, including the ends, takes place in two stages:
- Rough grinding
. The walls are leveled using a belt sander or grinder with an abrasive wheel with numbers 40-60. At this stage, all significant defects are removed, and the surface is prepared for subsequent, finer processing. The attachment on the sander quickly becomes clogged with wood dust and needs to be replaced frequently. - Fine grinding and polishing
. To perfectly level the surfaces, treatment is carried out with a vibrating or orbital sander using a fine-grained abrasive (up to 100). For fine sanding, hand sanding is used using sandpaper (numbers 120-180). Alignment of corner joints is carried out manually, using a narrow chisel. Unprofessional processing can leave scratches and grooves that will have to be corrected with additional polishing. After fine sanding, the surface of the walls becomes smooth, pleasant to the touch and ready for subsequent painting.
Fine sanding of timber inside the house using a vacuum cleaner to collect waste Source nl.decorexpro.com
How to prepare the surface?
Is it necessary to paint a block house and how to make high-quality preparation for work? Before treating the surface, thoroughly clean it from dust, dirt and remnants of old materials. The process is carried out with special steel brushes or a grinder.
If there are areas with mold on the facade of a block house, it must be thoroughly cleaned and then treated with bleaching agents. For this purpose, special stains for lightening are offered.
Rollers and brushes are used to apply the final coating. The brush provides precise access to hard-to-reach areas. But painting with a roller or spray is much easier and faster.
Results
If you already know how to paint a block house on the outside and how to paint a block house on the inside, you need to pay attention that these are different types of work.
When starting to paint the exterior, you need to check the weather forecast. The weather should be dry and preferably warm, which will allow the paint to dry in the shortest possible time. Before starting work, the wood should be prepared: cleaned and bleached.
After cleaning, the surface must be primed. To ensure that the paint is distributed evenly, you need to start painting from the top.
- Painting inside.
For interior painting, a more decorative coating, without deep impregnation, is more suitable. Typically, for such purposes, colorless varnish, glossy or matte paints are used, approximately the same shade as the block house itself. Impregnations are also applied shallowly and in one layer. In order for the paint to “take root” well, the inner surface should also be primed.
Transparent compounds
Protective transparent azures, varnishes, are a solution that will not only preserve the finishing material for a long time, but also preserve the natural appearance of a wooden block house. Products without color can be used to treat a block house not only outside the house, but also inside.
When working indoors, it is recommended to apply 2 times less layer of varnish.
Impregnation
To eliminate parasites, mold and other unpleasant phenomena, impregnations are the most effective. According to classification they are offered:
- Oil based (based on linseed oil).
- Acrylic water soluble.
- Alkyd (with alkyd resins).
Transparent impregnations have the following characteristics:
- Antiseptic.
- Fire retardant.
- Bioprotective.
These properties provide the following characteristics:
- Protection of the block house from mold and mildew, damage by harmful insects.
- Prevents the appearance of darkening and blue areas.
- Reduces the formation of chips and cracks on the surface.
- Increase the period of operation.
In addition, transparent impregnations are a universal base for decorative painting.
Stains and varnishes
If you need to paint natural wood, so as not to distort the natural color and pattern, special stains and varnishes are offered. The composition of these products effectively protects the block house and preserves its naturalness.
When dealing with the issue of painting a block house, you must adhere to the following recommendations:
- Before carrying out the procedure, the surface must be prepared, cleaned of dust, and if necessary, dried.
- Prepare in advance a foam roller or brush for painting the house block.
- Initially, you need to apply a thin layer of tinting product.
- For the first layer of indoor treatment, it is recommended to use one-component stains or varnishes.
- Indoors, for high-quality protection, only 2 layers of a transparent product will be enough.
- For exterior work, two-component house block paint should be used.
- The exterior of the building is treated with a double layer of varnish.
Lazuri
The peculiarity of using azure is that it is a universal product that combines the features of impregnations and the advantages of varnishes. Lazuries are also called glazing agents.
Thanks to their combined properties, glazes simultaneously take good care of the wood and give an interesting, sophisticated appearance to the surface.
The assortment includes the following glaze compositions:
- Tinted.
- Alkyd.
- Alkyd oil.
- Alkyd-urethane.
- Matte.
- Glossy.
To add texture to the surface of the house block, glazes are used, which allow the natural material to be tinted in any shade.
For protection you will need at least 3 layers of the composition, which can be conveniently applied with foam rollers or oil brushes. Sprayers can be used for processing, but this requires some experience. If you don’t have the skills, it’s better to use the services of specialists; the price of the work will depend on the area of processing.
The undoubted advantage of azure is the combination of high quality, affordable cost and the ability to extend the service life of the block house for a long time.
Industrial processing
The photo shows an autoclave for impregnating wood under pressure.
Manufacturers of natural wood products are trying to use their capabilities to improve the qualities of the Block House. They use various impregnations for this, which have protective antiseptic properties and prevent:
- wood rotting;
- wood fire;
- infestation by harmful insects.
But do not think that production specialists simply pass brushes or rollers with the composition over the surface of the product. In modern workshops, special equipment is installed, with the help of which deep impregnation of lumber is carried out.
The process takes place under high pressure in autoclaves. This makes it possible for protective chemical compounds to penetrate very deeply and penetrate solid wood through and through.
In an autoclave (pressure chamber), Blockhouse processing occurs in the following order:
- removal of residual moisture and air from wood capillaries under vacuum;
- the process of injecting the reagent into the pressure chamber for finishing wood is underway;
- under hydraulic pressure, the wood is impregnated with a chemical composition, the honing time is individual for each type, the depth of impregnation must comply with GOST 20022.0 -93;
- then excess chemical is pumped out and the wood is exposed to a vacuum, surface moisture is removed;
- the material is maintained at normal atmospheric pressure, the process of fixing the preservative liquid occurs.
This method of treating wood under pressure is called impregnation. The price of finished material is higher than untreated material, but the quality is worth it. Unfortunately, not all wood products are yet impregnated.
Opaque formulations
To stylize the appearance of the building’s façade and to give the interior a certain “zest,” you can use textured opaque compounds.
Water-soluble paints
When treating the surface of a block house, water-soluble compositions can give it the following colors and shades:
- Nut.
- Oak.
- Ripe cherry.
- Red tree.
- Maple.
- Lemon.
Water-soluble compositions are not as durable as analogue paints or varnishes, but they are much more environmentally friendly and safer. Due to this, water-soluble paints are preferred for indoor use.
Organic solvent based paints
Protective compounds developed on the basis of organic solvents can be of the following types:
- Acrylic.
- Alkyd.
- Polyurethane.
- Enamel.
- Oily.
Paints based on organic bases differ from analogue offerings in their high quality of coating. It is very convenient to work with them inside the house, for example, on the balcony, in living rooms.
But, despite this, paints based on organic solvents erase the natural imitation of wood, and the individual feature of the block house is lost.
Video description
About correcting wall defects before sanding in the following video:
- Condition of the walls
. If walls made of profiled timber are covered with paints and varnishes, you will have to pay additionally for cleaning the old coating. It will also be more expensive to process walls with a large number of defects (jags, irregularities and resin). - Expected Result
. It depends on the customer how many passes will be made before covering the walls with wax, varnish or oil. - House height
. If the work requires the use of scaffolding, the cost of working at height will be higher. - Comprehensive services
. If you order sanding of corrugated timber walls together with painting, the work will cost less than separately.
The cost of sanding internal walls made of planed timber (profiled or glued) is:
- Sanding walls
. Standard processing includes two passes (first with coarse, then with fine sandpaper) and costs from 200 to 350 rubles/m2. - Polishing the walls
. From 170 to 250 rubles/m2. The surface is treated once. - Finishing
. It is carried out after applying wax or varnish. From 320 rub./m2.
The customer determines the degree of treatment of the internal walls Source roomester.ru
Russian, Finnish and Swedish folk remedies
Different countries have their own characteristics of construction and subsequent maintenance of buildings. Folk recipes for processing block house have proven reliability over hundreds of years.
Russian recipe
In Russia, wooden houses have been built for many centuries, so over the years, many effective and simple recipes for caring for wood have accumulated in the arsenal.
The walls of houses are covered with lime-based products, and clay compositions are also used.
The clay-salt-water solution is very popular. It is suitable for processing wooden surfaces:
- Prepare the ingredients clay, salt and water.
- For the solution, take 74 parts clay, 4 parts salt.
- Add water in such quantity to obtain the consistency of thick sour cream.
After this, brush the block house with a thin layer, wait until it dries completely, apply the 2nd layer.
Finnish recipe
The Finns do not lag behind in house construction methods; they also have high-quality and reliable methods of caring for natural wood. One of these recipes:
- Combine 720 g of rye flour and 1.5 kg of iron sulfate in one container.
- Add 360 g of kitchen coarse salt and 1.5 kg of dry lime to the mixture.
- Dilute the resulting dry mixture in 6 liters of water.
- Strain and put the mixture on low heat.
- Bring to a boil and stir constantly to form a creamy paste.
- Boil 3 liters of water and carefully add to the paste.
The consumption of the protective mixture is 300 g per 1 sq.m.
The Finns also offer a variety of high-quality and effective ready-made compositions, for example, Tikkurila varnishes or the glazing antiseptic composition Valti Color Satin.
