How to avoid mistakes when painting a wooden house

Wood - a civil matter with a long history. Despite the many positive qualities - simplicity of handling, widespread, environmental friendliness, spectacular appearance, wooden houses need to be protected from adverse weather impacts.

In this part of the tutorial we will explain what you need to take into account the nuances of the staining of wood, and answer the following questions:

What causes a violation of technology staining wood.
Which requires the preparation of a wooden surface in front of her painting.
What are the most frequent mistakes are made when stained wooden house.

Basic principles of staining wood

Shows construction practices to defects painted decorative covering of a house built of wood, resulting in violations of the technology, as well as properly selected materials.

Any error made at the stage of preparation, may negate all the work done in the future lead to the need for costly repairs. On the photos below shows typical problems that may arise at infringement of technology of staining the walls of a wooden house.

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As can be seen, the decorative coating is peeled, and the tree began to turn gray. In violation of the technology and choosing the wrong tool 2-3 years paint may begin to break down. Thus under slezshey paint layer is exposed unprotected wood.

As a result, the wooden surface under the influence of UV radiation, first turn gray, then covered with blue and may begin to rot, because antiseptic washed away by rain, and the wood is no longer protected from the harmful effects of moisture. Front of the house loses an attractive appearance and its performance.

To avoid this, you must follow the recommendations of experts.

Evgeny Sereda (BIOFA specialist company):

Adverse weather conditions - rain, snow, wind, ultraviolet radiation, as well as mold and fungi can lead to accelerated destruction of the timber. To protect the facade of a wooden house, it must be treated with special agents, while adhering to a particular course of action.

The first mistake that can prevent an inexperienced builder, is improper surface preparation prior to staining or its complete disregard for this stage.

The need to prepare the wood surface

Often novice developers do not reflect the need preconditioning wooden surface before applying it onto the protective and paint materials, e.g., antisepsis or protective oil for outdoor use.

User thinks so, if he has got a quality product, the tool will run by itself. This view is mistaken. Prior to the application of special means of wooden surfaces it is necessary to prepare.

The fact that the sawing of wood and its subsequent gouging (planing) surface defects are: micro-cracks, nicks, mechanical damage. Additionally, since the workpiece is machined, the pores in the metal and wood jammed shut.

Because of this antiseptic can not penetrate deeply into the wood, as a result - reduced its concentration, which leads to a decrease in coating life. Later, when finishing wood on it can also manifest defects of processing and wood texture is not expressed as clearly as planned.

Conclusion: preliminary preparation of the surface - a necessary and important part of wood staining system.

To prepare the surface before applying the protective and finishing agents, it must be sanded. Moreover, it is done according to a certain scheme.

Evgeny Sereda:

I recommend to make sanding the wood, using a special power tools (grinder) in 2 stages.

First produce grinding using a coarse grit abrasive material P 60-80. This will help us to align the surface, remove the old layer of wood and eliminate roughing defects.
To finish surface grinding using an abrasive grit P 120.

The letter "P" is expressed by numbers from 12 to 5000. The larger the number in the designation, the smaller the grain size, and vice versa.

The better we otshlifuem wood, the deeper in its structure penetrates antiseptic. It is often allowed such a mistake, as the use for finish grinding grits P 80 instead of the recommended - P 120.

If we ignore these parameters, then coarsely ground surface will absorb much oil. The result: increased its consumption, the means will fall unevenly, leading to the formation of spots. Also, most of the oil simply absorbed into the wood, so the finished surface will be poorly protected against adverse weather conditions.

Typical mistakes made by staining the wooden house

surface grinding - is only part of the right technology staining wooden facade. After sanding before finishing staining the wood must be treated with a special antiseptic agent which protects the wood from the development of the fungus, blue stain and mold.

In this case, such an error can be tolerated.

Evgeny Sereda:

When choosing a soil-water-based antiseptic for its application ambient temperature should be at least +12 ° C. But many people forget that the temperature also applies to the drying temperature. If the work on drawing funds were completed in the evening, at night the temperature can drop to +5 - +8 ° C, which is a violation of the technology.

An alternative to aqueous antiseptics may be soil-antiseptic oil-based as in addition to protecting timber means may be applied to the surface at a minimum temperature of +5 ° C and max humidity 40%. This allows you to extend the construction season, rather than wait for favorable weather conditions.

After drying, antiseptic ground go directly to the surface of the wood staining. In addition to selecting quality productThat meets the specs to ensure the quality of color is necessary to adhere to certain manufacturing processes.

Coloring agent to be combined with the product used for the antiseptic timber. If you do not comply with this rule, and the means used to protect wood, forming on the treated the surface of the film, when the finish applied to the oil, it will not be able to penetrate into the pores of the wood and eventually exfoliates.

Paints based on natural oils, which penetrate into the wood structure, can not be applied over varnishes and paints which form a polymer film and prevent the penetration of oil into the structure tree.

A similar error - use antiseptics Water-based oils in combination with external works. You can get a completely different hue colored facade.

Of course, it is important to observe all technological stages, but other than that, for applying antiseptics and topcoats, oil-based, you must use the right tools.

For applying antiseptics, oils and glazes often choose wrist.

Evgeny Sereda:

Despite the ease of use and accessibility of this tool, there are a number of tricks to be aware of in advance. Brushes better to choose a mixed or natural bristle and dense packing, is about 10-20 mm.

Dense packing brush provides a better distribution of funds to the surface without leaving streaks. Also holds a sufficient quantity of the product, without the need for frequent dipping the brush in a jar.

Evgeny Sereda:

Also do not forget that you should not paint the house under direct sunlight.

Apply the oil in very hot weather, it is not recommended in direct sunlight. At high temperatures the viscosity of the product varies, it becomes more liquid. Product consumption is increased. Smudges may remain after application. As a result, the surface may be insufficient for long-lasting protection gram.

Also mistake is staining the wood after a rain. It is essential that the surface is completely dry, otherwise the oil will be phased out from the raw wood.

The finishing touches when painting a wooden surface is to ensure a sufficient volume of air in the place of work produced (especially when working indoors). The fact that the polymerization process (drying) oil comes in contact with oxygen. With a lack of air, the surface will be a long time to dry. Therefore we adhere to the recommended drying time. It - 7-10 days. Moreover, all this time you need to regularly ventilate the room.

Summarizing

Evgeny Sereda:

Choosing the paint for exterior or interior finishes are often allowed one essential error. Calculation of estimates for surface staining should be carried out not on the price of 1 liter of product, based on the cost of processing 1 sq. m of finished surfaces and the cost of its renovation in 10-15 years.

At low price by conventional film-forming compositions of the processing flow 1 sq. m can reach up to 200-300 g, and the consumption of oily funds - less than 2-3 times, which ultimately leads to cost reduction in the long term.