With all the advantages of houses made of wood, they also have a significant disadvantage - they need to be periodically caulked. Some more often, others less often, but all shranks( log, beam, board) are subject to natural shrinkage, regardless of the technology of processing products and wood. And if you take into account that many elements of the construction of any building are made of wood( for example, a rafter system, doorways), then from the appearance of various cracks, crevices, gaps, not one structure is insured from which it would not have been erected.
Sealing of surfaces has two purposes - reducing heat losses and eliminating moisture penetration from the outside. Traditional materials for sealing joints-caulk( tow, moss and a number of others) are able to perform only 1 function - for insulation. That is why commercially available wood sealants are considered a universal means of protecting buildings from external factors. The most effective is the exterior decoration of the house.
Requirements for suture insulation
- Resistance to critical temperatures, as well as to their differences.
- The ability of a quality "hitch" with building( finishing) materials( adhesion).
- Minimum( or total absence) of absorbing liquids.
- Ease of use.
- Long service life.
Types of sealants
It should be noted immediately that there is no clear division between different representatives of this product by properties. For many of them, all sealants for wood are similar, the only difference is that some characteristic can be expressed more "brightly", or the range of use is wider( for example, temperature).
Silicone( transparent)
In addition to increased strength, such compounds are resistant to aggressive chemical compounds and the influence of the atmosphere. It is also important that they are neutral to the ultraviolet. It is these qualities that ensure their effectiveness in performing outdoor works. Good adhesion( reliability of the "coupling") with most substances makes it possible to seal joints between heterogeneous materials. The elasticity of the formulations and their ability not to lose their properties at temperatures from -50 to +140 ° C significantly increase the maintenance-free period of operation of the structure.
Waterproof
As a rule, it is used purposefully - for sealing joints around air ducts, chimneys, sheets( sheets) of roofing material and the like. It is advisable to use in the processing of places of installation of slopes, casing and in other parts of the house, where there are elements of the construction of wood. Typically, such sealants have in the composition of various additives, protecting the material from decay.
When selecting, it is necessary to look at the "fractional" component ratio. Better( in terms of water resistance) is considered to be products in which there is more silicone. Incidentally, this also applies to such characteristics as tensile strength.
Approximate cost of 1 package( tube) in 310 ml - 65 rubles.
Acrylic
As a rule, they are used for the treatment of fixed surfaces( junctions), since, for all their remarkable properties, they are not elastic enough. If the shrinkage process is not over( the structure is no more than 4 to 5 years), then use of such compounds does not make sense, since the reliability of the sealing will be broken over time.
It is advisable to repair cracks, cracks in a board, a log. It is convenient to handle joints in the area of window sills, around the openings( door, window).However, such sealants do not "like" temperatures below -15 0С, so you should take into account the climate in the region.
The plus is that such formulations well "hold" the layer of applied paint. In addition, they are available for sale already with a different color design( adding a dye at the production stage).Therefore, if you want, you can choose the appropriate shade.
The price of packing 310 ml starts from 70 rubles, as the cost of the sealant greatly affects the cost. The cheapest is black.
In conclusion, it is worth mentioning such products as "Start", "Brownie", "Maxidom", "Warm seam".According to user feedback, they are pretty well proven.
There are some other types of sealants on sale, for example, polyurethane, bituminous. Some of them are also suitable for wood processing.
For exterior finishing of the house( caulk), it makes no sense to purchase a sealant in tubes - they will need too much. Compositions are sold and in a more capacious container - 5, 10 liters. For example, for acrylic 7 kg will have to pay about 1,900 rubles( 1 kg - from 270 rubles).It is quite enough for 45 - 50 lm.
Useful advices
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Wood differs from many other materials in that it is prone to rot. If you choose a sealant for it( given its large range), you should focus on products that have special components in their composition that prevent the appearance of mold and fungus. - Practitioners say that it makes no sense to opt for imported sealants. Their higher cost is not an indicator of better quality. The price includes such components as transportation costs, customs fees, various "cheating" of suppliers throughout the chain. Experience in the use of domestic compounds indicates a high quality of the corresponding products of Russian production. Moreover, the basis for all analogs are the same components.
- It should be taken into account that with the right choice of sealant and observance of the rules for working with it, it can serve for 20-25 years. Considering this, it is not worth saving on such compounds, purchasing on the principle of "only to be cheaper".
- If all the same there is a desire to use only imported products, then it is worth familiarizing with the conditions of its application and operation. Not all foreign-made sealants are adapted to the harsh conditions of the Russian winter, and for this reason one can well "get" by spending money and not getting the expected result.
- It is necessary to pay attention to such an indicator as the consumption of the composition( by 1 mp).To choose a sealant for wood it is necessary, being guided, including, and on the sizes of cracks, joints, backlashes.
