Wood is the lightest construction material which, aside to optimal properties of heat insulation, also demonstrates high hardness and thus is used for supporting parts of the structure. Ecologically, it is top quality using solar energy in the production thereof. Wood is the best natural insulator (six times better than brick and 15 times better than concrete). Wood 13-mm thick provides heat insulation as 45 cm concrete or 18 cm bricks.
When properly processed, it is extremely lasting and does not need chemical protection under roof and indoors. When a wooden house is dismantled after years of being used, there is not waste but only wood which still can be utilized. Individual construction parts or elements, for example beams, can be used again. Wood waste is used for producing energy.
Wooden surfaces make the ambient more enjoyable, spatial climate more comfortable since it regulates air moisture very efficiently. Wood protects immune system since it overtakes harmful matters from the air and for a few hours decrease their concentration to a tenth. It is healthy, does not emit radioactivity, harmful gases, dust or static electricity. Wooden structures do not obstruct passing of the Earth magnetic forces, which are important to human health. Long term tests indicate that wood has positive influence on human well-being.
As a construction material, wood is interesting constituent for users bearing balanced ratio of price/labor, easy to process it within shortly thus providing for short completion of construction works. Using wood as construction material is like dry building method, regardless of bad weather conditions. It means fast assembly works, shortest construction terms, low transportation cost, short heating time and low heat losses which enhance economic advantages. Wood is easy to combine with other materials. In case of fire, wood transmits 10 times lower heating quantity than concrete and even 250 times than steel.
High static quality is also a property of wood as excellent construction material. Wood-supporting parts can be used as various structures, vary from supporting beam to multi-storied construction buildings. This property is provided by wood microstructure which is responsible for high loading property. Compared to its own weight, it carries 14 times more. Like steel, its strength to pressure corresponds to reinforced concrete. Wood is even 5 times lighter than concrete due to its density which is 400 to 800 kg/m3 compared to concrete with density of 2500 kg/m3, which makes wood less heavy to transport.
OSB (Oriented Strand Boards) board are made of long, thin-layered chipboards of great surfaces. In external layers of the board, strands are oriented vertically relative to processing direction and in middle board layers, strands are oriented across. Such orientation of particular layers provides to OSB boards exceptional stability of form and high values of hardness. OSB is ideal material for fabrication of diversified structures and alike.
Prevailing wood raw material is juniper and, less often, pine tree.
Nowadays, producers of construction wooden structures take this material, due to its optimal cost and quality properties, hardly replaceable. The boards are frequently used due to their interesting texture, profiling interiors with unusual appearance. The composition, structure, color and appearance of wood are less outlined features of OSB boards.
What features OSB boards made of wood strands compared to other insulating materials?
Extreme protection against warmth and coldness. Highest capacity of warmth accumulation compared to other insulating materials.
OSB boards made of wood strand are diffusely open and regulate moisture. If a relative room air humidity rises, it is overtaken by diffusely opened boards. If humidity values decrease, wooden construction material delivers water.
- superior mechanical-physical properties
- compact, homogeneous structure of boards without fissures, knots and defaults in layers
- highly steady forms and minimal changes in volume
- favorable heat insulating properties
- ecological material with attractive appearance
- small weight, low price
- visually uniform surfaces
- recycling / boards are 100% recyclable.
Mineral wool ranks as most often used materials for protection against heat, noise and fire. It is so due to its production properties such as: apart from being extreme insulating material, it is also inflammable, with melting point over 100oC, waterproof, long-lasting and easily processed. The basic constituents for mineral wool are kinds of minerals such as diabas, basalt, dolomite and other mineral materials. The aforementioned materials can be collected at surface pits and they are practically limitless in quantity. Production is definitely very abundant: only one cubic meter of this raw material generates about hundred meters of mineral wool. So, the production of mineral wool spares resources.
The production begins with mineral melting at temperature of cca. 15000C. Finally, the melted material is transformed into fibers, then binders are added together with impregnating additives. Such processed fibers are collected into chamber and transform into wool felt. The felt is then condensed to required consistence and finally hardened at the temperature of about 2300C.
Impregnating, contents of binding agent along with the direction of fibers in wool depend on specific requirements to be met in final product. From soft boards for noise insulation to extremely resistant boards, for example, for flat roof insulation.
Insulation with mineral wool means not only heat, noise and fire insulation but also environment protection since it decreases energy consumption for heating derived from fossil fuels, thus lowering harmful substances emission, such as carbon dioxide. Researches conducted by independent French Institute for ecology Ecobilan reported that mineral wool as insulating material, during its life-cycle, saves about 1.700 times more energy that what is spent for its production. It is not only the advantage for the environment but also for users. Customer saves money through lowering heating costs.
Consumption of heating energy is in direct relation to thermal insulation of a house.
|Loss of heat|
|Traditional house||Point of heat loss||Prefabricated houses|
|25-30%||via ceilings (roofs)||10-15%|
|10-20%||via floors||5-10 %|
|25-30%||via facade walls||10-15%|