Tree – it is. Long-established reputation as construction materials for the windows. It is available as rising raw material, it can receive and process with less energy and not polluting the environment. Because of its low density, it possesses low thermal conductivity, which helps to reduce overall heat loss through the wooden box. This increases the feeling of comfort in finding near a window. Similarly, the utilization wooden boxes at the end of their operation is straightforward. Even developed his own life, the tree still remains a source of energy and by burning or by the use of biomass can be converted into other forms of energy.
Bound in wood, carbon dioxide is released and growing up, trees converted into oxygen: Wood is a renewable raw material. Timber during its growth dioxide accumulates carbon, due to long-term use of wood and articles of this gas remains bound and thus contributes to the mitigation of greenhouse effect. Tree requires the smallest amount of energy to manufacture, transportation, processing and disposal of all construction materials. Wood finds in the area of human life throughout the application. Roofs, ceilings, walls, wooden windows, doors, stairs, floors, furniture and household items everyday objects are perceived by us through a pleasant and distinctive surface appearance expressively and with sympathy. Wood for window production in mind the complex window profiles and taken loads should be a significant measure, without defects. Of particular importance is the durability of wood, high demands are made to the tolerances of the slope of the fibers, cracks, knots, insect damage. Thus, for the manufacture of windows used conifers are pine, spruce and larch with minimum bulk density 0.35 g/cm3, and a traditional hardwood is oak with a minimum of bulk density of 0.45 g/cm3