In recent years, the desire to simultaneously achieve environmental purity and energy saving has caused a number of proposals for thermal insulating materials based on natural products. The German company Naturbauhof has developed a technology for the manufacture of wood-fibrous slabs (fiberboard) exclusively from wood without the use of extraneous binding materials. The slabs are designed for the device of an additional subcutaneous heat -insulating layer. They drain the water penetrating under the slate or tiles with rain and wind, for which the outer surface of the fiberboard is covered with a protective layer of natural resins or latex. The protective layer gives the slabs waterproof, but retains their diffusion ability — the material “breathes”. At the same time, undercover plates play the role of the heat -insulating layer, since their thermal conductivity is 0.05 VM3, the thermal conductivity coefficient is 0.035 VTM3 and the thermal conductivity of 0.047 VTMM2, which causes 10 percent sediment, which is quickly stabilized. This allows, with appropriate technology, to arrange from corelith w preparation for the floors designed for the perception of compressive stresses. In the manufacture of material, preservatives, insecticides, pesticides and compounds of heavy metals are not used. Nevertheless, he is protected from mold, rodents and insects. Corelith W over time does not lose fever, does not form dust during abrasion and is suitable without restrictions for re -use or composting. The material is certified and admitted to use in building structures. Corelith W has a high diffusion ability and vigorously absorbs water vapors from the air, returning them back with a decrease in relative humidity. Thanks to this, the layers of the material act in winter as a heat insulator, and in summer as a heat -compensator aligning the temperature. A good example of using new in the production of wooden profiles of extrusion technology was the profile released by the German company Maschinenbau Kitz. The idea of extrusion production of wooden elements of a complex outline was adopted on the basis, which is much cheaper than their release on woodworking lines. To switch to extrusion technology, a thermoplastic fibrous mixture containing 85% of the tree plus the binder was developed. Passing the mixture through the extruder, it was possible to get a wooden profile that differs from the aluminum analogue by appearance, low cost, dielectric properties, low weight. According to the developers, a wooden profile should become an alternative to standard aluminum products in the manufacture of light furniture for the bureau, racks, screen, fences, and housings of electrical appliances. In order to freely introduce a wooden profile into the produced assortment instead of aluminum elements or in combination with them, it is made by a geometrically identical widespread aluminum analogue — 40 × 40 mm. In combined structures, aluminum is left in the most loaded elements of products — racks, crossbars, supports. In the cross section, a wooden profile is a simplified version of aluminum: a square 40 × 40 mm with longitudinal (10 mm) slots on four sides and diagonal internal ribs. The weight of the profile is 0.8 kgm22, the elasticity module for bending is 4000 nm2, the shock strength is 6.4 kjmm2. Profile material has a density of 1.05–1.2 GP. m. A similar aluminum profile worth 9.31 by an eur at a density of 2.7 g (m2 • K), electrical conductivity 38–34 mmm2, elasticity module of 70,000 N/mm2 and explosive extension of 10%. Profiles are supplied with a quick -collapsible aluminum fastener of a new structure in the form of a bolt sliding in the slots, tightened with a screw mortar mounting part.