certified construction timber

We are a manufacturer of fire-proof wood but also a distributor of solid and glued attested construction wood and profiled wood. Chemical composition and structure of wood affects the physical properties of a given type of wood and is connected with the specific gravity. In dry air state (12% moisture), there are groups of wood: very heavy (hornbeam, yew, ebony, exotic types), heavy (oak, ash, walnut), moderately heavy (juniper, chestnut, mahogany), light - pine , spruce, fir, lime, cedar), very light (poplar, balsa)