Crude, wood is more susceptible to blue than dried. However, dry wood can turn blue in the presence of the above conditions. Blue surface can occur even in well-ventilated stacks of wood. Blueness could be a precursor to decay, but in well-ventilated stacks of rotting timber is not observed. Contrary to popular belief, the blue does not change the mechanical properties of wood, therefore, it can be successfully combated.

A common remedy for blue is "white." Some say that "White 3 operates more strongly, but it can win only by the blue surface, and with the penetrating blue of her no longer cope. After applying the "Whiteness" surface of the wood is painted, whitish. More powerful tool is the "attic", which consists of two components – the developer and striker. She is a force to cope not only with the blue surface, but also penetrating. The above products contain chlorine.

Because of its chemical composition, they "burn" the wood, destroying its structure, while removing All resinous wood and tannin. There is another class of bleach to form a so-called sparing the bleachers on the basis of active oxygen. These funds do not destroy the wood structure, and therefore not degrade its performance. Wood gets pronounced light shade. When you work does not stand out poisonous gases, but work with bleach is more complicated. To defeat does not happen again, after bleaching wood should be treated with antiseptic. Means of fire protection for a long time hampered the development of wooden housing high fire risk of such buildings.