Tsynbal Rating

But, of course, guarantee by such means manufacturers can not give. One of the certified impregnations, appeared on the market of St. Petersburg, became a flame retardant BATH-1, developed and manufactured since 1993, JSC "Neohim." Originally part of produced in an aqueous solution, which, of course, was ineffective, as the objects that are handled by staff, had to carry plenty of water. Recently BATH-1 is produced as a dry powder that is diluted by place. Eugene Tsynbal: 'In our surface impregnation of wood allows you to transfer to the second group of fire-resistance rating.

Initially membership was created to handle the attics, which are just and should be such a group. And if we put the wood in the 20% solution, then, within two hours of deep impregnation occurs, which will translate the material in the first group of fire-resistance rating. " Sergei Tsvetkov: 'Impregnation under pressure – the Most promising way to protect wooden structures. Wood "canned" impregnation solution penetrates into it deeply enough. When a surface impregnation, after rassushivaniya layer is destroyed, the protection disappears. And when the pressure impregnation is guaranteed "the integrity" in the cracks of up to 1.5 cm.

At the same time – and this is important – the mechanical properties of structural treatment has no effect. " It is known that the first group of fire-resistance rating using the impregnation depth is achieved only through the autoclave. If you make a surface impregnation – the tree will receive only the second group of fire-resistance rating. However, in most cases deep soaking to impossible: not every structure can be disassembled to such components to each can be loaded into a special bath. Incidentally, before the processing of raw materials took place already at woodworking plants, and when the tree was going to construction sites, it has already been processed and had the right group of fire-proof performance.