All this needs to be done in order that wood did not spoil on the operation course especially if products are not in the room.
The national method is a bitumen (pitch) dissolved by gasoline or usual working off of technical oil. Proverenno not small time.
On modern technologies for protection of the designs shipped in soil or in water, for example: cross ties, piles, the lower parts of wooden fences, etc., are intended special means on the basis of acryle.
From this follows that such did not happen it is necessary to process a wooden surface of any product in time. Especially as now in the construction industry the mass of various means is applied.
Solutions of the first group eco-friendly and not expensive. But over time they are simply washed away by water therefore it is better not to apply them to processing of wooden elements which directly adjoin to soil and the more so, to moisture.
Let's allow at you garden furniture or a fencing, the bench or the wooden bridge are open-air and therefore they should be processed any means what is on sale. It is possible also not expensive.
And if you it did not make it earlier, and the surface already turned black, it is necessary:
And still – these materials not only protect, but also increase esthetic qualities: after drying of impregnation create opaque, and varnishes – a glossy surface. Transparent or tinted. Some hide a basis completely – them apply for masking of the wood which became gray on the sun.