The process rafters and what does it do ?

The process rafters in the first place?

rot - not that other, as the effect of fungi on wood fibers, these pretty hardy microorganisms in extreme quantities absorb organic matter contained in the tree, causing the familiar to many visual effects.About the fire can not explain, even a child knows how to easily burn a log in the dancing flames, beautiful and ruthless of all that can be used as fuel.

Therefore, intending to move on to the final part of the construction of the house - namely, to laying the rafters and lathing, consider that threatens lumber primarily based on climate characteristics.For example, excess moisture can be a favorable factor for the emergence of the fungus, and frequent drought in the region often leads to fires (over-dried wood is ignited like gunpowder).Based on the analysis, it will be easier to solve than to handle the rafters as the impregnation and wash, to prioritize the use of substances.

wood processing is carried out with antiseptics and flame retardants, and the sequence of their use is dictated by the degree of probability of occurrence of rot or fire design.

primarily used impregnation, penetrating deep into the structure and then comes the turn of pack.As impregnation may use only one part - or fire retardant or antiseptic twice impregnate wood fibers will not work.

Therefore, if you are afraid of rot - soak timber antiseptic, and if you are afraid of fire - fire retardant.As wash course be applied with other material properties than that of impregnation, that is, if the flame retardant was used, the surface treatment is carried out with an antiseptic.

How does the processing rafters?

how difficult it is to process the rafters, it depends on whether they are already installed, or you are just planning to start the construction of the roof frame.It is logical that in the first case of deep impregnation becomes virtually impossible to measure, perhaps through the use of special equipment (pressure impregnation).If the house is already built "on a horse", be prepared to take up roller and Brushes.If rafters still lie on the ground and build them into the roof construction is only planned, do not hurry, better run the full impregnation.

To preservative or fire retardant deeply penetrated into the wood structure, it is desirable not only to handle it from the outside, even in generous portions, and completely immerse the rafters in the chosen composition.For this closely welded trough, length and width slightly greater dimensions of rafters, from the inside it was covered with a polyethylene film, which is being targeted staple gun.

The resulting container is filled with impregnating agent, in which the sink and turn on the 1-2 minute prepared rafters.The trough can be replaced dug and ready made polyethylene shallow ditch. After impregnation, the rafters are set so that the air flow has been to all four planes , drying take away one day, that is enough.

Various cuts, grooves and the end of the trusses is further processed manually, as particularly vulnerable in these places wood fibers.

rafters Surface coating is carried out by roller, paint brush or maklovitsej.The substance is intended to cover the outer timber, it forms a thin, but quite durable (from 2 to 8 years) film.Substances contained in the composition of an antiseptic, prevent the emergence at the surface and penetrate deep into the fungus filaments, and flame retardant components are of two types of actions: melting and decomposition with the release of gases.

first (phosphoric or silicic acid salts, boric acid) upon contact with an open flame creates reflow film, which largely slow heating of the wood, and the second through the allocation of non-flammable gases (sulfur dioxide or ammonia) diluted combustible gases and repel from itoxygen, preventing inflammation.The refractory stucco primitive can be used as a flame retardant.

Universal impregnation for rafters - Myth or Reality?

Protect rafters and lath from all sorts of trouble - it means repeatedly treat the wood with different compositions, which involves a lot of labor.And so I would like just once to dip the next element of the roof frame a universal composition and drying after a short set at the place of destination.Only happens if such treatment for the rafters, which protects from the fire, and will protect against fungus and wood borers discourage?

Yes, of course, such compositions are, manufacturers and impregnating plasters Wood has long been engaged in the development of universal tools, and some advances are taking place.The components of such compositions include solutions of the salts preventing fire wood, and various substances (mostly surfactants) which interact with antiseptic additives and oppose the emergence of the fungus.However

universal compositions have a disagreeable quality - you never know after treatment, if there is enough impregnation was done well.And even if you want to insure and continue processing the rafters and battens, already will not work, since there was already a protective film on the surface.

At the same action timing components may be very different, for example, antiseptic additives based on 2 years of service, and the component responsible for fire-resistant properties will last 10 years.This will mean that the wood is being protected from fire, would be vulnerable to the appearance of the fungus, which is to form rot in rafters structure will break and fire.So whether or not to use complex compositions?