The term wood preservatives defines that the preservation is the process of preserving wood from the wood destroying agents like insects or fungus so that the life span of the wood can be extended.
It refers to the treatment of timber with chemicals to impart resistance to degradation and deterioration by living organisms. The proper application of chemical preservatives can protect from decay, and stain fungi, insects and marine borers, thus prolonging the service life for many years.
The material contents cellulose, hemicelluloses, starches and other susceptible materials that attract the fungi and insects to be degraded and eaten. After the preservative treatments, the fungi and insects cannot decompose and feed on these substances, hence the durability of wood is to be increased.
Everybody is well aware that furniture is prone to attacks by insects and environmental factors such as moist, mildews decay etc. This is a fact and no need to discuss more about it.
Everybody is also well aware that use of finest quality preservative increases the life and structural strength of wood greatly.
One thing must be remembered that preservative must contain sporicides, fungicide, termicides and miticides. Must be environmental friendly and safe to human and cattle and birds. Also one has to offer many formulations according to specific species of wood/timber.
There are many enemies of wood. Some of them are listed below.
Termites: Queen lives in ground up to 20 feet deep. Workers tunnel to surface under a piece of wood and start eating it.
If they can’t reach wood from ground, they build tubes of dirt up to the wood. Some tubes are self-supporting and reach up to 2 feet. Others are attached to other structure such as block wall and have been known to go up 8 feet to reach wood.
Termites never work in the open. Always in wood or tubes.
There are only two types of homes in the world those with termites and those that are going to get termites.
Borers: Borers is the great enemy of wood and generates great damage to wood. Wood Borer adults are 3/4 inch in size, long horned brown to black in color. Beetles larvae is whitish and produce tunnels in wood. Larvae stage is more destructive. Borers feed on both soft and hard wood. Adult beetles lay eggs in crevices of wood. When, larvae hatch tunnels inward, adults break through the surface leaving tiny round or oval shape pin holes.
Adults lays eggs in open pores of wood. Larvae eat causing honeycomb. After pupating and becoming adults, they bore out of the panels leaving behind small holes and a pile of powder or “sawdust”.
Fungi: A decay fungus is a variety of fungus which has the ability to digest wood, causing it to rot. Decay fungi include those which attack dead wood, such as dry rot, and those which are parasitic on living trees, such as Armilariahoney fungus. Fungi that not only grow but actually cause it to decay are called lignicolous fungi. They do not necessarily need to decay lignin but be termed lignicolous. Dry rot fungi decay cellulose in wood leaving behind the lignin as the brown crumbly remains.
-- Well known for wood protection and restoration