wood features: i) hygroscopic material (exposed to dimensional changes for variations in the gain or lose water from their surroundings) ii) be an organic material exposed to oxidation, fire, mechanical wear and numerous agents of biodeterioration; determine its treatment for the purposes of its best use and conservation. Therefore, become important drying processes, preservation and treatment appropriate to its use.
The drying process extracts moisture from the timber, whether open-air drying or kiln drying. This must be progressive for the purpose of generating a product free of defects and dimensionally stable.
Meanwhile, preservation techniques, also improve quality as they are used to prolong life of wood and wood products.
wood preservation promotes i) development of a greater number of wood species or even the secondary timber nondurable ii) longer life to the wood in general and especially those used in construction.
wood preservatives include: oil-soluble
as creosote and pentachlorophenol
Hidrosolubles: salt formulations of fluoride, boron, arsenic, copper, zinc, etc., Metals that have different functions (insecticides, fungicides, fixing the active ingredients). Such is the case of CCA (copper, chromium, arsenic), volatile or non-leachable.
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