Wood preservation is a method to increase the durability of wood with a level of physical and chemical treatments . Wood preservation aims to increase the longer lifespan of wood , especially wood used for building materials or furnishings outdoors , because the use of the most vulnerable to degradation of wood by insects / organisms and geological factors ( heat , rain , damp ) .
At the present time , wood preservation measures perceived very important by every wearer . Can be interpreted as an act of preservation activities to extend the service life of wood chemistry and physics both by increasing resistance to insect , flower – shrinkage due to changes in water content , and so on .
This time we will discuss how the method and manner of wood preservation . It will be very useful for you who wrestle wooden building in the world . Because the timber , especially a particular class , would be stronger if preserved in the right way , and for the long-term impact on the thrifty use of wood that supports green programs .
Before discussing the methods and ways to preserve the wood even further , let’s look first class classification durable wood :
Class Sustainable Wood
Wood categorized into several classes durable :
– Durable Class I ( very durable ) , eg : rosewood , teak
– Durable Class II ( durable ) , eg : Moluccan ironwood , mahogany
– Durable Class III ( less durable ) , eg : rubber wood , pine
– Durable Class IV ( not durable ) , eg : silk tree
– Durable Class V ( extremely durable )
Just wood with durable class III , IV and V was the one that requires preservation , but on certain purposes , part of the sapwood durable timber class I and II also need to be preserved .
Some kinds of wood preservation methods that have been known by the people we are : soaking, hot and cold baths , and the vacuum press . In the area there is no means of vacuum press , cold heat bath method is the most effective method . Immersion pickling process begins with hot and cold soaking the wood in a preservative solution heat ( 80 degrees Celsius to 113 degrees Celsius ) so that the air in the pores of the wood will expand . Wood that has been soaked in hot , then put in a cold preservative solution . The air expands once , then will shrink and draw solution into the wood preservative . Hot and cold immersion process can also be done in a tub / place .
Vacuum press method highly favored for commercial purposes , because it is very efficient and effective ( entry of wood preservatives to be deeper and evenly ) . Wood and preservative solutions put in iron horizontal cylinder , with a certain pressure ( up to 10 atm ) preservative solution is forced into the wood . The amount of applied pressure and duration of suppression is strongly influenced by the type of wood and material preservative . In this method , the technical term is a full – cell and empty – cell process process . Full – cell process method has greater penetration as a preservative will fill the wood cell cavities in full . While the method of empty – cell process , no preservative to enter the cell cavities but only on the walls of the cell alone .
Protection Against Insects and Termites
One of the wood destroying insect damaged wood with broad power is termites . Termites are insects that live in colonies . Termites are divided into three types: subterranean termites , dry wood termites and damp wood termites . Subterranean termites usually become a very serious threat to the construction of buildings and equipment made of wood .
Protection of buildings against termites can be done by spraying the material ternitisida on the ground when the building will be erected and the preservation of wood components . At this time termiticide materials have been produced in several trademarks . Hali to consider in the selection of termiticide is certainty not pollute the environment and not harmful to living things other than termites . Wood preservation can be done using preservatives such as salt dissolves in water and Diffusol Tanalith CB has been produced . This preservative is generally made from copper , chromium , and boron . The wood is preserved with CB diffusol materials will change color to green when dried .
Oh yes , for those of you who do not want to be bothered with crap wood preservation , why did not immediately abandon the use of wood in building materials . And saving the best alternative is to use a lightweight steel frame to frame roof and ceiling , and glass to aluminum frames , doors and windows ( Click Sills and Aluminum Frame , Save and Safe ) . Thus you have been instrumental in efforts to prevent deforestation and green programs . No matter how small your role , would be very valuable for our children .