Friday, October 9, 2009

New Treatment for Wood Could Be Useful in WV

Ecogeek reports a new process for treating wood so that they better stand up to outside use as decking, siding, etc. At a time when the WV wood product industry is struggling, anything that would help increase the use of WV wood rather than tropical hardwoods is a hopeful development. The process, called kebonization,

" . . . is similar to pressure treating wood (which is another way to make soft woods usable for exterior use). But, instead of soaking the wood in toxic chemicals like chromated copper asrsenate (CCA, which is now banned for most uses in the US and the EU) or alkaline copper quaternary compounds (ACQ, the most widely used replacement for CCA after the ban), it is instead soaked in furfuryl alcohol, a waste byproduct from sugar cane which is also sometimes used as a food additive. There are no special handling requirements or precautions needed to deal with waste from this wood, and it can be disposed of just like any other untreated wood.
During the kebonization process, the alcohol becomes a resin that reinforces the cells of the wood. The result is a wood with excellent outdoor exposure tolerance like teak or mahogany, but with a harder surface than many of the tropical woods that it replaces. The wood also naturally fades to a silvery-grey color much like those tropical woods, as well."

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