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Re: GBlist: Dangers of CCA Pressure Treated Wood
In a message dated 6/9/97 3:55:34 PM, crkoehn@mailbag.com (Chris & Ruth
Koehn) wrote:
<<We've been considering using some of the native and naturally rot
resistant wood species in place of cca treated wood. My forestry
connections suggest that walnut, certain species of locust, red cedar,
and katalpa are all very rot resistent- in some circumstances as much so
as cca treated wood (my father in law used locust for fence posts on his
farm, which have been in ground contact for 50 years and still look
good). In many instances logs can be had for the trouble of removal here
in Wisconsin. Most of these trees are extremely invasive, and considered
"weeds" by farmers and woodlot owners.
Any experiences with these materials? I know it's a hassle cutting and
sawing and drying.
How about using this ACQ preserve stuff? Anybody tried it?
Chris Koehn
Top Ridge Homes>>
Hi Chris,
Yep. My experience with white locust, arborvitae, red cedar, redwood and
cypress is that they are extremely well protected from fungal breakdown and
insect infestation. I'd like to see programs that grow, transport, machine,
transport and eventually dispose of them managed in ways that minimize
impact. Here's my "yesbuts". None of these trees are weeds. I don't know if
any of them are being managed as a renewable resource. I'd like to hear from
the eco-foresters on that one. Last I knew, cypress was a species at risk
(too bad cause it lasts the best). Working these woods without respiratory
protection will expose you to the natural toxins present in every one of
them. My old partner and I ended up at the emergency room with toxic shock
after three days of working with black walnut. Lastly, locust is damn bear
to saw, plane or sand - a tool eater. - Terry
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