Posted by Billy NY on March 26, 2012 at 11:39:55 from (67.248.100.3):
In Reply to: Treated Lumber/Post posted by JDseller on March 26, 2012 at 08:24:58:
I read that one below too. When I worked for a local lumber yard, I dealt with quite a bit of kiln dried southern yellow pine that was pressure treated with .40% and .60% Chromated Copper Arsenate.
The plants I used to pick up from were in Albany NY, Holbrook Lumber, and a place in Athens NY, which still seems to be in operation.
The athens plant and Holbrook both had giant pressure tanks, they would place units of kiln dried S.Y.P. lumber in these and treat them until .40 % or .60 % of CCA, not sure if any was treated till refusal was mentioned in the below thread on this. These units of lumber were shipped wet, and soaked with CCA, it would crystallize into a blue-ish substance, some pieces were just saturated, leave it in the hot sun and it would warp into a useless piece of wood quickly. I used to haul trailer loads of it, when picking orders in the yard, I always wore gloves.
Holbrook was one of the first treaters according to their site, I have a some of their 6"x6" posts in the ground, that were delivered in the mid 70's and never used til 2006, I've not completed the building yet, plan to soon, the ends are flat and in the weather and are still hard as a rock! I treated the ends with real Creosote (see below photo) before I set em, boy does that stuff reek something awful. The soil is well drained, I'll bet these last a long time yet.
Now after reflecting back and doing some research, it seems OSMOSE, still offers a CCA material, not sure how you can get it though. Used to be OSMOSE and Wolmanized, then of course local plants, though the one near us in Athens was huge.
The links below have some good information about pressure treated wood, take a look might be of interest.
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