CCA or ACQ Pressure Treated Lumber

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Old 04-13-06, 05:06 PM
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CCA or ACQ Pressure Treated Lumber

I have been reading up on CCA and ACQ pressure treated lumber and it seems as though we are moving toward the latter. If I order in PT lumber from a depot which chemical treatment will it most likely have recieved? By the sounds of it ACQ lumber is taking less scrutiny from the health department.
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Old 04-13-06, 05:19 PM
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CCA or ACQ Pressure Treated Lumber

Both just slow the deterioration process.

CCA (chromated copper arsinate) is nasty stuff and is either rare or banned. Some dump sites will not take it.

ACQ is a newer product/process that is supposed to be softer and gentler. This is the one you will usually find.

Since you can get 100% penetration, cuts are a potential problem.

Dick
 
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Old 04-14-06, 04:46 PM
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To further Dick's comments, be sure to use the newer "approved" fasteners and joist hangers with the ACQ. You probably won't be able to find the old ones anyway. Just a word of caution.
 
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