Quote:
Originally Posted by GBAR in WA
Dave, read this for your son:
G
|
These are being used as the base for a retaining wall by my driveway
I'm not worried about them, reg PT will go on top
Without someone actually coming & testing every PT piece of lumber there is no real way to know what is what
Old PT lumber was still sold until it ran out, it was never "recalled"
I guess the reason they couldn't recall it is that it would bankrupt a lot of business
Nice that they just leave this stuff & still allowed the old stock to be sold until it ran out

As such if someone found some on the back corner of a warehouse it could still be sold
Not that unlikely considering all the old stock that is sold
And actually wood that is over 10-15 years old is supposed to be better as it has already released the arsenic - as long as you don't cut it
I imagine there are plenty of PT decls that were built 2004 & prior that are still standing
My deck is the newer wood, no other deck has been on this house
Quote:
|
University of Florida study released last year found that CCA-treated decks caused surface soil arsenic concentrations underneath the decks to be 2000% higher, on average, than normal.
|
Quote:
|
You should NEVER use bleaches, deck cleaners or brighteners on old CCA-treated wood because they oxidize the chromium-3 that's already in CCA-treated lumber, turning it into the highly carcinogenic chromium-6.
|