What are the differences in Treated Pine treatment levels?
Treated Pine is rated in pounds per cubic foot chemical retention. This can be found on the label on the end of the wood. .25 is rated for above ground use such as deck railings, decks and fences. The next level is .40 for ground contact use such as post and retainer wall boards. The highest is .60 for in-ground use such as buried foundations and piers under water. [Back to top] What fasteners do I need for Treated Pine? The new ACQ (Alkaline Copper Quaternary) treated lumber requires stainless steel nails or hot dipped fasteners with a G-185 rating (1.85ounces of zinc per square foot of metal or ASTM A-153-D), to resist the breakdown over time because of the new Acidic preservatives. [Back to top] Is Treated Pine wood treated completely to the center? Most of the treated wood is only treated to a point into the wood and not all of the way thru. This of course varies with the amount of treatment applied and can vary from 1/2″ on up. It is possible for a .60 2×4 to be treated all of the
