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More on deck-wood fasteners.(Knight Ridder Newspapers)
Byline: Alan J. Heavens
Yes, lumber treated with chromated copper arsenate (CCA) _ used in deck construction for many years _ is no longer being sold for residential use.
And yes, alternative lumber products treated with alkaline copper quaternary (ACQ) or copper azole (CA) are now on the market, sold under a variety of names (ACQ Preserve and NatureWood, among them).
But there are important issues surrounding the new products, too, and you need to be informed before you buy pressure-treated lumber or sign a contract for deck construction or repair.
Some new products, for instance, are treated with sodium borate (sold as Advanced Guard or DuraBora). Unlike ACQ and CA, lumber treated with borates should not come into contact with moisture, and so cannot be used outdoors in decks or as sill plates in home construction.
In addition, unlike ACQ and CA, borates do not bond with wood all that well.
The new treated-lumber varieties cost about 10 percent more than the old lumber _ some say 20 percent more, depending on region _ but the price will likely drop as more ...
- Brown-rot decay of ACQ and CA-B treated lumber.(Technical Note)(alkaline copper...
- Magazine article from: Forest Products Journal Goodell, Barry Jellison, Jody Loferski, Joseph Quarles, Stephen L. June 1, 2007 700+ words
...that some of this treated lumber is being used by...note is to show how ACQ- and CA-B-treated lumber, treated both to...Procedures Nominal 2 by 6 treated lumber was collected from...B = 0.10 pcf, ACQ = 0.25 pcf...
- Nails for ACQ-treated lumber.(Short Reports on Products and Programs)
- Magazine article from: Building Products Herzfeld, Stephanie July 1, 2005 700+ words
Pneu-Fast. Tri-Coat Hi-Galv nails can be used in all pine and yellow pine pressure-treated ACQ lumber. According to the firm, the nails outperform hot-dipped nails and cost less than stainless steel; Tri-Coat nails...
- Sunbelt Forest Products Leads Florida Preserved Wood Market Transition with...
- Press release article from: Business Wire February 12, 2002 700+ words
...arsenic-free Preserve(R) (ACQ preserved wood) and Preserve Plus(R) (ACQ plus water repellent) wood...ve been preserving wood with ACQ now for almost 10 months...manufacturers of high quality pressure treated lumber. It is committed to creating...
- ACQ and aluminum don't mix.(Building Materials)(alkaline copper...
- Magazine article from: Professional Builder (1993) Stromberg, Meghan September 1, 2003 700+ words
...alkaline copper quarternary (ACQ) and copper azole lead the field...in direct contact with pressure-treated lumber, creating a potential for leaks...States have completed the transition to ACQ or other alternatives. The demand...
- Effect of delayed drying time on copper distribution in the annual rings of...
- Magazine article from: Forest Products Journal Li, Gan Nicholas, Darrel D. Schultz, Tor P. March 1, 2006 700+ words
...percent alkaline copper quat (ACQ-C), bagged for various periods...such as alkaline copper quat (ACQ) for residential applications...modified full-cell process, the treated lumber stacks from commercial treating...the copper-rich preservative ACQ-C, and then drying of the...
- Acme ACQ-safe staples.(Anchors/Fasteners--Product Knowledge)
- Magazine article from: Construction Distribution October 1, 2005 700+ words
These staples are safe for use in ACQ-treated lumber. * Stainless steel alloy for corrosion resistance * Sizes to fit most staplers and applications [] INDICATE 188 ON INQUIRY CARD [ILLUSTRATION OMITTED]
- ACQ wood preservative and fasteners--are they compatible?(alkaline copper...
- Magazine article from: Roofing Contractor Panasik, Cheri September 1, 2005 700+ words
...they developed alkaline copper quaternary (ACQ), which is the preferred preservative used today. The main active ingredients in ACQ are copper oxide and a quaternary ammonium...proven to be the most effective so far, ACQ poses its own concerns. Similar to its...
- Treatability of refractory species with amine and amine/ammoniacal formulations...
- Magazine article from: Forest Products Journal Morris, Paul I. McFarling, Shane M. Zahora, Andrew R. October 1, 2002 700+ words
...treating with amine copper quat type D (ACQ-D) and a hybrid amine/ammoniacal copper quat formulation (ACQ-D+), at both ambient and heated temperatures...of each species were treated with CCA, ACQ-D, and ACQ-D+ at ambient temperature...
Source: HighBeam Research, More on deck-wood fasteners.(Knight Ridder Newspapers)