The chemical used to preserve DuraPine® Heavy Duty™ pressure-treated wood is a mixture of the oxides of copper, chromium, and arsenate known as CCA. The preservative has been formulated to render wood useless as a food substance for termites and fungi while keeping the wood clean, odorless, non-staining, and safe to handle when used as recommended.


In accordance with the label on CCA preservative, CCA treated wood may be produced for the following uses as referenced in the 2001 AWPA standards:


DuraPine HD CCA benefits:

  • C2 - Lumber and Timber (for Salt Water Use)
  • C3 - Piles
  • C4 - Poles
  • C9 - Plywood
  • C14 - Wood for Highway Construction
  • C16 - Wood Used on Farms (Poles, Piles & Posts Used as Structural Members,
  • Fence Posts & Plywood)
  • C18 - Wood for Marine Construction
  • C22 - Lumber and Plywood for Permanent Wood Foundations
  • C23 - Round Poles and Posts Used in Building Construction
  • C24 - Sawn Timber Used to Support Residential & Commercial Structures
  • C25 - Sawn Crossarms
  • ZC28 - Structural Glued-Laminated Members & Laminations before Gluing
  • C30 - Lumber, Timbers & Plywood for Cooling Towers (2002 Book of Standards)
  • C33 - Structural Composite Lumber
  • C34 - Shakes & Shingles