Skip to Main Content
Treatability of SPF framing lumber with CCA and borate preservativesAuthor(s): Cherilyn Hatfield
Source: Wood and fiber science. Vol. 37, no. 4 (2005): pages 605-614.
Publication Series: Miscellaneous Publication
PDF: View PDF (260 KB)
DescriptionThere is increasing interest in preservative pressure-treatment of framing lumber to prevent attack by decay fungi and insects. However, the Spruce– pine–Fir species group that is often used in framing construction can be difficult to penetrate with preservatives. We compared solution uptake and penetration of boron and copper from a borax–copper (BC) preservative to that of boron in a disodium octaborate tetrahydrate (DOT) treatment and copper in a chromated copper arsenate (CCA) treatment. For all wood species, average solution uptake was consistently greater with the DOT solution than with the BC or CCA solution. Average boron penetration with DOT was also greater than that for any BC solution. Immediately after treatment, boron penetration with DOT exceeded 10 mm in at least 80% of specimens, indicating that the treatment could meet American Wood Preservers’ Association (AWPA, 2003) penetration standards. Following a 2- week diffusion period, boron in BC treatments also met or exceeded AWPA standards in most cases. Copper penetration was much lower than boron penetration and did not meet AWPA standards in any species. Collapse was noted in some specimens treated with heated BC and DOT solutions.
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationHatfield, Cherilyn. 2005. Treatability of SPF framing lumber with CCA and borate preservatives. Wood and fiber science. Vol. 37, no. 4 (2005): pages 605-614.
KeywordsSpruce–pine–fir, treatability, preservative, boron, copper, DOT, CCA
- Formosan and native subterranean termite attack of pressure-treated SPF wood species exposed in Louisiana
- Boron Diffusion in Surface-Treated Framing Lumber
- Decay of Fire-Caused snags in Ocala Sand Pine
XML: View XML