Fixation of CCA and Stabilization of Current Copper Based Preservatives

Course Materials

This module offers information on how the chemicals are “fixed” within the penetrated zone of the wood. The term Fixation applies mostly to the CCA chemical treatment (chromated copper arsenate), whereas stabilization is used for the stabilizing of the newer chemicals in the wood. Both terms deals with the chemicals binding to the wood and becoming as leach resistant as possible. The tests required to determine fixation/stabilization are discussed.