Radiata pine sapwood stakes were treated with a range of chemicals, including an ammoniacal copper quaternary ammonium compound (ACQ), a copper-chrome and arsenic (CCA) solution and a CCA-oil treatment, potassium linoleate copper linoleate, a paraffin wax and a proprietary alkyd resin. The effect of these treatments on the extent of water absorption and moisture movement through the stakes was investigated. Results indicate that pre-treatments could affect uptake and flow of water through the wood, which in time could be attributed to the properties of the solutions and whether they had surface active, bulking or water repellent attributes.

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