Preservative-treated particleboards were prepared by using tropical fast-growing albizzia and adding fungicides and insecticides to the adhesive-glue. the physical and biological properties of these boards were evaluated. No significant reduction in bending or internal-bond strength due to incorporation of the chemicals was detected. Treated particleboards effectively resisted attack by Coptotermes formosanus at an active ingredient (a.i.) retention of less than 0.5 kg/m³ for chlorpyrifos, dichlorophenthion and propetanphos in laboratory tests. Although decay was unaffected by incorporating the mixed preservative at the retention levels in this study, boards which contained IF-1000 as a fungicide an an a.i. retention of more than 1.0 kg/m³ showed the possibility of decay resistance.

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