A laboratory bioassay and subsequent field trial was undertaken to determine the termiticidal effectiveness of a Laminated Strand Lumber (LSL) composite when treated with Borogard® ZB. The bioassay and field trial were conducted against two of Australia’s most economically important species of termite, Mastotermes darwiniensis and Coptotermes acinaciformis. Against both species of termite, LSL test specimens treated with an analysed retention of 2.06% m/m Zinc Borate performed as well as test specimens treated with an approved commercial reference preservative (permethrin). Furthermore, results indicated that the Borogard® ZB-treatment of LSL was resistant to water leaching. The studies demonstrated a strong correlation between the results obtained from the laboratory and those obtained from the field methods of evaluation.

Download document (52 kb)
free for the members of IRG. Available if purchased.

Purchase this document