Recent issues with TBT (tributyl tin) based light organic solvent preservative (LOSP) treated radiata pine framing and plywood

Failure of exterior wall framing and plywood treated with tributyl tin (oxide or naphthenate) (TBT) treated according to Hazard Class 3.1 of NZS3640:2003, or the earlier equivalent Hazard 3 Class of MP3640:1992 in commonly occurring usage situations over approximately the last 10 years is now well documented. In most instances, the causation was readily deducible: […]

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Beagle Consultancy Ltd
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Karori, Wellington 6012
Aotearoa New Zealand