New Zealand timber supplier Robert Lynch intends to run a six month education programme to spell out the advantages of alternative timber treatments to CCA.
Mr Lynch saw warning signs three years ago that CCA would be labelled a health and environment risk and set up a mill providing alternatives in Rotorua.
Since then the US, Canada and the European Union have banned or restricted the use of arsenic-treated timber and it is likely other countries will follow suit.
The downside of Tan E is that it costs about 10% more than CCA timber, but Mr Lynch expects the cost to reduce through increased supply.
Meanwhile he plans to run a training course aimed at merchants and local authorities to detail the advantages of CCA alternatives.