Durepox

When Pete de Roo made his first lab sample of Durepox in November 1983 tucked away in a dilapidated laboratory, little did he realise that his new development would one day become world famous. The first batch made at the Resene Automotive Ranui factory in April 1984 was just 100 litres.

Since those humble beginnings, Durepox has fulfilled the demanding needs of painters in the signage, trucking, industrial coatings and floor covering markets for many years, but nobody would ever have dreamt of its success among the international racing boat fraternity.

Durepox has figured strongly on the hull and deck of contestants in the Whitbread and previous America's Cups. The pinnacle of the product's fame was undoubtedly this year's America's Cup as seven of the twelve challengers in the Louis Vuitton Cup and the America's Cup defender all used Durepox.

Durepox is an epoxy urethane with amazing adhesion to carbon fibre, fibreglass and wood, which can be applied without sanding between coats. While developed as a primer, Durepox is used as a topcoat on racing boats as it has excellent water barrier properties and exceptional weather stability. Durepox was tested by the Otago Flume Laboratory and results showed that its satin finish gave a 15% less drag coefficient than a high gloss surface on rowing skulls. On a practical level, painters admire its fast dry properties and sandability after three hours with no shrink back.

Thanks to the Spanish entry DesafÌo Español and Emirates Team New Zealand who forwent the normal sponsorship arrangements that have precluded the promotion of Durepox on America's Cup boats in the past, the humble story of Durepox can at last be shared.