Postsaver, the manufacturer of ground-line barrier sleeves for timber fenceposts/stakes, has announced results of a 25-year field test conducted by the BRE (Building Research Establishment).
Using EN252:2014 – the European Standard for evaluating the effectiveness of wood preservatives in ground contact – researchers are said to have found that Postsaver’s dual-layer ground-line barrier sleeves, when used with a mild dip preservative treatment, showed zero failures after nearly 25 years of continuous in-ground exposure.
The field test compared preservative dip treated stakes and preservative dip treated stakes fitted with Postsaver sleeves. The BRE used its Notional Mean Decay Rating (NMDR) system—a visual inspection methodology defined in EN252—to assess performance
“This is a major milestone for us,” said Richard George, CEO of Postsaver.
“To see our product perform so well under long-term, independent scrutiny validates everything we’ve worked toward.”
“We believe these findings will help open new doors for collaboration within the wood protection industry and inspire greater confidence in wood as a long-lasting, sustainable construction material.”
The BRE used its Notional Mean Decay Rating (NMDR) system – a visual inspection methodology defined in EN25 – to assess performance. Postsaver’s protected stakes achieved superior results. All test stakes have since been returned to the field for possible future monitoring.
Postsaver has been operating for over 30 years.
