Our LONGLAST range is recommended for any ground contact product because it is treated to the British Standard BS8417. It has a 15 year life expectancy. Only correctly prepared timber will reach our Longlast standard treated to usage class 4 (UC4). All of our Timber is treated with Wolmanit® CX
SPECIES: Only Redwoods are used for the Longlast range due to their natural durability.
DRYING: Timber is naturally air dried to 28% moisture content. The pressure treatment is then absorbed and retained through the sapwood to the durable heartwood.
PREPARATION: Layers of timber are separated by spacers which allow for consistent drying and treatment right through the pack.
The Longlast range is the correct choice to ensure a quality ground contact product. Choosing the right product reduces ta lifetime of costs. A small premium reduces the very real risk of premature failure and expensive re-installation costs.
All of our timber is assured as Grown in Britain and sourced as locally as possible, mainly in the South West of England. 
Remember! Treat any cut/drilled areas of the LONGLAST products as this will affect the performance of the product in invalidate the warranty.