Our LONGLAST range is recommended for any ground contact product because it is treated to the British Standard BS8417 and has a 15 year life expectancy.Only timber prepared correctly will reach our Longlast standard treated to usage class 4 (UC4)
SPECIES: The Longlast range only uses Redwoods due to its natural durability.
DRYING: By naturally air drying the timber 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 to 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 the lifetime 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. 
To identify a LONGLAST products a stainless steel nail in put into one end. It will identify a Charltons product as shown below.
Please remember to treat any cut/drilled areas of the LONGLAST products as this will affect the performance of the product in invalidate the warranty.