Copper is the fungicide chrome the insecticide and arsenic is the fixing agent that holds the chemicals in the wood.
Treated hardwood sleepers.
Dense tight grained hardwood railway sleepers especially tropical timbers are completely different to light softwood railway sleepers which have to be treated with either creosote or pressure treatment to prevent them rotting and collapsing.
We supply both softwood and hardwood sleepers both treated and untreated as well as new and reclaimed railway sleepers our range of sleepers provide effective solutions for all landscaping projects.
An untreated softwood will last for between three and five years if it sits on the ground whilst treated softwoods can last between 20 and 30 years if they are maintained correctly.
Hardwood railway sleepers are much more durable and naturally longer lasting.
Suregreen timber sleepers are made from treated or charred softwood or untreated oak and are available in two different lengths 1 2m and 2 4m.
This stands for copper chrome and arsenic cca and protects the sleepers from both fungal attack rotting and insect attack termites.
Uk timber limited is one of the largest suppliers of railway sleepers in the uk.
Betimber treated wooden railway sleepers for sale new and old.
Primed treated structural timber.
Incised treated timber sleeper 100mm x 200mm x 2400mm.
Most are treated using the common cca method.
Brown treated log lap railway sleepers uk timber ltd have been pioneering the use of railway sleepers for use in landscaping gardening raised beds etc.
As a rule hardwood oak sleepers tend to last the longest naturally with an expected lifespan of around 100 years.