WHY IS OAK SO SUITABLE FOR Garden FURNITURE?
Oak is a perfect timber to use for garden furniture as it is so durable and impermeable, which is why it has been used for centuries to build such things as ships, churches and barrels. The reasons behind oak’s wonderful durability are scientific, so we will have to dig into the biology of the tree to understand.
The cells of the tree get sealed by balloon like growths called tyloses, closing the ‘open pores’ and rendering the wood almost completely impermeable to any liquid and air. This tends to happen as the sapwood (the living outer rings of the tree) transitions to the heartwood (the dead, inner rings of the tree), although tyloses can be found in the sapwood.
Oak has high levels of tannic acid, commonly known as tannin and is a natural preservative and pesticide. It is well known for its usage to tan animal hides into leather.