Planed Tongue & Groove UC3u Treated Jointed Tanalised Timber Cladding FSC 20 x 120mm

Tanalised Timber is a type of wood that has been treated with a special kind of preservative called "Tanalith E". This preservative penetrates deeply into the wood, protecting it from decay and wood-loving pests that can be potentially damaging. All sizes are nominal. Take 5mm off edges for true size.