Which is the best decking timber

By August 7, 2015Uncategorized

There is no perfect timber for decking, however below is some of the “Pro’s and Con’s we have encounted of the more popular species

Name of timber





  • Durable/strong
  • Stable/minimal swelling/movement
  • Smooth surface
  • Fire resistance
  • Leaches tannins until sealed
  • Enviomentally not popular as there has (in the past) been widespead illigal felling in Asia
  • S.E Asia

Spotted Gum

  • Beautiful looking grain
  • Quality look and feel
  • Often attracts moisture and mould
  • Prone to rot in lighter heartwood areas
  • Heavy
  • Coatings tend to need to be re-applied more often than other wood
  • Australia


  • Light colour
  • Often can be prone to splitting/cracking/twisting
  • Can leach black/brown tannins
  • Grain is easily raised
  • Australia


  • Light colour/great looks
  • Durable
  • Not as durable as merbau
  • Australia


  • Comes in grey/red/brown hues
  • Attractive grain, quality feel
  • Very dense
  • Heavy
  • Often expensive
  • Australia

Northern Box/Forest Reds

  • Interesting mix of grain and colours
  • Does not leach tannins as much as other wood
  • Not as durable as some other hardwoods
  • Can easily absorb moisture and cup/swell
  • Australia

Treated Pine

  • Value for money
  • Plantation grown so enviomentally friendly
  • Light in colour and weight
  • Easy to sand/cut
  • Uneven grain, density and knots
  • Can look and feel budget focussed
  • Sometimes has the green treatments in timber
  • After sanding tends to easily have raised grain
  • Australia but often NZ


  • Enviomentally friendly
  • Interesting look
  • Different
  • Actually a grass not a timber
  • Highly problematic
  • High sugar content means mould problems
  • Absorbs moisture easily and easily swells
  • Man-made with resins means inconsistent quality from different suppliers
  • China