Spotted Gum

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The Australian species of Spotted Gum (Corymbia Maculata) grows in the coastal areas from the border of New South Wales and Victoria all the way up to Maryborough in Queensland. It may be called by various other names such as Lemon–scented gum, Spotted Iron Gum, Large-leaved Spotted Gum, Mountain Spotted Gum or Red Spotted Gum.

Spotted Gum usually grows with a thick, straight trunk, up to 70 meters in height. The bark of this tree is smooth and the colour could vary between white, grey or pink.

The colour of the Heartwood ranges from pale brown to deep brown. The Sapwood is much paler than the Heartwood, almost white in fact, and the texture is moderately coarse and greasy to the touch. The grain is wavy and varies with ribbon like fiddleback shapes.

Timber Attributes of Spotted Gum include:

  • Extremely hard and durable
  • Dries easily
  • Has a citrusy scent
  • Resistant to decay
  • May check on tangential surfaces
  • Steam bending may work on straight-grained surfaces
  • Easily worked by machine or hand tools
  • Adapts easily to Stains, Paints and Finishes
  • Excellent with Paints
  • Easily accepts finishes
  • Easy to nail
  • Does not change colour by oxidation or light exposure
  • Unseasoned wood may be affected by corrosion or aluminium nails
  • The average hardness rating of Spotted Gum is Dry: Very Hard.

Spotted Gum Sapwood is susceptible to Lyctid infestation. It is however, resistant to termite and has a Class 4 rating for resistance to marine borer infestation.

Natural durability of Heartwood Above Ground is rated Class 1 and the Natural durability of Heartwood In-Ground contact is Class 2.

Spotted Gum is mainly used in:

  • Decking
  • Flooring
  • Furniture
  • Construction
  • Heavy Engineering Construction
  • Shipbuilding
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