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More info about Grey Box Decking

  • Class 1 durability – expected service life of 40+ years.
  • Very high hardness (approx. 15kN Janka), making it resistant to wear and dents.
  • Colour tones range from pale honey through to nutty browns with a fine cathedral grain.
  • Performs well in high-traffic, coastal, or fully exposed environments.
  • Boards are factory-oiled to support acclimatisation and reduce initial maintenance.
  • Sustainably sourced Australian hardwood – never rainforest timbers such as Kwila.
  • Available in standard decking profiles (commonly 135 × 19 mm and 86 × 19 mm).
  • Can be left to weather naturally to silver-grey, or re-oiled every 12–18 months to maintain colour.

Grey Box Decking

135 x 19

Intergrain Natures Oil - Natural Tint

Grey Box Decking

135 x 19

Factory Coat WOCA Oil

Grey Box Decking

135 x 19

Factory Coat WOCA Oil

Grey Box Decking

135 x 19

RAW - NO COATIN

FAQ

Grey Box is a very dense, highly durable Australian hardwood (Class 1 durability, Janka ~15 kN). Its strength, stability, and fine cathedral grain make it an excellent choice for durable and stylish decking.

With proper installation and basic care, Grey Box decking can deliver 40 years or more of performance—thanks to its Class 1 durability rating, one of the highest available.

Yes. Grey Box ages naturally to a silvery-grey patina if left untreated. To maintain its original warm tones, apply a penetrating oil periodically.

Yes. Like all LMA Timber decking, our Grey Box is responsibly and sustainably harvested—unlike rainforest species such as Kwila.

Absolutely. Grey Box’s density and durability make it ideal for coastal, exposed, or high-traffic environments. It holds screws well, resists cupping, and remains stable under challenging conditions.

We typically supply Grey Box in standard decking profiles such as 135 x 19.  Use our Decking Calculator to help determine lineal metres needed for your project.

  • Supplied factory-oiled to assist initial acclimatisation.
  • Re-apply penetrating oil every 12–18 months to preserve colour and protection.
  • Regularly clear debris and clean gently to avoid surface mould and staining. For a detailed guide, see our Installation & Maintenance Guide.