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More info about Iron Bark Decking

  • Class 1 durability – expects a service life of 40+ years.
  • Exceptional hardness (~14 kN Janka), making it highly dent- and wear-resistant.
  • Natural fire resistance with a BAL-29 rating.
  • Rich colour palette—from honey reds through deep browns to soft greys.
  • Interlocked or textured grain adds architectural character.
  • Performs exceptionally well in high-traffic, coastal, fire-prone, or exposed sites.
  • Boards are factory-oiled to help acclimatise and reduce initial maintenance.
  • Sustainably sourced—no rainforest species such as Kwila are used.
  • Available in standard decking profiles (e.g., 86×19 mm, 135×19 mm).
  • Oiling every 12–36 months helps preserve the timber’s richness—uncoated boards will slowly weather to a silvery patina.

GREY IRON BARK

135 X 20

FACTORY COAT - INTERGRAIN

GREY IRON BARK

135 X 20

INTERGRAIN NATURES OIL - NATURAL TINT

GREY IRON BARK

135 X 20

FACTORY COAT - INTERGRAIN

GREY IRON BARK

135 X 20

INTERGRAIN NATURES OIL - NATURAL TINT

Grey Iron Bark Decking

FAQ

Iron Bark offers a combination of strength and longevity few other hardwoods can match. With a Janka hardness of ~14 kN, it resists dents and wear in high-traffic areas. Its BAL-29 fire rating makes it suitable for bushfire-prone regions, while its Class 1 durability ensures a service life of 40+ years when maintained correctly. Add in rich colour variation and sustainable sourcing, and Iron Bark is one of the most reliable choices for New Zealand decks.

With proper install and maintenance, Iron Bark decks can easily last 40+ years, thanks to its Class 1 durability and natural resistance to decay and pests.

Yes Iron Bark is fire-resistant. It carries a BAL‑29 fire rating, making it a smart choice for bushfire‑prone and high‑risk areas.

Iron Bark’s hues range from warm honey and reds to deep browns and soft greys. Over time, weathering may soften these tones to a subtle patina.

Once installed, it demands minimal upkeep. Factory‑oiled boards benefit from follow‑up oiling every 12–36 months.

Yes. LMA Timber sources Iron Bark from responsibly managed forests in Australia—avoiding rainforest species like Kwila.

Typical profiles include 135 x 20mm to 135 x 32, though availability may vary. Use our Decking Calculator to help estimate lineal metres required.