90x19 Manilkara Decking – Premium Dense Hardwood - Random Lengths

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Product Description

90x19 Manilkara Decking is a premium, high-density hardwood decking board designed for Australian outdoor conditions. Known for its rich red-brown tones (similar to Jarrah), Manilkara offers excellent durability, strength, and long-term performance. It is ideal for residential and commercial decking, delivering a modern wide-board finish with fewer joins.

Dimensions & Profile

• Size: 90mm (width) x 19mm (thickness)
• Length: Random or set lengths (typically 1.8m – 5.7m)
• Profile: Pencil round / eased edge
• Finish: Dressed all round (DAR)
• Moisture Content: 12% – 18% (air-dried or kiln-dried depending on supply)

Timber Properties

• Species: Manilkara spp.
• Common Trade Names: Pacific Jarrah / Red Hardwood
• Durability Class (Above Ground): Class 1
• Durability Class (In-Ground): Class 2
• Density: Approx. 900–1100 kg/m³
• Janka Hardness: ~9.0 – 11.0 kN
• Termite Resistance: High

Performance Characteristics

• Extremely dense and hard-wearing
• Excellent resistance to rot, decay, and insects
• Suitable for high-traffic areas and commercial use
• Rich natural colour with minimal knots (Select/Standard grades vary)
• Long lifespan in exposed environments

Installation Guidelines

• Joist Spacing:
  • 450mm centres (residential)
  • 400mm centres (commercial)
• Fixing:
  • Pre-drilling essential due to high density
  • Use 304/316 stainless steel screws
• Board Spacing:
  • 4–6mm recommended
• End Sealing:
  • Strongly recommended to prevent splitting

Applications

• Residential decking
• Commercial decking & boardwalks
• Pool surrounds
• Pergolas & screening
• High-end architectural projects

Compliance & Standards

• AS 5604 – Timber Durability
• AS 1684 – Timber Framing
• AS 3959 – Bushfire Construction (subject to design & BAL rating)

Storage & Handling

• Store undercover, flat, and well-supported
• Protect from moisture prior to installation
• Allow acclimatisation before fixing

Maintenance

• Oil before installation for best results
• Recoat every 6–12 months depending on exposure
• Clean regularly to maintain colour and performance

Notes

• Colour variation is natural (red to dark brown tones)
• High density may blunt tools faster than softer hardwoods
• Premium alternative to Merbau with similar or higher durability