Bangkirai Decking

Bangkirai hardwood decking for commercial projects, public installations, and large-scale export. Durable, termite-resistant, and ready for tough climates.

Shorea laevis / Shorea spp., commercially known as Bangkirai or Yellow Balau, is one of the most trusted hardwoods for outdoor decking. Sourced from Indonesia and Southeast Asia, Bangkirai is known for its exceptional strength, natural durability, and resistance to decay — making it ideal for heavy-duty decks, public infrastructure, and tropical climates.

Common Decking Sizes

European Standard Sizes (in cm)

• 2.1 × 14.5 × 180–480 cm

• 2.8 × 14.5 × 180–480 cm

• 4.5 × 14.5 × 180–480 cm

U.S. Nominal Sizes (in inches)

• 5/4″ × 6″ (Actual: ~1″ × 5.5″)

• 2″ × 6″ (Actual: ~1.5″ × 5.5″)

• 1″ × 4″ (Actual: ~0.75″ × 3.5″)

• 1″ × 6″ (Actual: ~0.75″ × 5.5″)

Lengths available from 8 to 20 ft (≈ 2.4 to 6.1 m)

Technical Specifications

• Botanical name: Shorea laevis, Shorea spp.

• Density (12% MC): ~850–950 kg/m³

• Durability class (EN 350): Class 2–4 (durable to moderately durable)

• Use Class (EN 335): Class 4 (in-ground / freshwater contact)

• Shrinkage (tangential/radial): 7.3% / 4.2%

• Stability: Moderately stable

• Crushing strength: ~85 MPa

• Modulus of elasticity: 23,000 MPa

• Fire classification (EN 14081): D-s2, d0 (thickness > 22mm)

Processing & Installation

• Drying: Slow; pre-drying recommended before kiln

• Machining: Fairly easy with carbide tools; interlocked grain may cause tear-out

• Fixing: Pre-drilling recommended; stainless steel fasteners ideal

• Finishing: Can be oiled or left unfinished to weather naturally

Advantages

• Naturally resistant to fungi, termites, and borers

• Long lifespan in tropical and humid conditions

• FSC® available on request

• Suitable for public spaces, resorts, terraces, boardwalks, and residential decks
  

📞 Need a custom format or large-volume quote?

[→ Contact us for tailored specifications or export pricing.]

FAQs

Is Bangkirai suitable for outdoor use in harsh climates?

Absolutely. Bangkirai (Yellow Balau) is a dense, tropical hardwood naturally resistant to decay, termites, and severe weather conditions. It performs exceptionally well in both tropical humidity and cold climates.

Does Bangkirai crack or warp over time?

When properly kiln-dried and installed with correct spacing, Bangkirai remains dimensionally stable. Its high density and tight grain structure limit movement, even under strong sun exposure or seasonal humidity changes.

How much maintenance does Bangkirai decking require?

Minimal. Occasional cleaning and optional oiling will help preserve its natural golden hue. If left untreated, it will develop a silver patina over time — a cosmetic change without affecting durability.

Can Bangkirai be used for commercial or high-traffic projects?

Absolutely. Thanks to its mechanical strength and wear resistance, Bangkirai is widely used for resorts, boardwalks, public spaces, hotels, and large-scale residential developments.

What finishes and profiles are available?

We offer Bangkirai decking in smooth or reeded profiles, with options like E4E and S4S. All boards are kiln-dried, FSC certified, and milled to export-grade standards. Custom sizing and profiles are available for bulk orders.

Can you handle high-volume and wholesale distribution?

Yes. We actually specialize in volume order. We supply both local and international distributors with full-container volumes. Standard sizes and mixed lengths are available, and all shipments meet export standards and certifications.

Is Bangkirai sustainably sourced?

Our Bangkirai is sourced from legally harvested forests in Indonesia and supplied with SVLK documentation. FSC-certified options are available upon request, ensuring traceability and responsible forest management.

Is Bangkirai resistant to insects and termites?

Yes. Bangkirai has natural resistance to termites and wood-boring insects, which is one of the reasons it is widely used for public decking, bridges, and heavy-duty outdoor structures.