Afrika
Iroko
Tree Data
The tree is reported to attain heights of up to 160 feet (49 m) and trunk diameters of up to 120 inches (300 cm).
The boles are reported to be found occasionally over small buttresses and are straight, cylindrical, and clear to about 80 feet (24 m).
Sapwood Color
The sapwood is yellowish-white in color.
Heartwood Color
The heartwood is golden-orange to brown in color. Lighter vessel lines are conspicuous on flat sawn surfaces. Large deposits of calcium carbonate, with darker colored surrounding material are usually present. Yellow bands of soft tissue are reported to form a zig-zag pattern on all surfaces.
Grain
The grain is moderately interlocked.
Texture
Texture is reported to be moderately coarse and even.
Luster
Iroko is reported to be mildly lustrous.
Movement in Service
Properly seasoned timber is reported to be dimensionally stable, and retains its shape well after manufacture.
Natural Durability
The heartwood is reported to be naturally resistant to decay, but is susceptible to attack by dry-wood insects. The sapwood is susceptible to attack by powder-post beetle, but has been reported to be highly resistant to termite attack in Africa. Resistance to Impregnation The heartwood is reported to be highly resistant to impregnation, but the natural durability of the wood is reported to make preservative treatment unnecessary in most cases.
Weathering Properties
The material is reported to possess adequate weathering properties to allow it to be used in exterior applications.
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