Iroko: Chlorophora excelsa

Distribution

Iroko is native to West and East Africa

Description

Iroko timber is golden/orange – brown, lighter vessel lines can be seen on flat sawn surfaces. Some material may contain large, hard calcium-carbonate deposits in cavities, in the case the wood around them is often darker in colour. The grain is interlocked and sometimes irregular, so the texture is coarse but even. Weight 640 kg/m3; specific gravity .64.

Properties

Iroko is a medium density wood, it has a moderate steam bending classification, with medium bending and crushing strength. It has very low stiffness and resistance to shock loads.

Seasoning

Iroko timber dries quickly and without much degrade. There is small movement in service.

Working

Iroko timber works acceptably well with hand and machine tools. The timber nails, screws and glues well. When the grain is filled an exceptional finish can be attained.

Durability

The Iroko timber is very durable and is extremely resistant to preservative treatments, however the sapwood is permeable.

Uses

Iroko timber is used extensively for boat and ship building as well as interior and exterior joinery.