Iroko

Latin name: Chlorophora excelsa, Chlorophora regia

 

Also known as: odum (Ghana and Ivory Coast), mvule (East Africa), kambala (Zaire), bang (Cameroons), moreira (Angola), tule, intule (Mozambique)


Wood Type:

Hardwood

Durability:

Durable

Treatability:

Extremely difficult

Moisture Movement:

Small

Density (mean, Kg/m³):

660

Texture:

Medium

Availability:

Available at specialist timber merchant

Price:

Medium

Chemical Properties:

Occasional deposits of stone may occur

Use(s):

Joinery - Exterior, Joinery - Interior, Cladding, Decking

Colour(s):

Yellow brown

Notes on terms used navigation-arrow

Introduction

Formerly known as Milicia excelsa Benth. and Hook f., and Milicia regia A. Chev.

 

Environmental

Listed in the IUCN Red List of Threatened Species as LR – Lower Risk (near threatened): close to being classed as Vulnerable. Also meets CITES Appendix II criteria. [Information courtesy of Timbmet Ltd]

 

Distribution

C. excelsa has a wide distribution in tropical Africa, from Sierra Leone in the west, to Tanzania in the east. C. regia is confined to West Africa, where it occurs from Senegal to Ghana. There does not appear to be any significant difference between the timber of the two species.

 

The tree

C. excelsa attains very large sizes, reaching 45m or more in height and up to 2.7m in diameter. The stem is usually cylindrical and mostly without buttresses. It occurs in the rain, and mixed deciduous forests.

 

The timber

When freshly cut, or when unexposed to light, the heartwood is a distinct yellow colour, but on exposure to light it quickly becomes golden-brown. The sapwood is narrow, being about 50mm to 75mm wide, and clearly defined. The grain is usually interlocked and the texture is rather coarse but even, and the wood weighs on average 660 kg/m³ when dried. Large, hard deposits of calcium carbonate called 'stone' deposits, are sometimes present in cavities, probably as a result of injury to the tree. They are often enclosed by the wood and not visible until the time of sawing, though the wood around them may be darker in colour, thus giving an indication of their presence.

 

Drying

The timber dries well and fairly rapidly, with only a slight tendency to distortion and splitting.

 

Strength

Iroko has excellent strength properties, comparing well with teak, though weaker in bending and in compression along the grain.

 

Working qualities

Medium to difficult - Iroko works fairly well with most tools, though with some dulling effect on their cutting edges, especially when calcareous deposits are prevalent. On quarter-sawn stock, there is a tendency for grain to pick up due to interlocked grain, and a reduction of cutting angle to 15° is usually necessary to obtain a smooth surface. An excellent finish can be obtained if the grain is filled. It takes nails and screws well, and can be glued satisfactorily.

Suppliers

A C Timber Solutions Ltdnavigation-arrow

Ely

Abbey Woodsnavigation-arrow

Dublin 13

Beaumont Forest Products Limitednavigation-arrow

High Wycombe

Border Hardwood Ltdnavigation-arrow

Wem

Brooks Bros (UK) Limitednavigation-arrow

Maldon

Capricorn Eco Timbernavigation-arrow

Stafford

Chadwicks (Mowbray Drive) Limitednavigation-arrow

Blackpool

Champion, A W Limitednavigation-arrow

New Malden

Cranwood Industriesnavigation-arrow

Warrenpoint

E O Burton & Co Limitednavigation-arrow

Brentwood

E. y F. Gamiznavigation-arrow

Sta. Cruz De Campezo (?lava)

Enfield Speciality Doorsnavigation-arrow

Enfield

Fleming Buildbasenavigation-arrow

Aberdeen

Gilmour & Aitkennavigation-arrow

Alexandria

Gripdecknavigation-arrow

Colchester

International Timbernavigation-arrow

Manchester

iWood Timber Ltdnavigation-arrow

Stafford

James Latham plcnavigation-arrow

Hemel Hempstead

Mid-Sussex Timber Co Limitednavigation-arrow

Forest Row

Millworks Timber Specialistsnavigation-arrow

Bottisham

Morgan Timbernavigation-arrow

Rochester

NHG Timber Limitednavigation-arrow

Croydon

Quinn Hardwoods Ltdnavigation-arrow

Dublin

Ramsay Timber Limitednavigation-arrow

Wigan

Siero Lam SAnavigation-arrow

Arguelles

Silva Timber Products Limitednavigation-arrow

Widnes

Thorogood Timber Limitednavigation-arrow

Colchester

Timber Focusnavigation-arrow

Manchester

Timbersource Limitednavigation-arrow

Waterlip

Timbmetnavigation-arrow

Stanford in the Vale

Vincent Timber Ltdnavigation-arrow

Birmingham

W. L. West & Sons Ltdnavigation-arrow

Petworth

Watford Timber Co Limitednavigation-arrow

Watford

Suppliers

Watford Timber Co Limitednavigation-arrow

Watford

W. L. West & Sons Ltdnavigation-arrow

Petworth

Vincent Timber Ltdnavigation-arrow

Birmingham

Timbmetnavigation-arrow

Stanford in the Vale

Timbersource Limitednavigation-arrow

Waterlip

Timber Focusnavigation-arrow

Manchester

Thorogood Timber Limitednavigation-arrow

Colchester

Silva Timber Products Limitednavigation-arrow

Widnes

Siero Lam SAnavigation-arrow

Arguelles

Ramsay Timber Limitednavigation-arrow

Wigan

Quinn Hardwoods Ltdnavigation-arrow

Dublin

NHG Timber Limitednavigation-arrow

Croydon

Morgan Timbernavigation-arrow

Rochester

Millworks Timber Specialistsnavigation-arrow

Bottisham

Mid-Sussex Timber Co Limitednavigation-arrow

Forest Row

James Latham plcnavigation-arrow

Hemel Hempstead

iWood Timber Ltdnavigation-arrow

Stafford

International Timbernavigation-arrow

Manchester

Gripdecknavigation-arrow

Colchester

Gilmour & Aitkennavigation-arrow

Alexandria

Fleming Buildbasenavigation-arrow

Aberdeen

Enfield Speciality Doorsnavigation-arrow

Enfield

E. y F. Gamiznavigation-arrow

Sta. Cruz De Campezo (?lava)

E O Burton & Co Limitednavigation-arrow

Brentwood

Cranwood Industriesnavigation-arrow

Warrenpoint

Champion, A W Limitednavigation-arrow

New Malden

Chadwicks (Mowbray Drive) Limitednavigation-arrow

Blackpool

Capricorn Eco Timbernavigation-arrow

Stafford

Brooks Bros (UK) Limitednavigation-arrow

Maldon

Border Hardwood Ltdnavigation-arrow

Wem

Beaumont Forest Products Limitednavigation-arrow

High Wycombe

Abbey Woodsnavigation-arrow

Dublin 13

A C Timber Solutions Ltdnavigation-arrow

Ely