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Jarrah - Western Australian
Red Timber Species
Species Name: Jarrah
Botanical name(s): Eucalyptus marginata
Size and location information: Jarrah is a large sized hardwood found only in the south west of
Western Australia. It is Western Australia’s principal tree in terms of both the extent of forest and in the
versatility of its timber.
The bark is rough, covering the whole trunk to the smallest branches and is similar to that of the
stringybarks.
Description: The heartwood varies from rich reds to deep browns, with sapwood being a clearly
distinguished pale yellow. The texture is course and generally straight grained although some
interlocked grain may feature.
Density: Green: 1100kg/m3 Dry: 850kg/m3
Janka Hardness Rating: Green: 5.7, Dry: 8.5
Shrinkage: 5% Radial, 7.4% tangential
Durability: In ground: Class 2 Above ground: Class 2
Lyctids Susceptibility: Yes
Termite Resistance (AS3660): Yes
Strength Group: S4/SD4
Fire Hazard properties:
Ignitability: 13
Spread of flame: 6
Smoke Development: 3
Workability
The material works well.
Uses:
Flooring, joinery, panelling, sleepers, poles and piles, heavy construction and domestic structural
framing.
Availability:
Becoming less as Jarrah forests are being protected.
Architraves and Skirting
Huge range of profiles and sizes available
Milano Range
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