Sheoak, WA
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Other Names
Casuarina fraseriana
WA sheoak is a hardwood used for flooring, furniture, roofing shingles, turnery and decorative purposes.
WA sheoak is a hardwood that, as its name suggests, grows on the south coast of south-west Western Australia. It is used for flooring and paneling, roofing shingles, furniture, decorative woodwork and turnery, and before the invention of the aluminium cask it was used in the manufacture of beer barrels.
The heartwood of WA sheoak is red-brown and the sapwood is pale yellow. The texture is moderately even and fine, and the grain is straight. The medullary rays are not as prominent as those of river sheoak and rose sheoak.
WA sheoak is easy to work. It is susceptible to lyctid borer.
The timber is available in limited quantities in Western Australia.
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Botanical Name
Allocosuarina fraseriana
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Preferred Common Name
Sheoak, WA
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Species Type
Appearance
The texture of WA sheoak is moderately even and fine, and the grain is straight. It has a red brown heartwood and the sapwood is pale yellow. The medullary rays are not as prominent as those of river sheoak and rose sheoak.
Common Applications
WA sheoak is used for furniture, flooring and paneling, roofing shingles, turning and decorative woodwork.
Common Form
Sawn
Workability
WA sheoak is easy to work.
Origin of Timber
Readily Available
Availability - Further Information
Availability - Further Information
Shrinkage
| Very Low | Low | Medium | High | Very High | |
Tangential : |
4.50% |
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Radial: |
1.20% |
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Unit Movement Tangential: |
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Unit Movement Radial: |
0.13% |
Strength Group 
Very High |
High |
Reasonably High |
Medium High |
Medium |
Reasonably Low |
Low |
Very Low |
|
Unseasoned: |
S1 |
S2 |
S3 |
S4 |
S5 |
S6 |
S7 |
|
|---|---|---|---|---|---|---|---|---|
Seasoned: |
SD1 |
SD2 |
SD3 |
SD4 |
SD5 |
SD6 |
SD7 |
SD8 |
Stress Grade
| Structural No. 1 |
Structural No. 2 |
Structural No. 3 |
Structural No. 4 |
Structural No. 5 |
|
Unseasoned: |
F8 |
F7 |
F5 |
F4 |
|
Seasoned: |
F14 |
F11 |
F8 |
F7 |
F5 |
Density per Standard
Seasoned: |
735kg/m3 |
|---|---|
Unseasoned: |
1120kg/m3 |
Joint Group
Very High |
High |
Reasonably High |
Medium |
Low |
Very Low |
|
Unseasoned: |
J1 |
J2 |
J3 |
J4 |
J5 |
J6 |
|---|---|---|---|---|---|---|
Seasoned: |
JD1 |
JD2 |
JD3 |
JD4 |
JD5 |
JD6 |
Colour
| White, yellow, pale straw to light brown | Pink to pink brown | Light to dark red | Brown, chocolate, mottled or streaky | |
Mechanical Properties
Modulus of Rupture - Unseasoned: |
52 |
|---|---|
Modulus of Rupture - Seasoned: |
98 |
Modulus of Elasticity - Unseasoned: |
9.1 |
Modulus of Elasticity - Seasoned: |
9.4 |
Maximum Crushing Strength - Unseasoned: |
26 |
Maximum Crushing Strength - Seasoned: |
41 |
Impact - Unseasoned: |
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Impact - Seasoned: |
|
Toughness - Unseasoned: |
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Toughness - Seasoned: |
|
Hardness - Unseasoned: |
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Hardness - Seasoned: |
Durability
| Low | Moderate | Reasonably High | High | |
| (0 - 5 yrs) | (5 - 15 yrs) | (15 - 25 yrs) | (more than 25 yrs) | |
In-Ground: |
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| (0 - 7 yrs) | (7 - 15 yrs) | (15 - 40 yrs) | (More than 40 yrs) | |
Above ground: |
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| (0 - 20 yrs, usually < 5) | (21 - 40 yrs) | (41 - 64 yrs) | (More than 60 yrs) | |
Marine Borer Resistance: |
Lyctid Borer Susceptibility: |
Susceptible |
|---|---|
Lyctid Borer Susceptibility - Other: |
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Termite Resistance: |
Not Resistant |
Fire Properties
| 1 - non-combustible | 2 - reasonably non-combustible | 3 - slightly combustible | 4 - combustible | |
Fire Properties Group |
Average Specific Extinction Area: |
<250 |
|---|---|
Bushfire Resistance: |
BAL 12.5 and 19 – Door and window joinery only |
Flooring
Whether for structural or finished flooring applications, timber offers durability, versatility and adaptability. The warmth, strength and natural beauty of timber flooring has proved enduringly popular in a wide variety of interior settings.
Timber flooring is a timeless product, offering a warmth and natural beauty largely unmatched by other flooring options. This article provides an overview of the installation of solid timber strip flooring over bearers and joists, timber based sheet flooring products and concrete slabs. Timber flooring is typically supplied as either solid timber or laminated wood products, made from layers of bonded timber. It fits together with a tongue and groove joint and once in place, is sanded and finished. There is a wide variety of species to select flooring from and the right species for a given application will be dependent on numerous factors. Information relating to species selection, environmental assessment, finish selection and recommended maintenance routines are all provided in this section.
