Cypress, White

White cypress is a highly durable Australian softwood timber species. It is readily available throughout Australia.

Other Names

Australian Cypress, White Cypress Pine, Murray Pine, Western Cypress, Northern Cypress Pine, Callitris Glauca, Callitris Columellaris, Callitris Hugelii

Botanical Name

Callitris glaucophylla

Common Form
Sawn
Species Type

White cypress is a softwood timber species growing to a height of up to 25 metres and a stem diameter of 0.6 metres. It is commonly found throughout Victoria, western New South Wales and central western Queensland.

In contrast to a creamy-white band of sapwood, the heartwood of this species ranges in colour from light yellow through orange to light brown, with occasional dark brown streaks. Grain is generally straight with a very fine and even texture. The presence of numerous tight knots is a distinctive feature that produces a strikingly decorative figure on exposed faces.

Natural resins in the wood impart a distinctive odour to white cypress and are believed to contribute to the timber's impressive natural durability. Heartwood is resistant to termites. Life expectancy for above ground applications is greater than 40 years and up to 25 years in-ground. Both the sapwood and the heartwood of this species resist impregnation with commercially available preservatives.

In terms of hardness, white cypress is a firm timber (rated 4 on a 6-class scale in relation to both indentation and hand tooling). It can be satisfactorily machined and turned to a smooth finish. Pre-drilling is recommended for hand nailing seasoned timber, although machine nailing with shear-point nails works well. White cypress readily accepts most standard coatings, stains and polishes. Special techniques, such as surface roughening, are required for gluing. 

In its area of natural occurrence, white cypress is commonly found as sawn timber (usually unseasoned) in framework and other aspects of general building construction. More widely, it is used as flooring, cladding and fencing material. Decorative uses of white cypress include quality indoor and outdoor furniture, turnery, joinery, carving, parquetry and linings. Other common applications include oyster stakes and jetty piles in low-salinity environments, as well as beehives.

Shrinkage

Very Low Low Medium High Very High

Tangential :

2.80%

Radial :

2.10%

Unit Movement Tangential:

0.28%

Unit Movement Radial:

0.23%

Strength Group

Very High

High

Reasonably High

Medium High

Medium

Reasonably Low

Low

Very Low

Unseasoned:

S1

S2

S3

S4

S5

S6

S7

S8

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:

F11

F8

F7

F5

F4

Seasoned:

F14

F11

F8

F7

F5

Density per Standard

Seasoned:

700kg/m3

Unseasoned:

850kg/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:

71

Modulus of Rupture - Seasoned:

79

Modulus of Elasticity - Unseasoned:

7.7

Modulus of Elasticity - Seasoned:

9.0

Maximum Crushing Strength - Unseasoned:

40

Maximum Crushing Strength - Seasoned:

53

Impact - Unseasoned:

9.7

Impact - Seasoned:

5

Toughness - Unseasoned:

Low - up to 15 Nm

Toughness - Seasoned:

Low - up to 15 Nm

Hardness - Unseasoned:

4.6

Hardness - Seasoned:

6.1

Durability

Low Moderate Reasonably High High
(0 - 5 yrs) (5 - 15 yrs) (15 - 25 yrs) (more than 25 yrs)

In-Ground:

(0 - 7 yrs) (7 - 15 yrs) (15 - 40 yrs) (More than 40 yrs)

Above ground:

(0 - 20 yrs, usually < 5) (21 - 40 yrs) (41 - 64 yrs) (More than 60 yrs)

Marine Borer Resistance:

Lyctid Borer Susceptibility:

Not Susceptible

Lyctid Borer Susceptibility - Other:

Termite Resistance:

Resistant

Fire Properties

0 1 2 3 4 5 6 7 8 9 10

EFH Spread-of-Flame Index:

EFH Smoke-Developed Index:

Critical Radiance Flux - Lower:

>2.2 and <4.5

Critical Radiance Flux - Higher:

≥4.5

Smoke Development Rate:

<750
1 - non-combustible 2 - reasonably non-combustible 3 - slightly combustible 4 - combustible

Fire Properties Group
Number:

Average Specific Extinction Area:

<250

Bushfire Resistance:

BAL 12.5 and 19 – Door and window joinery only
Appearance

In contrast to a creamy-white band of sapwood, the heartwood of this species ranges in colour from light yellow through orange to light brown, with occasional dark brown streaks. Grain is generally straight with a very fine and even texture. The presence of numerous tight knots is a distinctive feature that produces a strikingly decorative figure on exposed faces.

Common Applications

In its area of natural occurrence, white cypress is commonly found as sawn timber (usually unseasoned) in framework and other aspects of general building construction. More widely, it is used as flooring, cladding and fencing material. Decorative uses of white cypress include quality indoor and outdoor furniture, turnery, joinery, carving, parquetry and linings. Other common applications include oyster stakes and jetty piles in low-salinity environments, as well as beehives.

Workability

In terms of hardness, white cypress is a firm timber (rated 4 on a 6-class scale in relation to both indentation and hand tooling). It can be satisfactorily machined and turned to a smooth finish. Pre-drilling is recommended for hand nailing seasoned timber, although machine nailing with shear-point nails works well. White Cypress readily accepts most standard coatings, stains and polishes. Special techniques, such as surface roughening, are required for gluing. 

Origin of timber
QLD
Sawn timber products from white cypress are readily available in the eastern states of Australia and its areas of origin.
Source of timber
Native Forest
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Joinery

Timber joinery offers a classic, stylish touch to any interior or exterior space.
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Decking

Timber decking creates spaces that are functional, practical and aesthetically pleasing. With the right design and care a timber deck will make a valuable addition to any home or business, creating an outdoor living space that will be enjoyed for years to come.
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Fencing

When it comes to fencing, timber is a natural choice. A material that is durable, strong and reliable it compliments almost every outdoor landscape and environment. Clear specification, detailed installation and appropriate maintenance will ensure a timber fence provides a natural and lasting property boundary and back drop for years to come.
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Retaining Walls (Landscaping)

When it comes to retaining wall, landscape design and construction, timber is the natural choice. A material that is durable, sturdy and reliable, it has natural aesthetics that help it blend seamlessly with the outdoors. Careful consideration during the specification and design process will facilitate the creation of a long lasting, durable and beautiful timber retaining wall that will complement its surrounding landscape for years to come.
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Cladding, External

The natural appeal, versatility and strength of timber makes it the superior choice for external cladding. Through specification, planning, design and finishing processes, timber cladding not only creates a building of superior strength, acoustic and thermal performance but also creates a place of beauty, style and natural appeal.
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Framing

Since people began building simple shelters, wooden framing has played an important role in shaping structures of many kinds. One of the most popular types of wooden framing is known as lightweight timber construction.
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Flooring

The warmth, strength and natural beauty of timber flooring is enduringly popular in a wide variety of domestic, commercial and industrial applications.

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