Cypress pine is a versatile, durable, termite resistant timber used for housing construction. Australian cypress, Callitris Glaucophylla, is commonly known as white cypress.
This species constitutes a large part of Australia’s forestry heritage. It is uniquely Australian timber that had long been used by Aboriginal Australians for tools and medicinal purposes. It is now grown specifically for the timber industry with widely spread forest areas west of the Great Dividing Range. Extending from central Queensland into Southwestern New South Wales. These are managed native forests where cultivation, harvest and renewal are overseen by government authorities.
White cypress is a softwood and easy to work making it well suited to the commercial building industry. It has properties similar to that of a hardwood with a durability equal to the more robust of the hardwood species. Unlike treated pines that use chemical treatments to enhance the life of product, cypress has natural, aromatic resins, which protect the timber from termite, weather and decay. It is suitable for in ground applications with a probable life expectancy of 15 to 25 years. CSIRO research rated white cypress as level 2 for natural durability in accordance with AS5604.
Application & Attributes
The texture of the wood is even and fine with a straight grain and dark knots in the heartwood. It is richly patterned with a white sapwood and variegated browns of the heartwood. Although resinous cypress is not sticky like other sapwood timbers, it has an oily feel. A slower growing species its rings are relatively close helping to reduce shrinkage adding to its durability.
Cypress is suitable for both interior and exterior applications. It works well with both hand and power tools, the wood planes easily and resists warping. It glues well sands easily and readily accepts finishes. The properties of cypress make it suitable for the construction industry and its heartwood is commonly used for fence and verandah posts.
Cypress has high moisture content and as the timber dries fine surface cracks will appear. Slowing the drying process by painting the timber immediately will reduce these cracks. It will readily take clear sealants, stains or paints even in its green state. Leaving the timber unsealed will not affect the durability. In its raw state it will develop cracks and take on a soft antique grey color giving it an old rustic look.
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Sources:
https://en.wikipedia.org/wiki/Callitris
https://www.britannica.com/plant/cypress-pine
https://outlast.com.au/cypress-pine/