One of the most important things for Landscaping is Durability. Check out our Learning Centre, and take a look at the Durability page. This explains how durability is measured. We have listed all our Durable and Very Durable timbers in the table below, grouped by colour.It is worth noting that sapwood is not durable at all when talking about the durability we are referring to the heartwood. Occasionally some boards will have a small amount of sap on the edge and this will either need to be removed prior to use or it will eventually rot.
All timber, if left outside uncoated, will naturally turn a silvery-grey colour. This is a natural process as the outer layers of the timber cellulose get exposed to the weather.
The timber will also, split, check and warp, but depending on the species this may not be too noticeable. One way to reduce weathering and distorting of timber is to coat it with a protective product, we go into each product in more details on our Coatings page.
One of the main things to consider when trying to decide whether to coat your timber or leave it to weather naturally is, if you are willing to put the effort in to maintain the coating. All exterior coatings will need maintenance on an annual basis (usually just a good clean), and they will require recoating every 6 months to 5 years, depending on the coating and its exposure to the elements.coa
Another buzz word that is becoming more and more common with Landscape Architects is sustainability. Read both our Sustainability and Resource Certification pages in the Learning Centre if you are keen to learn more.
Timbers Suitable for Exterior Use
|Colour ||Timber ||Durability |
|Yellow ||Yellow Cedar ||Very Durable |
|Yellow / Light reddish-brown ||Balau ||Durable |
|Golden yellow / Light brown ||Macrocarpa ||Moderately Durable above ground |
|Golden yellow / Light brown ||Oregon ||Moderately Durable |
|Golden yellow / Light brown ||Totra ||Very Durable |
|Light Pink ||Taun ||Moderately Durable |
|Pink ||Saligna ||Durable above ground |
|Pink / Light brown ||Cedrela ||Durable |
|Light brown ||Sapele Mahogany ||Durable |
|Light brown ||Vitext ||Durable |
|Light brown ||Western Red Cedar ||Durable |
|Straw brown ||Pilularis (Black Butt) ||Durable |
|Medium brown ||Teak ||Very Durable |
|Grey to Reddish/dark brown ||Spotted Gum ||Durable |
|Yellow, fading to Dark brown ||Iroko ||Durable |
|Red, fading to Dark Brown ||Bubinga ||Durable |
|Red/Redish-brown, fading to Dark Brown ||Jarrah ||Durable |
|Red/Redish-brown, fading to Dark Brown ||Padauk ||Durable |
|Red/Redish-brown, fading to Dark Brown ||Rosewood ||Very Durable |
|Red/Redish-brown / Dark Brown ||Kwila ||Durable |
A low to medium density softwood, originally from California and introduced to NZ in the mid 1800’s, planted mostly as shelterbelts. The heartwood is moderately durable, and is light golden brown in colour.
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The timber needs to be air dried well before kiln drying to avoid collapse and internal checking.
Typical uses include T&G panelling, exposed beams and rafters, and landscaping applications including large end section pergolas.
Available ex-stock in sizes ranging from 100x25 to 200x50mm.
|Durability In Ground:
|Durability Above Ground:
|Density Air Dry:
|Stability Kiln Dry:
Prone to shrinkage and distortion
|Modulus of Rupture:
|Modulus of Elasticity:
Phone our sales team on (09) 620-0260 or Email us anytime, we'd be happy to help.