DECKING NSW SPOTTED GUM KD STD & BETTER RANDOM LENGTHS

DECKING NSW SPOTTED GUM KD STD & BETTER RANDOM LENGTHS

Everything you Need to Know about Spotted Gum Decking

Spotted gum decking comes from a popular Australian hardwood that grows mainly on Australia’s east coast, generally harvested from New South Wales and Queensland. With trees that can grow up to 70 m in height — but generally average around 45 m — spotted gum timber can be harvested from four different native Australian tree species

What Does Spotted Gum Look Like?

Though the spotted gum tree itself has light coloured bark — usually ranging from white to grey — the decking that’s made from spotted gum heartwood is generally reddish-brown to golden-brown in hue. Over time, spotted gum decking will fade to grey. Homeowners and builders are often drawn to the wavy grain in spotted gum decking which produces a characteristic “fiddleback” look.

Versatile Uses of Spotted Gum

Spotted gum is a fairly versatile wood, used regularly in several different industries:

• Construction and engineering
• Decking and cabinetry
• Paper manufacturing
• Shipbuilding
• House framing

Higher Cost than other Hardwood Options

Though spotted gum is definitely popular with Australian growers because of its ability to conserve water usage in drought-prone areas, it can be risky for growers because it often takes between 30-50 years from planting to harvest. With all this in mind, you probably won’t be surprised at the relatively expensive cost of spotted gum. Among hardwood options like merbau, jarrah, and blackbutt, spotted gum is usually the priciest option.

Attributes of Spotted Gum: Pros and Cons

There are plenty of qualities that make spotted gum decking a popular hardwood option. However, there are some characteristics that should make homeowners think twice before taking the plunge. Let’s take a closer look:

• Tough. Spotted gum is known as a relatively tough and durable choice, with a Janka Hardness rating of 11.
• A Degree of Fire-Resistance. In areas known for bush fires, spotted gum that’s at least 18 mm thick doesn’t require fire retardant treatment.
• Low Tannin Content. The relatively low tannin content of spotted gum means that it’s less liable to bleed-through and staining than some other hardwood varieties.
• Mold & Cupping Susceptible. One major drawback of spotted gum is that it’s susceptible to moisture-related issues like mold and cupping. The unattractive concave shaped caused by cupping — not to mention the hassle of mold removal — can be a drawback for many homeowners.
• Lyctus Susceptible. Though spotted gum is resistant to termites, it’s susceptible to lyctus infestation.  Lyctus, a wood-boring beetle, can cause considerable damage to spotted gum wood.
• Maintenance Needs. Like other natural timber decking options, spotted gum requires ongoing maintenance in the form of oiling and sealing to maintain its original look.