{"id":6883,"date":"2026-06-03T11:22:18","date_gmt":"2026-06-03T03:22:18","guid":{"rendered":"https:\/\/www.lastelegance.com\/au\/?p=6883"},"modified":"2026-06-03T11:28:10","modified_gmt":"2026-06-03T03:28:10","slug":"composite-vs-spotted-gum-decking","status":"publish","type":"post","link":"https:\/\/www.lastelegance.com\/au\/composite-vs-spotted-gum-decking\/","title":{"rendered":"Composite vs Spotted Gum Decking: The Australian Trade Guide"},"content":{"rendered":"\n

Spotted gum decks win the job. Sometimes, they bring the builder back six months later.<\/p>\n\n\n\n

A greying board. A splinter complaint. Tannin staining on the client’s new pavers. The deck hasn’t been oiled once \u2014 but the call comes to you.<\/p>\n\n\n\n

This guide cuts through the material debate. Cost over time, maintenance load, safety ratings, and the project types in which each material earns its place.<\/p>\n\n\n\n

Quick Comparison at a Glance<\/h2>\n\n\n\n
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Factor<\/strong><\/th>Composite Decking<\/strong><\/th>Spotted Gum<\/strong><\/th><\/tr>
Board cost (per m\u00b2)<\/td>$100\u2013$190<\/td>$140\u2013$250<\/td><\/tr>
Installed cost (per m\u00b2)<\/td>$250\u2013$450<\/td>$350\u2013$550<\/td><\/tr>
Annual maintenance cost<\/td>~$0 (wash only)<\/td>$400\u2013$1,000 per 30 m\u00b2<\/td><\/tr>
Lifespan<\/td>25\u201330+ years<\/td>25\u201330 years (maintained)<\/td><\/tr>
Janka hardness<\/td>N\/A (engineered)<\/td>11.0 kN<\/td><\/tr>
Slip resistance<\/td>R11 (AS\/NZS 4586)<\/td>Varies with surface oil<\/td><\/tr>
Termite resistance<\/td>Yes (capped composite)<\/td>Durability Class 1<\/td><\/tr>
Fire testing (ASTM E84)<\/td>FSI 85, SDI 300<\/td>Not applicable<\/td><\/tr>
Cap layer<\/td>0.8 mm<\/strong> capped composite<\/td>Oil\/sealant required<\/td><\/tr>
Flexural strength<\/td>26.2 MPa<\/strong> (EN 15534)<\/td>High (Janka 11.0 kN)<\/td><\/tr>
Warranty<\/td>15 years<\/td>Varies by supplier<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Figures are indicative. Costs vary by product, project size, and location.<\/em><\/p>\n\n\n\n

View composite decking specs and product range \u2192<\/a><\/p>\n\n\n\n

What Is Spotted Gum Decking?<\/h2>\n\n\n\n

Spotted gum (Corymbia maculata<\/em>) is a native Australian hardwood. It holds a Durability Class 1 above-ground rating and a Janka hardness of 11.0 kN \u2014 one of the toughest decking timbers in the country.<\/p>\n\n\n\n

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How Do the Costs Compare?<\/h2>\n\n\n\n

Upfront, spotted gum and composite aren’t worlds apart. Over 20 years, they are.<\/p>\n\n\n\n

Spotted gum looks like the premium material at the merchant. But annual oiling, occasional sanding, and re-coating add up fast. For a buyer specifying a 30 m\u00b2 residential deck or a multi-unit development, those ongoing costs change the total picture.<\/p>\n\n\n\n

Board and Installation Cost<\/h3>\n\n\n\n

Spotted gum boards run roughly $80\u2013$150 per m\u00b2 in Australia. Installed, expect $250\u2013$550 per m\u00b2 once labour is included. That hardness is part of the reason: at 11.0 kN Janka, every fastener needs pre-drilling. Blades wear faster. Cuts take longer.<\/p>\n\n\n\n

Composite boards range from $100\u2013$190 per m\u00b2 and install for around $250\u2013$450 per m\u00b2. LastElegance boards come with stainless steel hidden clip fasteners \u2014 no pre-drilling, no surface screws. Two installers can cover more area per day than with spotted gum. For large projects, the labour saving per m\u00b2 adds up. Custom lengths are also available to match non-standard deck dimensions \u2014 useful for retrofits and large-format commercial projects.<\/p>\n\n\n\n

Long-Term Cost Over 20 Years<\/h3>\n\n\n\n

Annual maintenance is where the numbers shift most. Spotted gum needs cleaning, light sanding, and 1\u20132 coats of quality decking oil \u2014 at least once a year in most Australian conditions. For a 30 m\u00b2 deck, that’s $400\u2013$1,000 per cycle in labour and materials. In coastal or subtropical zones, add more.<\/p>\n\n\n\n

Composite needs a wash. That’s it.<\/p>\n\n\n\n

Cost Item<\/strong><\/th>Composite (30 m\u00b2)<\/strong><\/th>Spotted Gum (30 m\u00b2)<\/strong><\/th><\/tr>
Installed cost<\/td>$7,500\u2013$13,500<\/td>$9,000\u2013$16,500<\/td><\/tr>
Annual maintenance<\/td>Minimal<\/td>$400\u2013$1,000<\/td><\/tr>
20-year maintenance total<\/td>Minimal<\/td>$8,000\u2013$20,000<\/td><\/tr>
20-year total<\/strong><\/td>$7,500\u2013$15,500<\/strong><\/td>$17,000\u2013$36,500<\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

These are indicative figures. Factory-direct composite supply removes importer and reseller margins \u2014 that shifts the upfront comparison further for trade buyers ordering at volume.<\/p>\n\n\n\n

Request a quote for your next project \u2192<\/a><\/p>\n\n\n\n

Maintenance: The Real Day-to-Day Difference<\/h2>\n\n\n\n

Most buyers underestimate what maintaining spotted gum actually involves.<\/p>\n\n\n\n

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The annual cycle: sweep and clean, sand any raised grain, then apply a quality decking oil in 1\u20132 coats. In coastal Queensland and northern NSW, that cycle runs more often \u2014 strong UV and salt air strip oil faster. Industry estimates put hardwood deck upkeep at 16\u201332 hours per year for a mid-sized deck.<\/p>\n\n\n\n

Composite care is different. Wash it down 2\u20134 times a year with soapy water. No oiling, no staining, no sanding, no re-coating. For builders handing over a multi-unit project, that’s a meaningful point of difference at handover.<\/p>\n\n\n\n

Durability in Australian Conditions<\/h2>\n\n\n\n

Both materials are durable. But the conditions attached to that durability are very different.<\/p>\n\n\n\n

Spotted gum’s toughness is real \u2014 but it depends on maintenance. Keep it oiled and protected, and it holds up well. Let upkeep slip, and moisture works into the grain. Surface checking and discolouration follow.<\/p>\n\n\n\n

Composite durability is built in. It doesn’t depend on the owner doing anything. LastElegance boards absorb just 0.2% water by weight<\/strong> (ASTM D1037). That’s close to inert. In coastal and subtropical zones, that matters.<\/p>\n\n\n\n

Performance Under Heavy Foot Traffic<\/h3>\n\n\n\n

Spotted gum’s 11.0 kN Janka rating gives it a real edge here. It resists dents and deep scratches better than any engineered board. For commercial boardwalks, high-traffic public spaces, or decks where heavy furniture gets dragged around regularly, that hardness counts.<\/p>\n\n\n\n

Composite decking boards \u2014 tested at 26.2 MPa flexural strength<\/strong> (EN 15534) \u2014 hold up well under normal foot traffic and most commercial use. Deep gouges from sharp impacts are more likely on composite than on spotted gum. That’s an honest trade-off worth raising at the specification stage.<\/p>\n\n\n\n

Termites, Lyctus Beetles, and Pest Resistance<\/h3>\n\n\n\n

Spotted gum is Durability Class 1 for termite resistance \u2014 the top rating. But it’s susceptible to lyctus beetles, also called powderpost beetles. These wood-boring insects work through hardwood from the inside, often without visible surface damage until the problem is advanced. In Queensland and northern NSW, lyctus is active and worth taking seriously at the spec stage.<\/p>\n\n\n\n

Composite has no biological material in its outer cap layer. There’s nothing for termites or lyctus to consume. It’s fully resistant to both.<\/p>\n\n\n\n

For builds in pest-active regions, this is worth raising with the client before the material is locked in.<\/p>\n\n\n\n

Appearance: Can Composite Match the Look?<\/h2>\n\n\n\n

Freshly oiled spotted gum is one of the best-looking decking materials you can buy. The colour range \u2014 pale honey to warm chocolate \u2014 combined with wavy interlocked grain and distinctive darker flecks, gives each board real character. No composite fully replicates that.<\/p>\n\n\n\n

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The qualifier: spotted gum only looks that way when freshly maintained. Skip a year of oiling, and it greys. The natural beauty that won the client over at the showroom starts to fade \u2014 and so does their satisfaction.<\/p>\n\n\n\n

Modern capped composite has closed the visual gap more than most people expect. Multi-tonal colour blending, embossed grain textures, and warm spotted gum\u2013tone colourways mean many buyers, when they hold samples at arm’s length, find the difference smaller than they thought. The colour isn’t grey. It doesn’t need oiling. What you specify is what it looks like in five years.<\/p>\n\n\n\n

Is There a Composite Spotted Gum Finish?<\/h3>\n\n\n\n

Yes. Composite is available in warm honey and light brown colourways with embossed grain textures that reference the look of spotted gum timber. Look for multi-tonal boards with colour variation across the face \u2014 not a flat single colour. That’s what makes them read as timber at normal viewing distance.<\/p>\n\n\n\n

No composite is identical to the real thing side by side. But viewed from a natural deck distance, most buyers find the resemblance close. After 3,000 hours of QUV accelerated ageing, LastElegance boards hold colour to \u0394E \u2264 4\u20135<\/strong>. The tone you specify holds \u2014 no oiling cycle needed.<\/p>\n\n\n\n

Request free samples to compare \u2192<\/a><\/p>\n\n\n\n

Safety \u2014 Slip, Splinters, and Fire Ratings<\/h2>\n\n\n\n

Three safety factors matter most for Australian buyers: slip resistance, splinters, and BAL fire ratings.<\/p>\n\n\n\n

Slip resistance:<\/strong> LastElegance composite boards carry an R11 rating under AS\/NZS 4586<\/strong> \u2014 wet or dry. Spotted gum’s slip resistance changes as surface oil wears. In commercial and pool settings, a consistent R11 is easier to specify and defend.<\/p>\n\n\n\n

Splinters:<\/strong> Composite doesn’t splinter. Spotted gum can, especially as it dries and the surface grain raises. For barefoot areas, family homes, or builds with public liability exposure, splinter-free is worth specifying.<\/p>\n\n\n\n

Fire ratings:<\/strong> Spotted gum achieves BAL-29 at 18 mm+ board thickness. LastElegance composite boards are tested to ASTM E84, with a Flame Spread Index of 85 and Smoke Developed Index of 300. These are different standards measuring different things \u2014 ASTM E84 tests flame spread and smoke, not bushfire zone exposure. For bushfire-zone projects, contact our sales team to confirm BAL certification for the specific product you’re specifying.<\/p>\n\n\n\n

Which Is Better Around Pools?<\/h3>\n\n\n\n
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For pool surrounds, composite is the stronger choice. Four reasons:<\/p>\n\n\n\n

    \n
  1. Consistent slip resistance<\/strong> \u2014 R11 wet or dry, regardless of when it was last oiled<\/li>\n\n\n\n
  2. No tannin bleeding<\/strong> \u2014 spotted gum produces moderate tannin runoff that stains pool coping, light-coloured pavers, and rendered walls<\/li>\n\n\n\n
  3. No splinters<\/strong> \u2014 important for bare feet on wet decking<\/li>\n\n\n\n
  4. No gum vein weeping<\/strong> \u2014 some spotted gum boards weep gum residue near water, especially in the first season<\/li>\n<\/ol>\n\n\n\n

    Spotted gum works around pools. But it demands diligent upkeep and careful hardscape management in the first 12 months.<\/p>\n\n\n\n

    Environmental Impact: The Honest Picture<\/h2>\n\n\n\n

    Neither material is the clear environmental winner. Both have real credentials.<\/p>\n\n\n\n

    Spotted gum is Australian-grown. When sourced from managed forests, it has a shorter supply chain than most imported timbers. FSC-certified spotted gum is available for projects where certified sourcing is a hard requirement.<\/p>\n\n\n\n

    Composite uses recycled wood fibre and recycled HDPE \u2014 60% recycled content \u2014 diverting waste from landfill and cutting demand for virgin timber. It also produces zero chemical runoff over its life. No oils, stains, or sealers enter the environment.<\/p>\n\n\n\n

    A deck replaced twice over 25 years uses roughly twice the raw material. One that lasts the distance uses half. That’s a real sustainability advantage.<\/p>\n\n\n\n

    LastElegance holds CE, ISO, and RoHS certifications. SGS-tested formaldehyde emissions are not detected (EN 717-1).<\/p>\n\n\n\n

    What Trade Buyers Should Know<\/h2>\n\n\n\n

    This section is for procurement managers, building material distributors, and builders placing volume orders.<\/p>\n\n\n\n

    Supply reliability:<\/strong> LastElegance is factory-direct. There are no importers or resellers between production and the trade buyer. That means consistent stock, scalable order quantities, and direct access to the factory for custom specs.<\/p>\n\n\n\n

    Lead times:<\/strong> For a 40-foot container, expect roughly 20 days production, 2 days packing, and 24\u201332 days sea freight to Australia. For a 20-foot container, production is around 15 days.<\/p>\n\n\n\n

    MOQ and customisation:<\/strong> The minimum order is 100 m\u00b2. Custom lengths, colours, surface textures, and OEM packaging are available directly from the factory. No reseller needed to access custom specifications.<\/p>\n\n\n\n

    Pricing:<\/strong> Factory-direct means no importer margin and no reseller margin. For trade buyers ordering at volume, that difference is real \u2014 and passed directly through to project pricing.<\/p>\n\n\n\n

    Warranty:<\/strong> 15 years, applies under correct installation and normal use.<\/p>\n\n\n\n

    Contact our sales team<\/a> or enquire about distribution \u2192<\/p>\n\n\n\n

    Which Option Fits Your Project?<\/h2>\n\n\n\n
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    Choose composite if:<\/strong><\/p>\n\n\n\n