Hardwood vs Composite Decking: Which One's Right for Your Home?

If you're planning a new deck, you've probably come across this debate already: go with real hardwood timber, or opt for composite boards? It's one of the most common questions homeowners ask before getting quotes, and it's worth getting your head around before a builder shows up.

The short answer: both can work well, but they suit different people. Here's a straight-up breakdown so you can walk into the process knowing what you actually want.

What Are We Comparing?

Hardwood decking is exactly what it sounds like, real timber, cut from hardwood trees. In Australia, popular species include Spotted Gum, Blackbutt, and Merbau. These are dense, durable timbers that have been used in Australian homes for generations.

Composite decking is a manufactured product made from a blend of wood fibres and plastic (usually recycled). It's engineered to look like timber but behaves quite differently. It comes in set colours and profiles, with no natural grain variation from board to board.

Spotlight: Spotted Gum

If you're going hardwood, Spotted Gum is one of the best species you can choose, especially here in NSW.

It's one of Australia's hardest and most durable native timbers, with a Janka hardness rating of around 11kN (for comparison, Merbau sits at about 8.5kN). It's naturally resistant to termites, lyctid borer, and Class 1 in-ground durability, meaning it holds up in tough outdoor conditions without needing to be chemically treated.

Visually, it's stunning. The grain is interlocked with a distinctive fiddle-back figure, and the colour ranges from pale browns through to deep chocolate tones. It also weathers beautifully over time, either developing a natural silver-grey patina if left untreated, or holding its warm tones if oiled regularly.

For the North Shore and Northern Beaches, where properties often have bush outlooks or coastal settings, Spotted Gum fits the environment naturally.

Where Hardwood Wins

Real beauty. No composite product fully replicates the look of a Spotted Gum deck in good condition. The colour variation, the grain, the way it interacts with light, it's genuinely different from manufactured boards. If aesthetics matter to you (and they usually do), hardwood is hard to beat.

Cooler underfoot. In a Sydney summer, this is no small thing. Timber regulates heat better than composite, making it noticeably more comfortable to walk on barefoot, around the pool, out of the back door, wherever kids and bare feet are involved.

It can be renewed. A tired hardwood deck can be sanded back, re-oiled, and look brand new again. A composite deck that's faded or damaged is much harder to restore.

Lower entry cost. Hardwood generally costs less per square metre in materials. If upfront budget is the priority, it has the edge at the start.

Where Composite Wins

Low maintenance. This is the big one. A composite deck needs almost no upkeep beyond an occasional hose down. No oiling, no sanding, no annual maintenance schedule. If you're time-poor or simply don't want to think about it, composite removes that commitment entirely.

Consistent appearance. If you want the deck to look the same in 10 years as it did the day it was built, composite delivers that. Hardwood will weather and change, which some people love and others don't.

Wet areas. Around pools, spas, or in areas with heavy rainfall and shade, composite handles moisture better and won't rot if drainage or airflow isn't ideal.

Splinter-free. Important if you have young kids or pets. Neglected hardwood can splinter; composite won't.

What Should You Choose?

Here's the honest version:

Choose Spotted Gum hardwood if you love the look of real timber, you're happy to oil the deck every year or two, and you want something that can be refreshed and repaired over decades. It suits most Sydney homes aesthetically, and in the right hands it's one of the best performing decking materials available.

Choose composite if low maintenance is your top priority, you have a pool or high-moisture area, or you simply don't want to think about deck upkeep once it's done. Be prepared to pay more upfront, and understand that what you see is what you get, it won't look more beautiful over time the way timber can.

Neither is wrong. But most homeowners, when they see a well-built Spotted Gum deck, know pretty quickly which way they're leaning.

Get the Right Advice for Your Project

The material is only part of the decision. The design, subframe, drainage, and installation quality all play a role in how your deck performs and looks over time.

If you're based on Sydney's North Shore or Northern Beaches and want to talk through your options, Northline Decking can help. We work with both hardwood and composite materials and will give you a straight recommendation based on your home, your budget, and how you actually use outdoor space.