From The Workshop

Composite or Timber Is the Wrong Question: Choosing Decking for Sydney’s Eastern Suburbs

By Greg · 4 min read · 13 October 2026

Almost every consultation I do starts with the same question: should we go composite or timber? It’s a fair question, but in my experience it isn’t the one that decides whether you’ll love your deck in fifteen years. The products on the market today vary so much, even within one category, that the label tells you very little. What matters is how a particular board performs on your particular site.

I’m Greg, a licensed NSW carpenter (Lic. 272840C), and I build top-end decks and pergolas across Sydney’s Eastern Suburbs as a deck builder in Sydney. Here are the questions I actually work through with clients before we choose a board.

How Much Sun Will the Deck Get?

Eastern Suburbs decks often face north or west with no shade, and a Sydney summer afternoon is unforgiving. Some boards get noticeably hot underfoot, and darker colours generally hold more heat. Strong UV also affects how a surface fades or weathers over time.

If you’ll be walking barefoot to the pool or the beach shower, heat matters as much as appearance. I’ll talk you through which colours and materials tend to stay more comfortable, and where a pergola or shade structure might change the equation.

How Close Is It to the Ground, or the Water?

A low deck over sand behaves very differently from a raised deck with open air beneath it. Low decks have less airflow, so the boards and frame sit in a damper environment. Some materials tolerate that far better than others, and the frame and ventilation have to be designed for it either way.

Proximity to water matters too. On the coast, salt air affects fixings, finishes and some board surfaces. Around a pool, you’re dealing with splashing, chlorine or salt water and constant wet feet, so slip resistance and how a board handles repeated wetting become priorities.

Will It Move With the Heat?

Every decking material expands and contracts, but differently. Timber moves mostly with moisture; many composites move more with temperature. That affects board gaps, end joints, fixing systems and how the deck looks on a hot day versus a cool morning.

This is where installation matters as much as product choice. Millboard, TrexPro and WoodEvo, which I’m approved to install, each have their own requirements for spacing and fixing. Getting those details right is what keeps the deck looking sharp and protects the manufacturer’s warranty. If you’re comparing products, my composite decking brands guide sets them side by side.

Rooftop and Elevated Decks

Rooftop and upper-level decks bring their own considerations: weight, protection of the waterproofing beneath, drainage, wind exposure and often full sun all day. The right board here might not be the right board for a shaded garden deck, and the substructure is usually a design job in its own right.

How Much Maintenance Will You Really Do?

Be honest with yourself here. Hardwoods such as spotted gum and blackbutt are beautiful and durable, but to keep their colour they need regular cleaning and oiling. Left alone, they weather to a silver grey, which some people love and others don’t. More on that on my hardwood decking page.

Quality composites generally need much less: periodic cleaning rather than recoating. If you travel a lot, have a holiday home, or simply don’t want a weekend job every year, that difference may outweigh everything else. See composite decking in Sydney for how I build with it.

Budget, Looks and Long-Term Ownership

The board that’s cheapest to buy isn’t always the cheapest to own. I like to look at three things together: the upfront cost, the look you want on the day it’s finished, and what the deck will cost you in time and money over the years you plan to stay. Sometimes premium hardwood is the right answer; sometimes a high-end composite is. Often the choice comes down to which compromise suits the way you live. For a starting point on budget, see what a deck costs in Sydney.

You Have the Reviews. Experience Fills the Gaps

Homeowners today are well informed. You’ve read the reviews, seen the brochures and scrolled through the photos. What reviews can’t tell you is how a board will behave on your block, facing your direction, sitting at your height above sand, a few streets from the ocean. That comes from having built with these materials, seen them age, and fixed the problems others left behind.

My role is to translate what you’ve read into a choice that will hold up on your site.

Book a Consultation

If you’re weighing up decking options for a home in Sydney’s Eastern Suburbs, I’d be happy to look at your site, bring samples and help you choose on performance rather than labels.

Book a Consultation with The Decksmith.

Greg — Owner-operator, The Decksmith. Licensed NSW carpenter (Lic. 272840C). Lead carpenter on every build.