Licensed, Insured & Trustworthy Deck Building Specialists in Sydney
0413 185 735

Leading Composite Decking Sydney

Design your dream backyard with leading specialists who offer an 8 year warranty, personalised services & competitive pricing. 

High Quality Composite Decking

You don’t need to sacrifice the elegant charm of natural timber anymore (and you can say goodbye to splinters too) with advanced composite deck boards. Protected by industry-leading polymer capping technology, it’s time to enjoy a new Sydney composite deck that’s resistant to stains, termites, rot, warp, discolouration, and damage.

With fine details perfectly resembling wood grain, you get all the advantages of an eco-friendly deck building and lose none of the exquisite, rustic charms of hardwood.

We believe truly great boards should stand the test of time – that’s why we’re a leading installer of composite decking boards.  To date, we offer 4 brands of composite decking boards with a 25+year warranty – suited for all types of properties.


When it comes to maximizing living space, we’re all about making the most of the outdoors right along with the indoors. To that end, we put a lot of effort into making our gardens and yards places for entertainment and relaxation for as long as our climate will allow.


Trex is the world’s largest manufacturer of alternative timber products. Made of 95% recycled materials, it doesn’t need to fall a single tree to create modern, elegant materials that are almost indistinguishable from hardwood – but offer a wide range of advantages instead.


Combining the aesthetic appeal of timber with the benefits of composite materials, millboard is rising in popularity. Not only are they long lasting and resistant to termites, but they’re also environmentally friendly. Oh, and no painful splinters if you venture outside without footwear.


Combining unique style and sophistication, it delivers a premium performance product to your home. Artfully designed to replicate the look of real wood, enjoy moisture-resistant capping and a range of durable advantages that will look as stunning as the day it was installed for many years to come.

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What is Composite Decking Made Of?

It’s become the newest buzzword in outdoor living, but what does it *actually* mean? Unfortunately, with all of the choices available to the homeowner today, it’s easy to feel overwhelmed about choosing the right deck board material for your project.

If you’re like most homeowners and have been thinking, “what is the right decking board for me”, you’ve come to the right place to find the answer. There are three main types of composite deck materials available in today’s market: capped polymer, PVC, and polyurethane combined with mineral stone.

Capped polymer

Capped polymer Composite decking boards are an engineered product that consist of a core and a cap. This makes it seem like a simple product, when the make-up of this board is anything but simple.

The core of a capped polymer composite deck board is made up of two primary ingredients: wood (e.g. sawdust, wood chips, wood fibre) and plastic that are bonded together during the manufacturing process. However, unlike hardwood which requires trees to be felled, this type of board sources wood from recycled materials, making your new board an environmentally-friendly green addition to your home. 

The bonded polymer that caps each board prevents boards from splintering, cracking, or warping and helps protect the composite board from the harsh weathering effect of our Australian climate. 

These boards blend beautifully with our modern lifestyles so that weathering, fading, scratching and staining are no longer problems that we need to consider.

Modern manufacturing methods like dual embossing have allowed companies to produce composite deck boards that show complex and distinctive grain patterns and textures that are comparable to the beauty of hardwood decks from the not-too-distant past

Put simply, composite deck board material is the fastest growing timber-alternative on the Australian market.

Long gone are the days when alternative products meant sacrificing aesthetic beauty. In fact, you’ve probably enjoyed time in the great outdoors on a deck that looked indistinguishable from hardwood variations.

So while it’s easy to say composite is “not wood”, that would be selling things short. These boards are the fastest growing alternative to timber options on the planet, and with a list of benefits as long as your arm, it’s easy to see why.

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What are the Benefits of Composite Decking?

At UrbanArch Building we’ve got years of experience working with Sydney households to turn unused outdoor spaces into functional and exciting decks that become central to the way you live your life.

But we also know you’re not here to hear us talk about ourselves, you’re here to find out what advantages a new board would bring to your day-to-day life.

When it comes to a low-maintenance composite deck boards that keep money in your pocket, it’s tough to go past these benefits:

With the appearance of stunning timber, but the durability advantages only man-made composite can offer, this options is for the homeowner who values their time outdoors.

What is this type of composite decking made of?

When you plan on spending your weekends relaxing outside, it helps to know the boards underfoot can handle any guests, outdoor furniture, and elements.

It is made through what’s known as a ‘co-extrusion’ process.

This combines all of the raw materials needed to create composite decking (e.g. sawdust, wood fibres, wood chips, recycled plastic), and melts them into a mixture. This mixture is then shaped into the boards you’ll see online and at your local hardware store, making it tough to spot the difference between timber and composite.

But unless you’ve got incredible x-ray vision, what you won’t notice is the additional protective layer, bonded to the substrate to prevent delamination (i.e. layers splitting in your board). This process might be invisible, but it adds a rock-hard shell to protect against foot traffic, stains and spills, plus protection from the sun’s harmful UV rays which can fade natural wood.

So while it may look like rustic, gorgeous timber, its brilliant texture and resilient exterior have been scientifically made to stand up to everything that the Sydney climate can throw at it (and then some).

How Much Does Composite Decking Cost?

Let’s talk dollars and cents.

As an average, the price of a single board starts at $137 and goes up from there. But your home isn’t average, and neither are we.

That’s why it’s easier to quote a project based on total costs (which includes installation as well as the boards) which leaves the average cost sitting between $180 to $320 per square metre – this covers the boards and hidden fasteners.

As with any project, you’ll need to factor in a few variables relating to the cost of your finished deck. These typically include:

At UrbanArch Building we set the standard in quality, low-maintenance alternatives to wood that won’t break the bank. Our deck builders design for Australia’s unique conditions and offer unrivalled lifestyle advantages, so if you’re interested in learning more, call 0413 185 735.

If you want to learn more, check out our guide for composite decking cost. 

How long does the installation process take?

A composite deck is designed to be durable and  pleasing on the eye. We’ll need to secure council permission (if necessary) before construction, with an estimated 8 to 10 weeks between filing the paperwork to completing the project.

Why Should You Pay More for Composite (When Timber Is Cheaper)?

Every savvy homeowner knows a home improvement project is much more than an upfront price.

If you’re paying a handyman to build a deck out of wood you found washed up on Bondi Beach then you’ll be saving money hand over fist. But when that board starts splintering and cracking within weeks you’ll face years of expensive repairs and fixes.

It’s true that a composite deck  will cost more than the same-sized timber deck, but you’ll make that money back (and then some) as the years go by. This is because it doesn’t need the annual maintenance and attention that hardwood requires.

No staining. No oiling. No painting.

Better still, these boards don’t splinter, warp, rot, or deteriorate in the harsh Australian elements, so you can save hundreds of dollars every year that would have gone towards deck maintenance.

Over the 25 to 30 year lifespan of a 40 sq metre deck, annual maintenance at a cost of $40 square will quickly add up. Over 10 ten years, it  can add up to savings of $16,000, depending on the amount of maintenance required.

How to Compare Materials

Composite deck boards have been a popular choice for outdoor decks and entertainment areas for over 30 years, so naturally there’s a wide range of brands to choose from.

Over time, brands have introduced dynamic innovations, new materials, upgraded manufacturing processes, and modern installation techniques to help deliver a superior board – but this does make choosing the right material more of a challenge for you.

Land on the wrong board and you can quickly end up with a deck that’s not worth your investment, and likely to cost plenty in future repair and maintenance costs. To help you choose the best board for you, always compare:

Wondering what to look for when choosing the best product?

Capped vs. Uncapped Decking

With endless boards advertising themselves as ‘Maintenance-Free’ it’s tough to know who’s telling the truth and who’s peddling false information.

The most important thing to know is that capped decking boards fall into the ‘Maintenance-Free’ category, because they’re protected with an extra layer that’s bonded to the surface of your boards during the manufacturing process.

While early, first generation boards were uncapped (meaning they were at risk of fading, mould and mildew), composite deck boards  are now available capped. We only offer the best materials, meaning every product we source and install offers advanced premium protection, keeping your boards safe and secure against outdoor furniture scratches, harmful UV rays, and clumsy family members.

Best of all, the bonding process occurs during manufacturing and under extremely high temperatures. That means no chemicals, no nasty bonding agents, and no adhesives that can end up in your garden.

Composite Decking

Frequently Asked Questions About Composite Decking in Sydney

What brands do you supply and install?

Popular brands include Trex, Millboard, and Azek. We’re a  leading installer of composite decking, and we install only those boards that have a proven track record for durability and that look good in the Sydney environment.

What is a composite deck board made of?

These boards consist of plastic and wood (e.g. sawdust, chips and wood fibre) with zero chemicals used during the construction process for a truly eco-friendly option.

How long do composite deck boards last?

With a protective shell around your board’s inner core, they can last from 25 to 50 years with little maintenance.

How much maintenance will be necessary?

This material won’t fade or wear from exposure to the harsh sun. You’ll also enjoy a deck that’s resistant to mould, mildew, termites, plus wear and tear. With so many defensive advantages your new board needs nothing more than a good sweep and wash 2 to 3 times a year to prevent dirt and grime build-up.

Why Choose Urbanarch Building

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We understand you are investing your hard-earned funds - so we invest our skill, patience, and energy to deliver your finished vision using quality materials - not second-hand or auction sourced.

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