A great outdoor deck is more than just a place to relax with a cold drink on a sunny afternoon, it’s an investment in your home’s value, lifestyle, and comfort. Whether you're a homeowner planning a weekend project, a builder working on a client’s dream space, or a landscaper looking to elevate an outdoor design, the quality of your decking supplies can make all the difference.
In this article, we’ll break down what to look for in high-quality decking materials, how to make sure your space will stand up to the Aussie elements, and where to find the right products to get your project started.
Why Decking Quality Matters for Outdoor Projects
Building a deck isn’t something you want to do twice, so it pays to do it right the first time. Choosing quality decking supplies from the outset helps avoid costly repairs, reduces ongoing maintenance, and ensures your deck not only looks great but performs well for years.
Weather Resistance and Long-Term Durability
Outdoor decks take a beating from sun, rain, humidity, and temperature fluctuations. Using sub-par materials might save money initially, but they’ll wear down faster, warp, or even rot over time. Quality timber or composite boards are designed to handle these conditions with fewer issues, giving you peace of mind that your deck will stay strong and sturdy season after season.
Appearance and Maintenance Over Time
No one wants a deck that looks tired or weathered within a year. Quality decking materials age more gracefully. Whether you’re after a rich, natural timber look or a low-maintenance composite option, investing in the right boards ensures your deck stays visually appealing with less effort.
What to Look for in Quality Decking Supplies
So, what actually makes decking supplies “high quality”? Here’s what to keep in mind when making your choice.
Timber Type – Hardwood vs Softwood vs Composite
Timber is still a favourite for many deck builders, but not all timber is created equal. Hardwoods like Merbau, Spotted Gum, or Blackbutt are dense and naturally durable, making them ideal for high-traffic outdoor areas. Softwoods like treated pine are more budget-friendly and easier to work with but may require more upkeep over time.
Composite decking is another great option. Made from a mix of recycled timber fibres and plastic, it offers a low-maintenance solution with strong weather resistance and consistent colour. If you’re short on time but want something sleek and modern, composite might be the way to go.
Moisture Resistance and Treatment Grades
If you’re using natural timber, be sure it’s treated for outdoor use. Timber decking should meet the appropriate treatment grade for its environment, especially if your deck will be exposed to high levels of moisture or humidity. For example, H3 treated timber is suitable for above-ground use, while H4 is designed for in-ground contact.
Always ask your supplier about the treatment level and whether the timber has been kiln-dried. This helps prevent warping and ensures it’s ready for long-term exposure to the elements.
Slip Resistance and Safety Ratings
Decking needs to be safe to walk on, even in wet conditions. Look for boards with appropriate slip resistance ratings, especially if you’re building around pools, outdoor showers, or exposed coastal areas.
Many composite boards come with a textured surface that improves grip. For timber, the finish and board profile can make a difference, so speak with a specialist if safety is a concern in your project.
Where to Buy Reliable Decking Materials
The quality of your deck starts with the quality of your supplier. Here’s why choosing a trusted source matters.
Trusted Local Timber Suppliers
Big-box retailers might offer convenience, but they often can’t match the expertise or range of a dedicated timber supplier. At Canterbury Timber, we’ve been helping builders, landscapers, and homeowners create standout outdoor spaces for decades. Our team can guide you through the best material options based on your design, budget, and site conditions.
You’ll find everything from hardwoods to composite decking, plus fixings, sealers, and subframe materials, all in one place, as well as a cutting and milling service to make it easy to find the timber you need in the perfect size. If you’re unsure where to start, visit our About Us page to learn more about what we have to offer.
We also offer friendly, expert advice in-store or over the phone. You can reach out through our Contact page any time.
Decking Supplies FAQs
What type of timber is best for decking?
Hardwoods like Merbau, Spotted Gum, and Blackbutt are top choices due to their strength, natural durability, and resistance to decay. Treated Pine is a more affordable softwood option, great for budget-conscious projects if properly maintained.
Is composite decking better than timber?
It depends on your priorities. Composite decking is low-maintenance, won’t splinter or warp, and often has built-in UV resistance. Timber offers a more natural look and can be sanded or refinished, but usually requires more upkeep.
How do I know if decking timber is treated properly?
Check the treatment grade (H3 for above ground, H4 for in-ground use) and ask your supplier for documentation or confirmation. Properly treated timber should be certified and ready for external applications.
What else do I need besides timber for a deck?
Along with boards, you’ll need structural timber for the subframe, fixings (like stainless steel screws), sealers or stains (if using raw timber), and possibly joist protectors or weed matting.
Where can I buy quality decking supplies near me?
If you’re in Sydney or surrounds, Canterbury Timber is your go-to for expert advice and quality materials. We supply to both tradies and homeowners, with everything you need to bring your project to life.