Timber Decking Sizes: Everything You Need to Know

Australia is blessed with some of the world’s most resilient and beautiful timbers, perfect for outdoor decking. Timber decking in various sizes is ideal for creating a functional outdoor space and incorporating garden ideas, bringing a slice of nature to your backyard. In this article, we dive deep into timber decking sizes, the significance of different timber species, and how composite materials stack up against natural timber.

An Introduction to Timber Decking Sizes

Why Size Matters

Selecting the correct timber decking size is fundamental. The size of the deck boards can influence the overall appearance, functionality, and longevity of the deck. Different decking sizes can create a varied feel for outdoor spaces. Whether you want a bold statement with larger boards or a subtle, refined look with narrower boards, there’s a size to fit every aesthetic.

Popular Timber Decking Sizes

The timber decking sizes often used in Australia include:

  • 70 x 19mm
  • 90 x 19mm
  • 140 x 19mm

Different decking board sizes cater to different needs, with some suited for larger expansive areas and others more appropriate for smaller patios or balconies.

Decking in Garden Ideas: Reaping the Benefits

Decking is more than just flooring for your outdoors. It’s an opportunity to extend your living space, breathe life into garden areas, and make your home more aesthetically pleasing.

Natural Beauty

Timber decking, especially species like spotted gum, brings any garden a natural, earthy feel. Australian hardwoods‘ varied colours and grain patterns add a touch of elegance.

Durability and Functionality

Many Australian hardwoods, such as spotted gum, resist borer activity. They possess a natural resilience to past borer activity, ensuring longevity. Moreover, timbers like treated pine offer a cost-effective, durable option. With the proper treatment, these timbers can withstand Australia’s harsh climates.

Composite Decking: The New Kid on the Block

While natural timber remains a top choice, composite decking is gaining popularity. Here’s why:

Consistency and Low Maintenance

Composite decking boards offer a consistent colour and surface. Natural timber is less prone to warping, splitting, or cracking. Moreover, they require minimal maintenance.

Environmentally Friendly

Often made from recycled materials, composite decking can be a more sustainable choice. It merges the best of both worlds: timber’s aesthetics and artificial materials’ benefits.

Factors to Consider When Choosing Timber Decking Sizes and Materials

Quality and Grade

Not all timbers are created equal. For instance, the select grade offers minimal imperfections, whereas the standard quality might have visible gum veins and knots. It’s crucial to choose a degree that aligns with your desired finish.

Fire Ratings

In areas prone to bushfires, the fire rating of the timber becomes essential. Woods like spotted gum have high fire resistance, making them suitable for such regions.

Stock and Delivery

Before making an order, it’s always good to check the stock. A reliable team should be able to provide timely delivery and excellent service.

Choosing suitable timber decking sizes and materials can transform your outdoor living experience. Whether you lean towards the natural charm of Australian hardwoods like spotted gum or the convenience of composite materials, making an informed decision is essential.

Decking offers myriad possibilities, from the variety of hardwood timber decking to the flexibility of decking board sizes. Take your time, consult with experts, and make your outdoor space a dream come true. And remember, a deck is more than just a feature of your house; it’s an extension of your living area and a testament to your taste and style. 

Practical Tips for Enhancing Your Timber Decking Experience

Maintenance and Care

Like any product, timber decking demands a certain level of care to ensure it remains in tip-top shape. Here are some pointers:


Ensure your deck has proper drainage. Standing water can cause rot, mould, and deterioration in the long run. It’s crucial to keep your deck free from prolonged moisture.


Treat your timber with protective finishes that help to repel water and UV rays. Regularly re-apply according to the product’s instructions.

Regular Cleaning

A simple sweep can keep leaves and debris off your deck, preventing potential decay or borer activity.

Add-ons and Features

Decking doesn’t have to be a plain expanse of boards. You can elevate your outdoor living space with a range of features:

Outdoor Furniture

Opt for furniture that complements the colour and texture of the timber. This will make your decking an inviting space to relax or entertain.


Subtle outdoor lighting can enhance the ambience of your decking area. Not only does it look great, but it also adds an element of safety during nighttime.

Plant Life

Incorporate greenery and flowers. Planters or built-in garden beds can add vibrancy and freshness to your deck.

Safety First

Safety is paramount, especially in outdoor areas exposed to the elements:

Non-slip surfaces

Australia’s rainy weather can make timber surfaces slippery. Consider applying non-slip treatments or mats, especially in high-traffic areas.


If your deck is elevated, have sturdy bars to prevent accidents.

Nationwide Timber Experience

Australia boasts an extensive range of timbers. Getting advice and products from a nationwide perspective ensures you’re exposed to the best variety. While this article doesn’t endorse any specific company, seeking advice from national timber experts can be invaluable. They can offer insights into regional timber preferences and the latest trends and provide guidance based on years of nationwide experience.

Final Thoughts

Timber decking, in its varied sizes and materials, offers homeowners an unparalleled chance to enhance their living spaces. Whether you’re nestled in the city’s heart or along Australia’s sprawling coastline, there’s a decking solution tailored to your needs. The choices are vast, from the rich hues of hardwood timber to the convenience of composites. Dive deep, research, and embark on a decking journey that mirrors your aspirations and dreams.