There’s something timeless and inviting about a wooden deck, especially when it’s built around a luxurious spa pool. Not only does timber decking enhance the look of your outdoor space, but it also improves functionality by creating a warm, slip-resistant, and stylish area for entertaining or relaxing.
This guide is designed to help you create a custom deck around your spa pool, whether you’re in Auckland or elsewhere in New Zealand. At Jet Spas, we provide premium spa pools Auckland homeowners rely on, and we ship nationwide so Kiwis all over the country can enjoy the same quality experience. Let’s walk through the steps to build your own wooden spa surround, highlight some trending design ideas, and explain why this is the perfect project for our climate.
Why Timber Decking Works So Well in Auckland
Auckland’s climate is well-suited to outdoor living. With its mild winters, warm summers, and generally damp conditions, it’s the kind of environment where people spend a lot of time in their gardens, on their patios, or soaking in their spa pools. Timber decking fits seamlessly into this lifestyle.
Treated or hardwood decking not only stands up well to the elements but also feels comfortable underfoot year-round. It dries quickly after rain, doesn’t absorb too much heat in the sun, and provides a natural aesthetic that suits a wide range of home styles, from coastal baches to urban villas. With spa pools being increasingly popular in Auckland thanks to their health benefits and versatility, a timber deck is a natural complement.
Of course, Jet Spas doesn’t just serve Auckland, we deliver spa pools across New Zealand, so no matter where you’re building, this guide applies.
Decking Trends Around Spa Pools
Modern backyards are being designed with comfort, style, and functionality in mind, inspiring homeowners to create their own outdoor sanctuaries. When it comes to decking around spa pools, many are moving beyond plain platforms to create complete outdoor retreats that are both stylish and practical.
Some of the most popular trends include wrapping the deck around the spa for a flush, built-in look that makes the pool feel like part of the landscape. Others prefer partial surrounds, where the deck extends on one or two sides to allow for seating or an entertainment area. Incorporating planters, steps, or even a pergola can help define the space and give it a more purposeful design. In some cases, decks are raised to match the height of the spa pool, creating a smooth transition and enhancing accessibility.
More adventurous builds include multi-level decks where the spa sits slightly sunken or at the centre of a tiered design. This adds drama and dimension to the backyard while also improving drainage and insulation around the spa.
Planning Your DIY Spa Deck
Before you grab your hammer and saw, take time to carefully plan your build. First, decide how much of the spa you want to surround. Will the deck go all the way around, or just frame one side? You’ll also need to factor in how much space is required for safe access, especially if you intend to install steps or seating.
It’s also important to think ahead about spa maintenance. Access to the service panels should remain unobstructed. If your deck will cover access points, consider building in a hinged trapdoor or removable section. Ventilation around the spa is another consideration, good airflow underneath the deck helps to reduce moisture build-up and prolong the life of the spa shell and components.
Accurate measurements are essential for a well-built deck. Mark out your deck’s dimensions and use string lines or stakes to visualise the layout. This attention to detail will ensure a professional-looking result.
Choosing the Right Timber
The timber you select will affect not only the appearance of your deck but also its longevity and maintenance requirements. In New Zealand, popular choices include Kwila, a rich, dense hardwood known for its durability and natural oils that resist rot and insects. Vitex is another excellent hardwood option, it’s lighter in colour and sustainably sourced, making it a more eco-conscious choice. Thermally modified pine has gained popularity as a treatment-free softwood that holds up well in damp conditions. Traditional H3.2 treated pine is cost-effective and widely available, especially suitable for structural framing if you’re on a budget. Consider these factors when choosing the right timber for your deck.
Thermally modified pine has gained popularity as a treatment-free softwood that holds up well in damp conditions. Traditional H3.2 treated pine is cost-effective and widely available, especially suitable for structural framing if you’re on a budget.
No matter the timber you choose, use stainless steel fasteners and galvanised brackets to prevent rusting. This is especially important in humid areas like Auckland, where coastal moisture can accelerate corrosion. These materials are more resistant to rust and corrosion, ensuring the structural integrity of your deck over time.
Constructing the Subframe
Once your materials are ready, it’s time to construct the frame that will support the decking boards. This part of the build is crucial and needs to be solid and level. Begin by digging post holes and setting them in concrete if your deck will be raised off the ground. Use a laser level or spirit level to ensure the bearers are even, as this will affect the finished look of your deck.
Attach the joists securely, spacing them evenly to support the weight of both the decking and the people using the spa. Standard practice is to place joists no more than 400mm apart. If your deck is close to the ground, use a moisture barrier or ground cover to prevent weed growth and reduce moisture rising into the timber.
Take time to double-check all measurements, squareness, and the sturdiness of the frame before moving on. It’s much easier to fix structural issues at this stage than later in the process.
Installing the Decking Boards
Laying the decking boards is one of the most satisfying parts of the process because you’ll start to see your project take shape. Start from one edge, often near the spa itself, and work your way outwards.
Each board should be secured with screws or hidden fixings, depending on your design preference. Leave a consistent gap between boards (around 3–5mm) to allow for drainage and timber expansion. If you’re cutting boards to fit around the curves or corners of your spa, use a jigsaw and take your time to get a clean, tight fit.
As you install the boards, stand back from time to time to assess the look and alignment. This allows you to make adjustments before everything is fixed in place.
Finishing Touches for a Professional Look
Once the boards are in place, there are many ways to elevate the overall look and functionality of your deck. Adding timber steps makes access easier and creates a natural flow into the space. Built-in benches or planters can add interest and useful seating. To maintain the beauty and functionality of your deck, consider applying a protective sealant or stain to the timber every few years. Regular cleaning and inspection for loose boards or rusting fasteners will also help keep your deck in top condition.
Consider integrating outdoor lighting, such as solar deck lights or low-voltage LED strips, for a soft glow that makes your spa area usable at night. Privacy screens made from slatted timber or bamboo can turn your deck into a more intimate retreat, especially in smaller backyards or close neighbourhoods.
Finally, treat your deck with an oil or stain suitable for outdoor timber. Not only does this bring out the natural beauty of the wood, but it also protects it from UV damage and moisture. Re-coat it annually or as needed, depending on the product you use and your local climate.
Why Choose Jet Spas for Your Spa Pool?
Whether you’re building in Auckland or down south in Otago, Jet Spas makes it easy to upgrade your lifestyle. We specialise in high-quality spa pools Auckland families and families across NZ can enjoy year-round, and we deliver our full range across New Zealand.
Our spa pools are built to last, with ergonomic seating, reliable jet systems, and energy-efficient designs that work well in all climates. With the right planning, they pair beautifully with timber decks and other custom surrounds, giving you a polished, resort-style result in your own backyard.
Create a Backyard Oasis with a DIY Spa Wooden Deck
Building a wooden deck around your spa pool is one of the most satisfying ways to personalise your outdoor space. With the right materials, a thoughtful design, and some elbow grease, you can craft a space that blends relaxation, beauty, and practical living. Take a look at our article on 5 ways to style your spa pool area too.
Whether you’re in the heart of Auckland or a quiet coastal town, Jet Spas gives you the foundation you need to create something special. So roll up your sleeves, break out the power tools, and start building your dream spa surround today.
Buy the Right Spa Pool
The right spa pool plays a major role in the overall look of your spa pool area. There are many different spa pools available, and we have some of the best in NZ. There are many different styles to choose from, so there should definitely be something for your taste.
Are you looking to buy the best spa pool in NZ? Feel free to browse the fantastic selection of spa pools that we offer here at Jet Spas, and don’t hesitate to contact our professional team if you have any questions.
Explore Jet Spas’ full range of spa pools, available Auckland-wide and across New Zealand, and turn your backyard into a true retreat.
FLEXIBLE SHIPPING. Jet Spas will deliver to your home, and even into place, anywhere in New Zealand.
Delivery Locations
Auckland | Hamilton | Tauranga | Whakatāne | Rotorua | Taupō | Gisborne | New Plymouth | Napier | Hastings | Whanganui | Palmerston North | Wellington and across New Zealand
