Best Decking Timber NZ: Compare Types, Prices & Tips

Welcome to your go-to guide for choosing the right decking timber in NZ. Whether you’re planning a summer BBQ spot or just want to upgrade your outdoor space, picking the right timber makes all the difference. With so many options, pine, kwila, vitex, and more, it’s easy to feel overwhelmed. This guide breaks down each type, compares costs, and helps you match the best wood to your home, budget, and lifestyle. You’ll also get tips on maintenance, buying advice, and a quick look at how timber stacks up against composite alternatives. Let’s make your decking project simple, smart, and stress-free.

The best decking timber in NZ depends on your budget, style, and climate. Pine is the most affordable and widely used, while hardwoods like Kwila and Vitex offer greater durability and a premium look. Vitex is a popular eco-friendly option with low tannin bleed. For a balance of price and performance, pine suits most Kiwi homes, but hardwoods are ideal for long-term strength and aesthetics.

Why Timber Decking Is Popular In NZ

Timber decking remains one of the most trusted choices for outdoor spaces across New Zealand. Whether you’re upgrading your backyard, building a new deck, or refreshing an existing one, timber stands out for its natural appeal, practical benefits, and adaptability to local conditions.

Timber offers a warm, organic look that blends well with the natural environment. Unlike composite or synthetic materials, timber feels real underfoot. It develops character over time, especially when exposed to sunlight and weather. This weathering adds to its charm, giving each deck a unique, lived-in look that Kiwis appreciate.

New Zealand’s outdoor lifestyle plays a major role in timber decking’s popularity. Families spend a lot of time outside, hosting barbecues, relaxing in the sun, or entertaining guests. Timber decking provides a smooth, barefoot-friendly surface that feels comfortable and inviting. It’s ideal for everything from small patio setups to large, multi-level entertaining areas.

Many timber options used in NZ are sourced from sustainable forests. Products like FSC-certified pine or responsibly harvested Vitex offer peace of mind for eco-conscious homeowners. Some timber merchants also provide locally grown wood, which helps reduce environmental impact and supports local businesses.

Maintenance is another reason why homeowners choose timber. With regular cleaning and oiling, most timber decks can last for decades. Treated pine is easy to care for, while hardwoods like Kwila and Garapa hold up well under pressure. As long as you follow a consistent upkeep routine, your deck will stay in great shape year-round.

Lastly, timber performs well in New Zealand’s mixed climate. From coastal areas with salty air to inland regions that get a lot of rain or sun, timber, when properly treated, holds up against moisture, UV rays, and wind. Choosing the right type of timber for your specific region helps extend the lifespan of your deck and reduce repair costs down the line.

Timber decking continues to be a top choice in NZ because it fits the lifestyle, looks great, and lasts when properly looked after. Whether you’re after practicality or style, timber checks all the boxes.

Types Of Decking Timber In NZ

Choosing the right decking timber in New Zealand depends on your budget, climate, and the overall look you want for your outdoor space. Timber decking is popular across the country due to its natural appeal and ability to withstand diverse weather conditions. Below is a breakdown of the most common types of decking timber used in NZ, along with their characteristics, pros, and cons.

Pine

Pine is the most affordable decking timber option in New Zealand. It’s widely available across the country and often treated to withstand decay, rot, and insect damage. Treated pine is light in color, easy to work with, and ideal for budget-conscious homeowners or large-scale decking projects.

Pros:

• Low cost and readily available
• Easy to cut, drill, and install
• Accepts stains and paints well

Cons:

• Less durable than hardwoods
• Requires frequent maintenance
• Can warp or split over time if not sealed properly

Kwila (Merbau)

Kwila is a dense tropical hardwood that delivers a rich, reddish-brown color and long-lasting durability. It’s a popular choice for premium decks due to its strong resistance to wear. However, it tends to leach tannins, especially in the first few months, which can stain nearby surfaces like pavers or concrete if not sealed.

Pros:

• Strong and long-lasting
• Rich, attractive color
• Excellent resistance to insects and decay

Cons:

• Higher price point
• Needs sealing to prevent tannin bleed
• Some environmental concerns if not sustainably sourced

Vitex

Vitex is a light-colored, sustainably sourced Pacific hardwood that has grown in popularity in NZ. It’s known for its clean look, moderate density, and low tannin leaching, making it a practical choice for homeowners who want something durable without the heavy bleeding of darker woods like Kwila.

Pros:

• Sustainable and eco-friendly
• Minimal tannin leaching
• Naturally resistant to decay

Cons:

• May require sealing to maintain appearance
• Slightly softer than Kwila or Garapa
• Mid-range price may not suit all budgets

Garapa

Garapa is a light, honey-colored hardwood that offers impressive durability and a smooth finish. It’s highly resistant to rot, moisture, and insects, making it well-suited for NZ’s varied climate. Over time, Garapa weathers to a soft silver-grey if left untreated, appealing to those who prefer a natural, aged look.

Pros:

• Excellent durability
• Consistent grain and smooth surface
• Resistant to weather and pests

Cons:

• Higher initial cost
• May darken if not sealed
• Can become slippery when wet if not grooved or textured

Other Timber Options

Some homeowners opt for alternative timber or composite materials. Macrocarpa, a locally grown NZ softwood, is valued for its rustic charm and moderate durability, though it’s not as long-lasting as tropical hardwoods. Jarrah, another hardwood option, is durable but comes at a premium price and is harder to source. Composite timber, though not natural wood, combines wood fibres and plastic to create a low-maintenance alternative that mimics the appearance of timber.

Pros of alternatives:

• Composite is low maintenance and weather-resistant
• Macrocarpa offers a local and sustainable option
• Jarrah provides high-end durability and color

Cons of alternatives:

• Composite lacks the natural texture of real wood
• Macrocarpa may not last as long as treated timber
• Jarrah is expensive and not always available in NZ

Quick Comparison Table

Timber Type	Price Range	Durability	Maintenance	Appearance	Sustainable Option
Pine	Low	Moderate	High	Light tone	Yes (if NZ-grown)
Kwila	High	Very High	Medium	Rich red-brown	Only if certified
Vitex	Medium	High	Low	Pale, clean look	Yes
Garapa	Medium-High	Very High	Low	Golden tone	Yes
Macrocarpa	Medium	Moderate	Medium	Rustic grain	Yes
Jarrah	High	Very High	Medium	Deep red	Limited sourcing
Composite	High	Very High	Very Low	Wood-like	Varies

This breakdown helps you compare your options based on your budget, style preference, and long-term maintenance expectations. Choose timber that fits your lifestyle and complements your home’s outdoor space. If you’re unsure, visit a local timber supplier and ask for samples to see how the wood looks and feels in natural light.

How To Choose The Best Decking Timber

Choosing the right decking timber in New Zealand goes beyond just picking what looks good. It’s about finding a timber type that fits your lifestyle, location, and long-term needs. Below are five key factors you should consider before making your final decision.

Budget

Your budget plays a big role in the type of timber you can afford. Pine is one of the most cost-effective options in NZ and is widely used for residential decks. It’s treated to resist moisture and pests, making it a good starting point for budget-conscious homeowners. On the other hand, hardwoods like Kwila or Vitex come with a higher price tag but offer better durability, less warping, and a more premium look. While you might pay more upfront for hardwood, it can save you money on maintenance and replacements in the long run.

Aesthetic Preferences

Timber comes in a variety of tones and grain patterns, so it’s important to choose a type that complements your home’s exterior and your personal taste. Pine has a lighter color that can be stained or painted to suit different styles. Kwila offers a rich, reddish-brown tone that gives a warm, tropical look. Vitex, known for its pale straw-like color, weathers to a soft silver if left untreated. Your deck should feel like a natural extension of your living space, so take time to visualize how different timbers will look once installed.

Maintenance Level

Some timbers require more upkeep than others. Pine, for example, may need more frequent staining or oiling to keep it protected from the elements. Hardwoods like Garapa or Vitex are naturally dense and resistant to decay, which means less maintenance over time. If you prefer a low-maintenance outdoor space, investing in a durable hardwood could be worth it. Keep in mind that no matter the timber, regular cleaning and re-oiling are essential for long-term performance.

Sun/Shade Exposure

The amount of sunlight your deck gets should influence your timber choice. Decks exposed to full sun can heat up quickly, which may cause some timber types to expand or crack. Lighter-colored woods like Vitex reflect heat better than darker hardwoods. For shaded areas, moisture retention can lead to mold or moss buildup, so you’ll want timber that resists moisture and rot. Always match the timber to the conditions of your property to reduce wear and prolong lifespan.

Environmental Impact

If sustainability matters to you, choose timber that’s responsibly sourced. Look for certifications such as FSC (Forest Stewardship Council) or suppliers that offer legally harvested hardwoods. Vitex is a great example of a timber that’s both durable and eco-conscious. Pine, especially when sourced locally, also has a smaller carbon footprint. Avoid imported woods that lack sustainability credentials, as they often contribute to illegal logging and deforestation.

Tip: If you live near the coast, consider hardwoods for better salt resistance. Salt air can accelerate wear and corrosion, and hardwoods like Garapa or Vitex hold up better than softwoods in these conditions.

By weighing these five factors, budget, aesthetics, maintenance, exposure, and environmental impact, you’ll be able to choose a decking timber that not only looks great but also stands the test of time in your specific environment.

Decking Timber Prices In NZ

When planning a timber deck in New Zealand, one of the first questions that comes up is cost. Understanding the price of decking timber helps you choose the right material for your budget and long-term goals. Prices vary depending on the type of timber, the quality, and whether you plan to install it yourself or hire a professional.

Average Timber Costs Per Square Metre

Here’s a general breakdown of what you can expect to pay per square metre for popular decking timbers in NZ:

Timber Type	Price Range (Per m²)	Key Features
Treated Pine	$30 – $50	Affordable, easy to find, requires regular maintenance
Kwila (Merbau)	$70 – $100	Durable hardwood, rich tone, can leach tannins
Vitex	$60 – $90	Sustainable, light colour, low tannin bleed

Treated pine is the most budget-friendly option and widely available across New Zealand. It’s treated to resist decay but may require frequent maintenance. Kwila offers a more premium appearance and longer lifespan but tends to cost more due to its hardwood nature. Vitex sits in the middle, it’s a sustainable hardwood that doesn’t bleed heavily and weathers well, making it a solid all-rounder.

DIY vs Professional Installation

Installation adds to the overall cost. If you’re confident with tools and planning, a DIY deck can save you hundreds or even thousands of dollars. But keep in mind that mistakes or miscalculations can be expensive in the long run.

• DIY installation: Material cost only + basic tools. Expect to pay roughly $30 – $60/m² for just the timber and supplies.
• Professional installation: You’ll pay for labour, often around $300 – $500 per square metre total, depending on the complexity, site access, and timber used.

Hiring a qualified builder ensures proper structure, code compliance, and faster results. It also comes with fewer headaches if you’re not confident with construction.

Long-Term Costs To Consider

The upfront cost is just part of the picture. Different timbers come with different maintenance needs and lifespans.

• Pine decking needs regular oiling or staining, about once every 12–18 months. If neglected, it can crack, warp, or rot faster. Expect a lifespan of 15–20 years with good care.
• Kwila decking requires sealing to reduce tannin bleed and occasional oiling. It lasts 25–40 years depending on exposure.
• Vitex decking is low-maintenance and resistant to leaching, with a similar lifespan to Kwila when maintained properly.

If you’re looking to reduce long-term costs, investing in hardwood may be worth it despite the higher upfront price. It needs less frequent upkeep and tends to last much longer in harsh NZ weather.

By weighing the initial cost, installation method, and ongoing maintenance, you’ll be better prepared to make a smart choice that fits your budget and lifestyle.

Timber Decking Maintenance Tips

Timber decking can transform your outdoor area, but it needs proper care to stay in good condition. Without regular maintenance, even the most durable timber can lose its color, warp, or develop mold. Below are key maintenance tips every homeowner in New Zealand should follow to keep their timber deck looking great and performing well all year round.

Regular Cleaning

Cleaning your deck is one of the simplest yet most effective ways to extend its lifespan. Dirt, leaves, and moisture create the perfect environment for mold and algae. These not only make your deck look dirty but also create slippery surfaces and speed up decay. Use a broom to remove loose debris weekly. At least twice a year, scrub the deck with a soft-bristle brush and a deck cleaning solution or mild detergent. Avoid using harsh chemicals or high-pressure washers, as these can damage the wood fibers.

Re-Oiling Or Staining

Timber needs protection from the sun and rain. Re-oiling or staining your deck adds a barrier that helps repel moisture and blocks UV damage. Most timber decks in New Zealand should be oiled every 12 to 18 months, depending on the weather conditions and exposure to direct sunlight. Before applying oil or stain, always clean the deck thoroughly and let it dry. Use a quality decking oil that matches your timber type, and apply it evenly with a brush, roller, or pad for best results.

Inspecting For Mold Or Warping

Decks are constantly exposed to the elements. Over time, timber can absorb moisture, especially in shaded or poorly ventilated areas. This leads to mold, mildew, or even warping. Check your deck every few months for soft spots, dark patches, or boards that feel uneven or loose. If you notice mold, treat it with a specialized cleaner. For warped boards, it may be necessary to sand, replace, or re-secure them to prevent further damage.

Dealing With Tannin Stains

Certain hardwoods like Kwila release tannins, natural compounds that can cause reddish-brown stains on nearby surfaces like concrete, pavers, or walls. These tannin stains often appear after rain. To manage this, seal the timber before installation or shortly after. If staining occurs, use a tannin remover product designed for timber decks. It’s also a good idea to rinse the deck during the first few weeks after installation to flush out excess tannins.

How Often Should You Oil Your Deck?

You should oil your deck every 12 to 18 months, but this depends on your timber type, location, and weather conditions. If your deck gets full sun or is exposed to heavy rain, you may need to oil it more often. A quick test: pour a few drops of water on the deck. If it soaks in rather than beads on the surface, it’s time to reapply oil. Regular oiling keeps the wood nourished, helps prevent cracking, and protects against fading.

By staying on top of these simple maintenance tasks, you can extend the life of your timber deck and keep it looking fresh for years to come. Whether you’re using pine, Kwila, Vitex, or another timber, consistent care makes a noticeable difference.

Timber Decking Vs Composite: Is It Worth Comparing?

When planning a new deck, many New Zealand homeowners ask the same question, should I choose timber or composite decking? While both options have their place, understanding the key differences in performance, appearance, cost, and environmental impact can help you make the right choice for your space.

Timber decking offers a classic, natural look that blends well with New Zealand’s outdoor lifestyle. The texture, warmth, and character of real wood are hard to replicate. Many Kiwis prefer the authentic feel underfoot and the way timber weathers over time. Depending on the wood you choose, like pine, Kwila, or Vitex, you get different color tones, grain patterns, and durability levels.

Composite decking, on the other hand, is a manufactured material made from wood fibers and recycled plastics. It’s designed to mimic the look of wood while offering greater resistance to moisture, fading, and insect damage. Composite boards often come in uniform sizes and colors, which may appeal to those who want a low-maintenance option that still looks modern and clean.

In terms of pricing, treated pine is generally the most affordable timber option, making it a popular choice for budget-conscious projects. Hardwood timbers like Kwila or Garapa cost more upfront but offer longer-lasting durability. Composite decking usually sits in the mid-to-high price range, and while it may have higher upfront costs, it can reduce maintenance expenses over time.

Eco-friendliness is another factor to consider. Many composite decking brands use recycled plastics and FSC-certified wood materials, making them a greener option in terms of material reuse. However, sustainably sourced timber, such as Vitex from certified forests, can also be an environmentally responsible choice. The key is to look for suppliers who are transparent about their sourcing and treatment processes.

Despite the rise of composite decking, timber remains a top choice for many Kiwis. Its natural beauty, wide availability, and the satisfaction of working with real wood continue to attract homeowners and builders alike. Whether you prefer the rustic charm of hardwood or the clean lines of treated pine, timber decking offers a timeless finish that works well in both traditional and modern NZ homes.

If you’re exploring both options, it’s worth comparing them based on your lifestyle, budget, and long-term goals. For some, the ease of a composite is appealing. For others, nothing beats the real thing, timber’s warmth, texture, and the sense of pride that comes from building with natural materials.

Where To Buy Decking Timber In NZ

Finding quality decking timber in New Zealand isn’t just about choosing the right wood, it’s also about knowing where to buy it. The source you choose can affect the quality, price, and availability of the timber you need for your project. Whether you’re building a new deck or upgrading an old one, here’s a helpful breakdown of where Kiwis usually shop for decking timber and what you should look out for before making a purchase.

Local Timber Merchants

Local timber yards are often the best place to start if you want expert advice and a hands-on look at what you’re buying. These suppliers typically stock a wide range of timber options suited to New Zealand’s climate. You’ll find everything from treated pine to premium hardwoods like Kwila and Vitex. Many local merchants source their timber ethically and understand the demands of NZ weather, making it easier to find decking timber that’s durable and fit for purpose. Local sellers also tend to offer flexible quantities, so whether you’re tackling a small DIY deck or a large outdoor area, you can order exactly what you need.

Big-Box Stores (Mitre 10, Bunnings)

Mitre 10 and Bunnings are two of the most accessible suppliers in NZ for decking timber. They offer competitive pricing, especially on popular options like H3.2-treated pine. These stores usually carry decking materials in standard lengths and profiles, which makes planning and ordering simple. You’ll also find decking oils, fasteners, and installation tools all in one place. For homeowners who prefer one-stop shopping or need quick access to stock, these chains provide convenience and nationwide availability. While the staff might not be specialists in decking, they’re often helpful for general guidance.

Online Timber Suppliers

Online suppliers have become a go-to option for many Kiwi homeowners and tradies. Websites now allow you to compare timber grades, prices, and delivery options without leaving your home. This is especially useful if you’re outside urban areas or want access to a broader range of hardwoods. Many online timber suppliers in NZ offer nationwide shipping, bulk pricing, and detailed specifications for each timber type. Some platforms even provide virtual consultations or phone support, giving you the best of both worlds, convenience and professional advice.

What To Check Before Buying

Before placing your order, take a moment to assess a few key things that will impact your decking project long term.

• Timber Grade: Look for structural or appearance grade timber. Higher-grade timber usually has fewer knots and more uniform grain, making it more attractive and durable for decking.
• Treatment Level: In NZ, decking timber should be treated to resist rot and insects. Common ratings include H3.2 for pine, which is suitable for above-ground outdoor use. Make sure the timber is properly treated for your climate and deck design.
• Moisture Content: Timber should be kiln-dried to minimize warping once it’s installed. Ask the supplier if the timber is ready for installation or needs further drying time.
• Sustainability Certification: If environmental impact matters to you, look for FSC-certified or PEFC-certified products. These indicate the timber comes from responsibly managed forests.
• Surface Finish: Some decking timber comes pre-grooved, pre-oiled, or pre-sanded. Check whether the timber is ready to install or needs prep work. This can affect your labor time and final results.

Buying decking timber in NZ is about more than price. Quality, treatment, and supplier reliability all play a role in how your deck performs over time. Take the time to compare your options and ask questions before committing to a supplier. Your deck will look better and last longer when you start with the right timber from the right source.

Ready to Build Your Dream Deck? Explore top-quality decking timber and expert advice tailored for Kiwi homes. Visit us to get started today.

FAQs: About Best Decking Timber In NZ

Conclusion

Choosing the right decking timber in NZ doesn’t have to be complicated. From budget-friendly treated pine to durable hardwoods like Kwila and Vitex, each timber type offers its own strengths depending on your needs and environment. While pine is affordable and easy to find, hardwoods bring longer-lasting value and natural beauty with less frequent maintenance if properly sealed. It’s also important to think about long-term care, as regular cleaning and oiling can extend the life of any deck. If you’re unsure which option suits your home or budget, it’s perfectly okay to ask for help. Visiting a local timber supplier gives you the chance to compare materials in person and ask questions. You can also speak with a decking contractor to get expert advice tailored to your space, lifestyle, and the local climate. Taking the time to gather the right information will help you make a confident choice and enjoy a deck that lasts for years.