Shop Merbau Decking
Merbau Decking
A-grade kiln-dried Merbau decking in 70 × 19mm, 90 × 19mm and 140 × 19mm sizes, supplied to homeowners, builders, landscapers and tradies across Melbourne.
Outdeco Living supplies Merbau decking timber for residential, commercial and outdoor construction projects, with multiple board sizes and lengths available subject to current stock. Whether you are building a new backyard deck, replacing existing boards, creating an entertaining area or working on a larger construction project, our Merbau decking range gives you several board-width options to suit the project.
Check the available sizes, current product prices and stock options below, then contact our team if you need help selecting the right Merbau decking for your project.
Available Merbau Decking
70 × 19mm Merbau Decking
A narrower decking board suited to projects where a smaller board width is preferred.
90 × 19mm Merbau Decking
A versatile board size for residential decks, patios, entertaining areas and other outdoor applications.
140 × 19mm Merbau Decking
A wider decking board that provides greater coverage per board and a broader-board appearance.
Merbau Decking Sizes & Prices
Choosing the right board size depends on the design of your deck, the appearance you want, the joist layout and the amount of timber required.
| Merbau decking size | Best suited to | Current product page |
70 × 19mm | Narrower board layouts, detailed designs and feature areas | View 70 × 19mm |
90 × 19mm | Residential decks, patios and entertaining areas | View 90 × 19mm |
140 × 19mm | Wider-board designs, larger decks and outdoor living areas | View 140 × 19mm |
Prices vary according to board size, selected length, stock and availability. Visit the relevant product page for the current price and available lengths.
Why Choose Merbau Decking?
Merbau is a dense hardwood that has been widely used for outdoor decking in Australia. Its natural colour, strength and durability make it a popular choice for homeowners, builders and landscaping projects.
Natural Hardwood Appearance
Merbau has a distinctive reddish-brown to deep brown appearance with natural variation between boards. This gives a finished deck the character of genuine timber rather than a uniform manufactured surface.
Durable Outdoor Timber
Merbau is a dense hardwood with good natural durability for above-ground outdoor applications. Correct installation, suitable drainage and regular maintenance all contribute to long-term decking performance.
Suitable for Australian Outdoor Areas
Merbau decking is commonly used for outdoor areas exposed to sun, rain and changing temperatures. For any project with specific structural, bushfire or building requirements, confirm the applicable Australian Standards and local requirements before installation.
Several Board Widths
Our range includes 70 × 19mm, 90 × 19mm and 140 × 19mm Merbau decking, allowing you to choose a board width that suits your design and project requirements.
Suitable for Residential and Trade Projects
We supply Merbau decking to DIY homeowners, builders, landscapers, decking contractors and tradies, with options for both smaller projects and larger timber requirements.
What Is Merbau Decking?
Merbau decking is hardwood decking timber made from Merbau, a tropical hardwood species commonly associated with the name Kwila. The timber is valued for its density, natural durability, rich colour and distinctive grain.
Fresh Merbau boards can range from golden and orange-brown through to reddish-brown and deeper brown tones. Exposure to sunlight and weather gradually changes the appearance of untreated timber, while suitable decking oils can help maintain a deeper colour.
Merbau naturally contains tannins and oils. These can contribute to its durability but may also cause tannin staining or leaching during the early weathering period.
Merbau Decking Specifications
| Specification | Merbau decking |
| Timber | Merbau hardwood |
| Common timber name | Merbau / Kwila |
| Board thickness | 19mm |
| Available widths | 70mm, 90mm and 140mm |
| Finish | Natural timber |
| Suitable applications | Decks, patios, entertaining areas, pool surrounds and outdoor projects |
| Availability | Subject to current stock and selected length |
Always confirm the exact product specifications, available lengths and current stock on the relevant product page before ordering.
How to Choose the Right Merbau Decking Size
The three main board widths in our range serve different project requirements.
70 × 19mm Merbau Decking
The 70mm board is a narrower option for projects where a smaller board width suits the design. It can work well for detailed layouts, smaller areas and feature applications.
90 × 19mm Merbau Decking
The 90mm board provides a versatile middle-width option for many residential decking projects, patios and outdoor entertaining areas.
140 × 19mm Merbau Decking
The 140mm board provides wider coverage and a broader-board appearance. It is available in multiple lengths, subject to stock.
If you are unsure which board width suits your project, contact our team with your deck dimensions and intended use.
How Much Merbau Decking Do I Need?
The quantity required depends on:
- Deck length and width
- Selected board width
- Installation gap between boards
- Board lengths available
- Stairs and picture framing
- Angles and unusual deck shapes
- Expected cutting waste
For a simple rectangular deck, calculate the total deck area first:
Length × Width = Deck area in square metres
The effective coverage of each decking board depends on the board width and installation gap. Allow additional material for cuts, offcuts and layout requirements rather than ordering only the exact calculated quantity.
For larger or more complex projects, send your measurements to our team so we can help you work out the approximate timber requirement.
Merbau Decking Installation
Correct installation helps minimise movement, surface problems and premature deterioration.
Before installation:
- Check that the substructure and joist spacing are suitable for the selected board.
- Allow timber to acclimatise where appropriate for the project conditions.
- Provide adequate drainage beneath the deck.
- Use suitable exterior-grade fixings.
- Maintain the recommended spacing between boards.
- Keep the underside of the decking adequately ventilated.
- Follow current building requirements and the decking manufacturer’s recommendations.
For elevated, structural or specialist deck projects, use a qualified decking professional and confirm the applicable requirements before construction.
Merbau Decking Maintenance
Merbau decking requires routine care to maintain its appearance and support long-term performance.
Regular maintenance can include:
- Sweeping dirt and leaves from the deck
- Cleaning the surface when required
- Checking for standing water or drainage problems
- Removing stains promptly
- Applying a suitable decking oil when required
- Inspecting fixings and boards periodically
If you want to retain more of Merbau’s original reddish-brown colour, regular cleaning and suitable oiling are generally recommended. If left untreated, Merbau will naturally weather towards a silver-grey appearance over time.
Maintenance frequency depends on exposure, traffic, weather and the finish selected.
Merbau Decking Tannin Bleeding
One characteristic of new Merbau timber is tannin leaching.
Merbau naturally contains water-soluble tannins. During the early period after installation, rain or washing can carry tannins from the timber onto nearby concrete, paving, rendered surfaces or other light-coloured materials.
This can leave reddish-brown staining around the deck.
Tannin bleeding is a natural characteristic of the timber and does not automatically indicate a defect.
To reduce the risk:
- Clean the new decking according to the recommended preparation method.
- Rinse surrounding surfaces when tannin runoff occurs.
- Avoid allowing water to sit against light-coloured paving or walls.
- Maintain good drainage around the deck.
- Follow the instructions of the decking oil or cleaning product you use.
Merbau Decking Pros and Cons
Understanding both the benefits and maintenance requirements can help you decide whether Merbau is suitable for your project.
Benefits of Merbau Decking
- Natural hardwood appearance
Rich timber colour and natural grain create a genuine hardwood finish. - Good outdoor durability
Merbau is a dense hardwood suited to many above-ground outdoor applications when correctly installed and maintained. - Several board widths
Choose from 70 × 19mm, 90 × 19mm and 140 × 19mm options. - • Suitable for residential and commercial projects
The timber can be used across a range of outdoor applications. - Natural termite resistance
Merbau has natural resistance to termite attack. - Can be finished with decking oil
Suitable oiling can help maintain colour and protect the timber from weather exposure.
Things to Consider
• Tannin leaching
New Merbau can release tannins, which may stain nearby surfaces.
New Merbau can release tannins, which may stain nearby surfaces.
• Ongoing maintenance
Cleaning and periodic oiling are recommended when you want to maintain the original timber appearance.
Cleaning and periodic oiling are recommended when you want to maintain the original timber appearance.
• Natural colour variation
Boards can vary in colour and grain because Merbau is natural timber.
Boards can vary in colour and grain because Merbau is natural timber.
• Weathering
Untreated timber will gradually change colour when exposed to UV and weather.
Untreated timber will gradually change colour when exposed to UV and weather.
Merbau Decking vs Composite Decking
Merbau and composite decking provide different characteristics, so the right choice depends on your preferred appearance, maintenance requirements and project budget.
| Feature | Merbau Decking | Composite Decking |
| Material | Natural hardwood timber | Manufactured composite material |
| Appearance | Natural grain and colour variation | More consistent appearance |
| Maintenance | Cleaning and periodic oiling | Generally lower routine maintenance |
| Weathering | Naturally changes colour over time | Depends on the product |
| Repairs | Individual timber boards can generally be replaced | Product dependent |
| Feel | Natural timber underfoot | Manufactured decking surface |
Choose Merbau if you want genuine hardwood timber, natural grain and the appearance of a traditional timber deck.
Merbau Decking for Melbourne Projects
Outdeco Living supplies Merbau decking to customers across Melbourne from its timber supply locations in Campbellfield and Dandenong South.
Our customers include:
- Homeowners
- Builders
- Decking contractors
- Landscapers
- Tradies
- Commercial contractors
- DIY customers
Delivery availability depends on product, quantity and destination. Contact our team to confirm delivery options and current stock for your project.
Bulk Merbau Decking Supply
If you require a larger quantity of Merbau decking, speak with our team before placing your order. We supply builders, trades and larger projects and can discuss available lengths, quantities, stock and delivery requirements.
For bulk requirements of 1000 linear metres or more of a particular set length, ask our team about the current supply and turnaround options
Merbau Decking Prices
Merbau decking prices vary according to board width, selected length, stock and availability.
Our current product range includes:
- 70 × 19mm Merbau Decking
- 90 × 19mm Merbau Decking
- 140 × 19mm Merbau Decking
Current prices and available lengths are displayed on the individual product pages.
If you have a genuine competitor quote for a comparable Merbau decking product, contact our team, and we will assess the quote.
Why Buy Merbau Decking from Outdeco Living?
Outdeco Living is a wholesaler and direct timber supplier serving homeowners, builders, landscapers and trades across Melbourne.
When you buy from us, you can access:
- A-grade kiln-dried Merbau decking
- 70 × 19mm, 90 × 19mm and 140 × 19mm options
- Multiple board lengths, subject to stock
- Wholesale and trade supply
- Bulk-order support
- Melbourne delivery options
- Physical timber supply locations
- Current product pricing online
Our team can help you compare board widths, check availability and select the most suitable Merbau decking option for your project.
Frequently Asked Questions About Merbau Decking
What is Merbau decking?
Merbau decking is natural hardwood decking timber valued for its rich colour, density and outdoor durability. It is commonly used for residential and commercial outdoor decking projects.
Is Merbau good for decking?
Yes. Merbau is a popular hardwood decking timber because of its natural durability, strength, appearance and resistance to common outdoor conditions when correctly installed and maintained.
What sizes of Merbau decking are available?
Outdeco Living currently offers 70 × 19mm, 90 × 19mm and 140 × 19mm Merbau decking options, with available lengths varying by product and stock.
What is the best Merbau decking size?
There is no single best size for every project. A 70mm board provides a narrower profile, 90mm is a versatile option for many residential decks, and 140mm provides wider board coverage. Your deck design, joist layout and preferred appearance should guide the choice.
How much does Merbau decking cost?
The price depends on the board width and selected length. Outdeco Living lists current pricing on the individual 70 × 19mm, 90 × 19mm and 140 × 19mm product pages.
Does Merbau decking need oiling?
Oiling is recommended if you want to retain more of the timber’s original colour and provide protection from weather exposure. Without regular oiling, Merbau naturally weathers towards a silver-grey appearance.
Does Merbau decking leak tannins?
New Merbau can release tannins when exposed to rain or washing. This can create reddish-brown staining on nearby light-coloured surfaces. Tannin leaching is a natural characteristic of the timber and generally reduces as the timber weathers.
How long does Merbau decking last?
A properly installed and maintained Merbau deck can provide many years of outdoor service. Actual service life depends on installation, exposure, drainage, maintenance and the conditions at the property.
Is Merbau decking suitable for Melbourne?
Yes. Merbau is widely used for outdoor decking in Melbourne. Correct installation, drainage and ongoing maintenance are important because Melbourne decks experience changing weather and seasonal moisture.
Can Merbau decking be used around a pool?
Yes. Merbau is commonly used around outdoor pool areas. The deck should be designed with suitable drainage, fixing and maintenance practices for the pool environment.
What lengths does Merbau decking come in?
Available lengths vary by board size and stock. The individual Outdeco Living product pages show the current length options for 70 × 19mm, 90 × 19mm and 140 × 19mm Merbau decking.
Can builders and tradies buy Merbau decking from Outdeco Living?
Yes. Outdeco Living supplies Merbau decking to builders, tradies, landscapers, contractors and DIY customers. Bulk and trade requirements can be discussed with the sales team.
Where can I buy Merbau decking in Melbourne?
Outdeco Living supplies Merbau decking from its Melbourne-area timber locations and offers delivery options depending on the product, order quantity and destination.
Can I buy Merbau decking directly from a supplier?
Yes. Outdeco Living supplies Merbau decking directly to homeowners, builders, tradies and other customers.
Buy Merbau Decking
Planning a new deck or replacing existing decking? Compare our 70 × 19mm, 90 × 19mm and 140 × 19mm Merbau decking options to find the board width that suits your project.
Check current prices and stock on the relevant product page, or contact Outdeco Living for help with quantities, lengths, bulk supply and delivery.
Need a larger quantity? Contact our team with your required size, length and approximate linear metres so we can check current availability and supply options.