What Is The Difference Between Merbau Decking 140×19, 90×19 and 70X19mm
Choosing the right Merbau decking size is important when planning an outdoor decking project. The width and thickness of each board can affect the appearance, installation process, material requirements and overall cost of your deck.
At Outdeco Living, Merbau decking is available in different board sizes, including 70x19mm, 90x19mm and 140x19mm. While all three options have the same 19mm thickness, their different widths create different visual and practical characteristics.
This guide explains the differences between 70×19, 90×19 and 140×19 Merbau decking to help you choose the right board for your project.
Merbau Decking Sizes at a Glance
| Merbau Decking Size | Width | Thickness | Best Considered For |
|---|---|---|---|
| 70x19mm | 70mm | 19mm | Narrow-board appearance and detailed layouts |
| 90x19mm | 90mm | 19mm | Versatile residential decking |
| 140x19mm | 140mm | 19mm | Wider-board appearance and larger areas |
The main difference between these three options is board width. All three sizes are 19mm thick, while the width determines how much surface area each board covers and influences the final appearance of the deck.
For the full range and current product options, see our Merbau Decking category.
70x19mm Merbau Decking
70x19mm Merbau decking has a 70mm board width and 19mm thickness.
The narrower width can create a more traditional decking-board appearance, with more individual boards visible across the finished surface. This can be useful when you want greater visual definition between the boards.
Key characteristics
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70mm board width
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19mm thickness
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Narrower board profile
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Can create more visible board lines
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Suitable for decking designs where a narrower board appearance is preferred
If you are specifically looking for this size, see the 70x19mm Merbau decking product page.
90x19mm Merbau Decking
90x19mm Merbau decking provides a middle ground between the narrower 70mm board and the wider 140mm board.
Its 90mm width makes it a versatile option for many residential decking projects. It provides a balanced appearance without being as narrow as 70mm boards or as wide as 140mm boards.
Key characteristics
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90mm board width
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19mm thickness
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Versatile board profile
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Balanced appearance
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Suitable for a wide range of decking applications
For specifications and product information, visit our 90x19mm Merbau decking product page.
140x19mm Merbau Decking
140x19mm Merbau decking is the widest of the three options.
The wider board covers more surface area per board, which can create a more open and substantial appearance across the finished deck. It can also reduce the number of individual boards required across a given width compared with narrower boards.
Key characteristics
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140mm board width
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19mm thickness
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Wider board profile
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More surface coverage per board
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Creates a broader visual appearance
You can view the specifications and product information for 140x19mm Merbau decking.
What Is the Difference Between 70×19, 90×19 and 140×19?
The primary difference is the width of each board.
All three options have a 19mm thickness:
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70x19mm = 70mm wide × 19mm thick
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90x19mm = 90mm wide × 19mm thick
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140x19mm = 140mm wide × 19mm thick
The width affects the visual appearance of the finished deck and how many boards are required to cover a particular area.
70x19mm vs 90x19mm
The 70mm board is narrower, so more boards will generally be visible across the same deck width. The 90mm board provides a slightly wider appearance and can offer a balanced option for residential projects.
90x19mm vs 140x19mm
The 90mm board provides a more traditional medium-width appearance, while the 140mm board creates a broader look and covers more surface area per board.
70x19mm vs 140x19mm
These are the narrowest and widest options in the range. The 70mm board produces more visible board lines, while the 140mm board provides a wider, more substantial appearance.
How Does Board Width Affect Decking Installation?
Board width can affect the installation process because wider boards cover more surface area than narrower boards.
For example, a 140mm-wide board covers more width with each individual board than a 70mm-wide board. The exact number of boards required will depend on the deck dimensions, board spacing, layout and installation method.
However, board width should not be the only factor when selecting your decking. Your deck design, joist spacing, installation requirements and project specifications should also be considered.
Which Merbau Decking Size Should You Choose?
The right size depends on the appearance you want and the requirements of your project.
Choose 70x19mm if:
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You prefer a narrower board appearance.
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You want more visible board lines.
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The design suits narrower decking boards.
Choose 90x19mm if:
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You want a versatile medium-width board.
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You prefer a balanced appearance.
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You are looking for a commonly useful option for residential decking projects.
Choose 140x19mm if:
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You prefer a wider board appearance.
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You want more surface coverage from each board.
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You are working on a larger decking area where a wider-board design suits the project.
If you are unsure which option is suitable, compare the available products in our Merbau Decking range.
Why Choose Merbau for Decking?
Merbau is a popular hardwood choice for outdoor decking because of its natural appearance and durability.
It is known for its rich reddish-brown colour and distinctive grain. When properly installed and maintained, Merbau can provide a durable and attractive outdoor surface.
Important characteristics include:
Durability
Merbau is a hardwood commonly selected for outdoor applications because of its durability and natural resistance characteristics.
Appearance
The timber has a naturally rich colour and grain pattern that can create a warm, premium appearance in outdoor spaces.
Outdoor suitability
Merbau is widely used for decking and other outdoor timber applications. Proper installation and ongoing maintenance are important for long-term performance.
Maintenance
Like other natural timber decking products, Merbau can change appearance over time as it is exposed to sunlight and weather. Cleaning and appropriate timber maintenance can help preserve its appearance.
Does a Wider Merbau Decking Board Mean a Better Deck?
Not necessarily.
A wider board is not automatically better than a narrower board. The best option depends on your deck design, project requirements, preferred appearance and installation considerations.
For example, you may prefer the more defined appearance of 70mm boards, the balanced profile of 90mm boards, or the broader appearance of 140mm boards.
The important thing is to select the size that suits your specific project rather than choosing a board based only on width.
Merbau Decking Size and Cost
Board size can influence the amount of timber required and the overall project cost, but the final price depends on several factors.
These can include:
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Total deck area
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Board size
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Timber grade
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Required lengths
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Quantity purchased
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Delivery requirements
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Installation costs
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Project design
For current product availability and pricing, visit the Merbau Decking category.
Frequently Asked Questions
What are the available Merbau decking sizes?
The available sizes discussed in this guide are 70x19mm, 90x19mm and 140x19mm. All three have a 19mm thickness but different board widths.
Is 90x19mm Merbau decking wider than 70x19mm?
Yes. 90x19mm boards are 20mm wider than 70x19mm boards, while both have a 19mm thickness.
Is 140x19mm Merbau decking the widest option?
Among the three sizes discussed here, yes. The 140x19mm board is wider than both the 90x19mm and 70x19mm options.
Which Merbau decking size is best?
There is no single best size for every project. The choice depends on your preferred appearance, deck design, project requirements and installation considerations.
Does Merbau decking require maintenance?
Yes. Natural timber decking should be cleaned and maintained appropriately to help preserve its appearance and performance over time.
Choose the Right Merbau Decking Size
The main difference between 70x19mm, 90x19mm and 140x19mm Merbau decking is the board width. All three options have a 19mm thickness, but each creates a different visual effect and can suit different decking designs.
For narrower boards, consider 70x19mm. For a versatile medium-width option, consider 90x19mm. For a wider-board appearance, 140x19mm may be suitable.
Explore the complete Merbau Decking range at Outdeco Living and compare the available sizes for your project.
Explore Related Merbau Products
If you are planning a complete outdoor timber project, you can also explore: