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The Daily Insight

What is the best timber for decking

Author

Ava Robinson

Updated on April 20, 2026

In general, pressure-treated timber is one of the best options for decking frames due to its cheap cost. Softwoods, such as Cedar and Redwood, are good choices for framing as well, especially if you want a more sustainable and safer option.

What is the most durable decking timber?

  • Ironbark is the most durable hardwood for decking and offers longevity. It is extremely fire, termite and rot resistant. …
  • Spotted Gum is widely used for decking on account of its durability and strength. …
  • Yellow and red stringybark are durable enough for outdoor use.

What is the best wood for decking UK?

  1. European Oak. Timeless, beautiful, high performance — you simply can’t go wrong with oak. …
  2. Iroko. This is the first of two tropical hardwoods we’ll mention. …
  3. Balau. Much like Iroko, Balau oozes tropical class, as well as having exceptional technical performance. …
  4. Thermowood. …
  5. Siberian Larch.

What is the best decking timber to use in Australia?

Hardwoods Hardwoods are a great option for Australian decks – they’re extremely durable, highly resilient and can look, feel and even smell great. Popular hardwoods include Jarrah, Spotted Gum, and Merbau, which is the most common timber decking in Australia.

Is 4x2 OK for decking?

4 x 2 Timber Rail / Joist These decking joists are the most common sized framing timber for decking. They provide a solid structure for fixing your decking boards too. When making your decking frame you should use a 400mm spacing between your timber joists.

Which timber is best for outdoor?

  • Teak. Everybody knows about teak, possibly the ideal wood for outdoor furniture. …
  • European Oak. There’s a reason why oak is a perennially-popular choice for the woodworkers, particularly those involved in outdoor projects. …
  • Western Red Cedar / Siberian Larch. …
  • Iroko.

What wood is used for decks?

Wood Materials The three common choices when it comes to wood decks are redwood, cedar and pressure-treated wood that can be made of various types of wood species. Redwood and cedar are both naturally insect and rot resistant and have a natural look, but each has its own inherent issues.

What is the most durable decking material?

Composite decking, from brands such as Trex and TimberTech, is made from a blend of recycled plastic (polyethylene, polypropylene, or PVC) mixed with wood fibers (like wood chips or sawdust). Not only does the durable synthetic material resist warping, it also holds strong against rot and insect infestations.

Is Ironbark good for decking?

Ironbark has a very high natural resistance to rot due to chemistry of the tree which helps fight off fungus. … Ironbarks popularity is ever increasing with more and more homes using the timber for decks, landscaping and cladding due to its high durability and fire resistance.

Which type of decking is best?
  • #1 Pressure-Treated Wood. Among the various types of wood decking, pressure-treated lumber is the most common. …
  • #2 Cedar Decking. Cedar is commonly regarded as a higher-quality material than pressure-treated lumber. …
  • #4 Composite Decking. …
  • #5 Hardwoods.
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Is softwood decking any good?

Softwood decking is an ideal budget-friendly option you can go for if you need a fast solution and it will look great right after installation. … In terms of longevity, pressure-treated softwood can last for a really long time as well. However, if not treated well, softwood decking’s lifespan can last for about 15 years.

Do I need pressure treated wood for deck?

It’s better to use treated lumber and know your deck will be secure in a few years than try to use untreated wood for the supports and watch them rot away rapidly. … Pressure treated wood doesn’t release any gases or particulates that could harm you and your family.

How long does timber decking last?

Hardwood decking has known to last over 40 years, although pressure treated softwood can last just as long if it’s treated well. Left untreated, softwood decking can last between 10 to 15 years, so over time hardwood can be a more economical material.

What size joists should you use for decking?

Commonly used joist sizes are 2-by-6, 2-by-8 and 2-by-10. For example, when you space joists 16″ apart — which is standard for residential decks — a deck spanning 9 1/2′ would require 2-by-6 joists, a 13′ deck would need 2-by-8 joists and a 16′ deck calls for 2-by-10 joists.

What spacing should decking joists be?

For residential decking, the joist space should not exceed 16 inches as measured on the centre. But if you want a more rigid feel for your decking, you can space the joist by 12 inches on the centre. Additionally, for commercial deckings, the standard joist spacing is 12 inches on the centre.

Can you use 3x2 for decking base?

3×2 can be used but you’ll have to support it more frequently throughout its length, say every five feet or so.

How much does it cost to build a 20x20 deck?

The average homeowner spends $2,200 to build a 10×10 foot deck, $6,160 to build a 14×20 deck, and $8,800 to build a 20×20 deck. The cost to build a deck with pressure-treated wood, hardwood, or composite is about $25 per square foot, for both materials and installation.

What wood is most weather resistant?

Cypress, one of the most durable weather resistant woods, is known as “the eternal wood”. It has a natural oil called cypress that repels insects and prevents rot.

What kind of wood lasts the longest outdoors?

So Which Wood Type Lasts the Longest Outdoors? The general consensus is for hardwoods, such as ipe and teak. Since these species are extremely rot-resistant and durable, they have the best chance at a long life outdoors.

What is the most rot-resistant wood?

  1. Cedar. Cedar is one of the best woods all-around. …
  2. Redwood. Redwood is one of the most popular rot-resistant woods for building houses. …
  3. Mesquite. …
  4. Mahogany. …
  5. Yew. …
  6. Bald Cypress. …
  7. Black Walnut. …
  8. White Oak.

Is Red Ironbark good for decking?

Timber decking is a great way to extend your living spaces and blur the lines between inside and out, with red ironbark decking a great choice for the tough Australian climate.

Is ironbark timber termite resistant?

Termite Resistant Timber types The narrow-leaved red ironbark tree, the broad-leaved red ironbark, the turpentine and the satinay are all also considered to be timbers that will all naturally resist termites.

Is ironbark a hardwood or softwood?

Breadcrumb. Grey ironbark is a premium native Australian hardwood with a wide range of applications from industrial construction to house framing, flooring and sporting goods. Grey ironbark is a premium native hardwood that has been well regarded as a high quality timber in Australia throughout human history.

Is composite decking worth the money?

There is no doubt that composite decking material is more expensive than wood. However, it is valued for its striking resemblance to natural wood and efficiency making it an excellent choice for decking. It is easier to clean and maintain which makes it last long enough to transfer the same value to the next homeowner.

What is the coolest decking material?

While Ipe is the coolest option, Cedar decking is a close second as it maintains a temperature that is a few degrees cooler than Redwood when exposed to the sun.

Is composite decking better than wood?

While they often cost more than wood, composite materials offer the promise of greater durability and less maintenance. Wood is still the most common choice for deck material,1 but it doesn’t last forever. Composites may be more durable, but they might lack the natural look and color you are looking for.

Is PVC decking good?

Durability: Both products score highest among decking products for durability. Mold and Mildew Resistance: Capped PVC decking has a slight edge over capped composite for its ability to resist mold and mildew. Stain Resistance: Both products rank highest among decking materials for stain resistance.

How thick should deck boards be?

NOTE: Standard boards are often called a 5/4 board when referring to traditional lumber, which means the actual thickness is typically somewhere between 1” and 1 ¼”. Thicker boards are often called a 2 x 6 when referring to traditional lumber, which means the actual thickness is somewhere between 1.2” and 1.5”.

What is the disadvantage of softwood?

Disadvantages of Softwood: The main reason for weaker and less durable wood is a low density of softwood. For heavy foot traffic areas, softwood is not suitable. Unless treated, softwoods tend to have poor fire resistance.

What wood is decking made from UK?

Completely natural and long lasting, it has the feel, look, and even sound that everyone hopes for when installing wooden decking. We typically use UK-grown oak and sweet chestnut which are both durable timbers, meaning they have an outdoor life expectancy of 15-25 years without treatment.

Can you use 1x6 for decking?

Never use 1×6 or 5/4×6 material in close to ground applications. Spacing between boards: You must allow space for your deck boards to expand when they take on moisture, as they will inevitably do when exposed to wet weather, rain or high humidity.