The Best Timber You Should Use for Making Gates and Fences
April 20, 2025
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When considering adding a deck to your home, one of the first questions that comes to mind is the cost involved. The cost to build a timber deck can vary significantly depending on various factors such as the size of the deck, the type of timber used, labour costs, and additional materials. In this article, we will explore the factors affecting the cost of timber deck installation, how to calculate the cost of building a timber deck, additional costs to consider, comparing timber deck costs to other options, and the importance of hiring a professional for deck installation.
What is the Cost of Timber Deck Installation?
The cost of timber deck installation in Australia can vary quite a bit depending on the size of the deck and the type of timber used. On average, you can expect to pay between $300 – $400 per square metre to build a timber deck. However, the total cost can range from as low as $200 per square metre for a basic treated pine deck up to $1,000 per square metre for a large, elevated deck made from premium hardwood timber.
For a small 20 square metre deck, the total cost of timber deck installation will typically be in the range of $6,400 – $10,000. For a medium sized 30 square metre deck, expect to pay $9,600 – $15,000. And for a larger 40 square metre deck, the total cost will likely fall between $12,800 – $20,000. These estimates include all materials like the timber, fasteners, and substructure, as well as the labour cost for installation.
The type of timber you choose makes a big difference in the overall cost of timber deck installation. Treated pine is the most affordable option at around $200 per square metre. Hardwood timbers like Merbau, Blackbutt and Ironbark are more expensive, costing $320 per square metre and up. Composite decking made from a mix of recycled plastic and wood fibres is another option, but it’s pricier at $350 per square metre and up.
When budgeting for your timber deck, keep in mind that the cost of timber deck installation is just one part of the total expense. You’ll also need to factor in ongoing maintenance like regular cleaning, oiling and staining to keep your deck looking its best for years to come. With proper care, a quality timber deck can last for decades and add significant value to your home.
Factors Affecting Cost of Timber Deck Installation
Several factors come into play when determining the cost of timber deck installation. The size of the deck is a significant factor as larger decks will naturally cost more than smaller ones. The decking material used also impacts the cost of timber deck installation, with hardwood timber such as merbau typically being more expensive than treated pine. Labour costs for deck installation are another crucial element that contributes to the overall cost.
Impact of Deck Size on Cost of Timber Deck Installation
The size of your deck has a direct impact on the total cost of the project. Larger decks require more materials and labour to construct, which translates to a higher cost. Deck size is usually measured in square metres, with the cost per square metre for timber decking playing a crucial role in calculating the overall expense.
Decking Material and Cost
The type of timber you choose for your deck significantly influences the cost of timber deck installation. Hardwood timber decking options tend to be more expensive than treated pine decking. The price of timber can also vary based on the species and quality of the wood used. It’s important to consider the longevity and maintenance requirements of the timber when evaluating the overall cost.
How Cost of Labour Affects Cost Of Timber Deck Installation
Labour costs for deck installation can vary depending on the complexity of the project and the experience of the professionals you hire. Skilled labour is essential for ensuring a high-quality deck installation. The installation costs should be factored into your overall budget when planning for a new deck.
Additional Costs in Timber Deck Construction
Aside from the basic costs of timber decking, there are additional expenses to consider when planning your deck construction. Understanding the cost per square metre for timber decking is crucial in estimating the total expenditure. Factors like using composite decking, the cost of decking boards and materials, and the application of deck oil all influence the overall cost of timber deck installation.
Cost per Square Metre for Timber Decking
The cost per square metre for timber decking can vary based on the type of timber selected and the complexity of the deck design. Higher-quality timber species may have a higher cost per square metre compared to more common varieties. It’s important to factor in this cost when budgeting for your deck project.
Impact of Composite Decking on Overall Cost of Timber Deck Installation
Composite decking, which combines timber fibre and plastic, can impact the overall cost of your deck construction. While initial costs may be higher for composite materials, they often require less maintenance over time, potentially reducing long-term expenses. Understanding the pros and cons of composite decking is essential in determining whether it fits your budget and preferences.
Cost of Decking Boards and Materials
When planning your timber deck, don’t forget to account for the cost of decking boards and additional materials such as screws, nails, and joists. These expenses can add up, especially for larger decks or projects that require specialised materials. It’s advisable to obtain quotes for decking boards and materials from multiple suppliers to ensure you’re getting the best value.
Cost of Timber Deck Installation: Comparing Timber Deck Costs to Other Decking Options
Comparing timber deck costs to other decking options such as treated pine or composite materials can help you make an informed decision that aligns with your budget and preferences. Factors like the longevity, maintenance requirements, and initial cost differences between hardwood timber decking and treated pine decks should be considered.
Hardwood Timber Decking vs. Treated Pine Deck Cost
When comparing hardwood timber decking to treated pine deck costs, it’s essential to weigh the benefits and drawbacks of each option. While hardwood decking may have a higher upfront cost, it can offer greater durability and aesthetics. Treated pine decks, on the other hand, are more budget-friendly but may require additional maintenance and refinishing over time.
Cost Differences Based on Deck Size and Shape
The size and shape of your deck can also influence the overall cost of timber deck installation. Complex deck designs, elevated decks, or decks with special features may require more labour and materials, increasing the total cost. Understanding how the size and shape of your deck impact the cost will help you plan your project budget effectively.
Factors Influencing Cost of Composite Decking
For those considering composite decking, understanding the factors that influence the cost is crucial. Composite materials typically come at a higher price point than traditional timber decking, but they offer benefits such as low maintenance and longevity. Factors like brand, quality, and colour options can affect the overall cost of composite decking.
Hiring a Professional for Deck Installation
FAQS
Q: How much does it cost to build a timber deck?
A: The cost to build a timber deck can vary depending on factors such as size, materials used, complexity of the design, and location. On average, the cost can range from $200 per square metre upwards.
Q: What factors impact the cost of timber deck installation?
A: The cost of building a deck can be influenced by the size, shape, and material chosen for the deck. Other factors such as labour costs, permits, and additional features like railing or stairs can also affect the overall cost.
Q: How does the type of decking material affect the cost of timber deck installation?
A: The type of decking material chosen can have a significant impact on the cost of the project. For example, natural timber decking might cost more upfront but require less maintenance over time compared to composite decking.
Q: Is there an average cost guide for building a deck in Australia?
A: While costs can vary based on individual projects, a rough estimate is around $200-$1000 per square metre for timber decking in Australia, depending on the materials and design choices. The deck price can differ based on several factors.
Q: What are some common types of deck materials used?
A: Common types of deck materials include natural timber, composite decking (such as basic composite deck), merbau decking, and a combination of recycled timber fibres. Each material comes with its own cost and maintenance considerations.
Q: Do raised decks have different cost considerations?
A: Raised decks, which require support structures, can incur additional costs compared to ground-level decks. Factors like size, materials, and complexity of the design will also impact the overall cost of a raised deck.
Q: How much does maintenance add to the overall cost of timber deck installation?
A: Maintenance costs can vary depending on the type of decking material used. Natural timber decks may require more upkeep, such as staining or sealing, compared to composite decking, which can impact the overall cost of owning a deck.
Q: What factors affect deck price?
A: Factors affecting deck price include the type of timber for decking used, whether it’s merbau timber, recycled timber fibres and plastic composite, or dense timber. The overall decking cost also depends on the size of the outdoor deck, with a pool deck typically costing more than a regular wooden deck.
Q: What's the average cost of timber deck installation?
A: Installing a deck can cost around $200 per square metre, with additional costs for features like raised decks or composite decking. The cost of maintaining your deck will also add considerable costs to your budget. Hiring a deck builder can also increase the overall cost.
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