Timber Pedestal Decks: A Practical Approach

Timber floating decks are a popular choice for homeowners looking to enhance their outdoor spaces with a durable, stylish, and cost-effective solution. Using a pedestal system like Anchorjak, you can create a stable, level deck without the need for extensive excavation or substructure work. This guide walks you through the step-by-step process of building a timber pedestal deck.

Why Choose a Timber Pedestal Deck?

✔ No Need for Traditional Foundations – Pedestals eliminate the need for concrete footings, reducing site preparation.
✔ Protects Waterproofing Membranes – Ideal for decks over membranes as it prevents penetration and potential leaks.
✔ Adjustable & Level Surface – Anchorjaks allow for precise height adjustments, making it easy to achieve a perfectly level deck.
✔ Suits Any Surface – Works over concrete patios, waterproof membranes, soil, or compacted metal.
✔ Long-Lasting & Sustainable – Timber provides a natural aesthetic and, when properly maintained, can last for decades.

Essential Materials

🔹 Timber boards – Choose durable hardwood or composite timber for longevity.
🔹 Anchorjak pedestals – Adjustable height supports for a stable deck.
🔹 Timber or aluminium joists – Forms the structural subframe.
🔹 Wood screws or composite board clips – Secures the decking boards.
🔹 Leveling tools – Ensures a flat, stable surface.

Step-by-Step Guide to Installing a Timber Pedestal Deck

1. Clear the Area

• Remove debris from the installation site.
• Ensure the ground is level, whether you're building over a concrete patio, waterproof membrane, soil, or compacted metal base.

2. Set Up Anchorjak Pedestals

• Position the Anchorjaks according to specification requirements.
• Adjust their height to create a perfectly level substructure.
• Ensure correct spacing for even weight distribution.

3. Lay the Subframe

• Install either aluminium joists or timber joists onto the pedestals.
• Secure the joists to the Anchorjaks for a sturdy framework.
• Double-check for leveling and alignment before proceeding.

4. Install the Timber or Composite Decking Boards

• Lay the decking boards onto the subframe, ensuring even spacing.
• Use wood screws for timber boards or hidden clips for composite decking to fasten them securely.
• If using composite timber, follow manufacturer guidelines to prevent expansion or warping.

5. Final Checks & Finishing Touches

• Inspect for any uneven boards or gaps.
• Make final height adjustments if necessary.
• Apply a protective sealant (if using natural timber) to enhance durability.

The Best Timber Pedestal Deck for Your Space

For cost-effective and low-profile decking, the Aluminium Joist system with timber overlay is a great choice, reaching a total height as low as 70mm (including the Anchorjak pedestal (30mm), Aluminium Joist (30mm), and timber board thickness).

If opting for composite timber, choose a high-quality brand to avoid issues like scratching and warping under New Zealand’s harsh sun.

Build Smarter with Anchorjak

Anchorjak pedestal systems provide a strong, adjustable, and waterproof-friendly solution for any timber deck project. Whether you’re a homeowner or a builder, this system makes it easier than ever to achieve a professional, durable deck without the complexities of traditional decking methods.

💡 Ready to build? Order your Anchorjak pedestals and accessories online at www.j-vice.co.nz today! or contact your local timber merchant for a special order.

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Installation videos also available.

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