Buy Premium Deck Jacks: Durable, Adjustable Supports for a Stable & Lasting Deck

What Are Deck Jacks and Why You Need Them

Deck Jacks are innovative support components designed to create a stable, level subfloor for decking installations. They serve as the critical foundation, supporting joists and evenly distributing weight across the surface. One of the key advantages of adjustable deck jacks is their ability to accommodate a variety of deck heights and uneven surfaces. By simply rotating the jack, you can precisely raise or lower the support height—making them perfect for sloped areas, rooftops, balconies, and patios. Whether you’re building with composite decking or solid timber, deck jacks offer unmatched versatility and stability for any outdoor project.

Features and Benefits of Auswide Frameless Deck Jacks

At Auswide Frameless, our deck jacks are built from high-strength, weather-resistant materials designed to withstand the elements and provide long-term durability. Engineered for Australian conditions, these supports are compliant with AS/NZS building standards, giving you peace of mind with every installation.

Key benefits include:

• Tool-free height adjustment for quick, precise leveling

• Fast, grid-based installation for timber or aluminium joists

• Non-penetrating design—ideal for waterproof membranes on balconies and rooftops

• Complete system compatibility for timber, composite decking, or structural tiles

• Easy removal for future access to subfloor services

These adjustable deck jacks help extend your deck’s lifespan, reduce maintenance, and improve overall structural integrity.

How to Choose the Right Deck Jack for Your Project

Selecting the right deck jack starts with assessing your project’s specific requirements:

1. Measure your finished floor height – Determine the vertical distance between the substrate and the top of your decking. Our adjustable deck jacks accommodate finished heights from 20mm to 100mm, with extenders available for greater elevations.

2. Consider load capacity – Ensure your chosen jack can support the expected weight, including decking materials and foot traffic.

3. Material compatibility – Decide whether you’ll use aluminium joists or solid timber. Auswide Frameless deck jacks support both.

4. Fixed vs. adjustable – For most projects, adjustable deck jacks provide the best flexibility and future-proofing, especially for sloped or uneven surfaces.

Not sure what’s best? Contact us for expert guidance tailored to your deck design.

Deck Jacks vs Other Deck Support Options

Traditional deck supports like concrete piers, timber posts, or blocks can be bulky, expensive, and time-consuming to install. In contrast, deck jacks offer a modern solution with significant advantages:

• Faster installation – No digging, curing, or extensive groundwork required

• Height adjustability – Easy leveling on uneven ground without custom cutting

• Non-invasive – Ideal for waterproof membranes and sensitive substrates

• Cost-effective – Reduces labour and material costs over time

• Reusable – Can be repositioned or removed as needed

For builders and homeowners seeking a streamlined, durable decking solution, adjustable deck jacks clearly outshine traditional support methods in efficiency, adaptability, and long-term value.