Floating decks, also known as grade-level or freestanding decks, have gained popularity among Auckland homeowners for their ease of installation and flexibility. However, like any construction option, they come with their own set of challenges.
Limitations in Height and Size
Floating decks are typically low to the ground, which can limit their height. This can be problematic for homeowners who desire a raised viewing platform or a multi-tiered structure.
- Height Restrictions: Often, these decks cannot exceed a particular height due to stability concerns.
- Space Limitations: Depending on soil quality and the underlying foundation, there might be restrictions on the deck’s spread.
Lack of Support
Unlike traditional decks, which are anchored to the house, floating decks rely solely on the ground and their frame for support.
- Less Stability: They may shift over time, especially if they’re installed over soil that expands and contracts with the seasons.
- Weight Limitations: With no solid anchoring, they might not support excessive weight, such as hot tubs or large gatherings.
Maintenance and Upkeep
The close proximity to the ground can lead to some maintenance challenges.
- Mould and Mildew Growth: With limited airflow underneath, there’s a heightened risk of mould, mildew, and rot.
- Pest Infestations: Being closer to the ground can make these decks more accessible to pests like termites.
NZ Worksafe Considerations
For deck installations, Worksafe NZ guidelines insist on safety measures during construction, especially if the work involves heights or heavy materials. While floating decks are generally safer due to their proximity to the ground, there may still be health and safety considerations to bear in mind.
Auckland Bylaw Implications
Auckland Council’s Unitary Plan sets out specific rules for structures like decks. Depending on the suburb – whether it’s North Shore, Waitākere, or Manukau – there may be unique zoning rules affecting deck installations.
- Permit Requirements: Even though floating decks are not typically attached to the main house, some regions may still require building consents, especially for larger structures.
- Setback Restrictions: There might be guidelines on how close the deck can be to property boundaries.
Alternatives to Timber Decks in Auckland
Given the disadvantages of floating timber decks, Aucklanders might consider several alternatives:
Composite Decking:
Made from a blend of wood fibres and plastic, this option is durable, resistant to rot, and requires less maintenance.
Aluminium Decking:
Lightweight, strong, and resistant to rust, it’s an excellent choice for those who prefer minimal upkeep.
Concrete Pavers:
Offering a solid foundation, pavers can be an aesthetic choice for ground-level patios.
Comparison Table: Decking Alternatives
| Decking Material | Average Cost (per square metre) | Lifespan | Maintenance Requirements | Pros | Cons |
| Timber (Pine) | $250 | 15 years | Regular sealing and cleaning | Natural appearance; Easily customizable | Might require more maintenance; Susceptible to pests |
| Composite | $380 | 25+ years | Occasional cleaning | Durable; Low maintenance; Variety of finishes | Higher initial cost |
| Aluminium | $450 | 30+ years | Minimal cleaning | Lightweight; Highly durable; Resistant to rust and rot | Less natural appearance; Can become hot in direct sunlight |
| Concrete Pavers | $200 | 20+ years | Occasional cleaning; Re-sanding | Strong foundation; Aesthetic options | Can be hard on feet; Weeds might grow between pavers |
A floating deck, while an enticing option for its simplicity, does come with challenges. By understanding these, Auckland homeowners can make an informed decision on the best deck for their property. Remember to consult with a local builder or deck builder to ensure compliance with all local guidelines and to get the most out of your decking choice.
Common Mistakes with Floating Decks
Building a floating deck may seem straightforward, but like all construction projects, it comes with potential pitfalls. Whether you’re a seasoned DIY enthusiast or hiring deck building professionals, being aware of these common mistakes can save time, money, and ensure your deck lasts for years.
Inadequate Site Preparation
- What Happens: Many homeowners make the mistake of placing deck blocks directly on the grass or soil without proper site levelling or weed barrier installation.
- Consequence: This can result in an uneven deck and weed growth between the deck boards.
Ignoring Water Drainage
- What Happens: If the deck is too flat or lacks adequate spacing between boards, water may not drain off efficiently.
- Consequence: This can lead to pooling water, increasing the risk of rot, mould, and reducing the deck’s lifespan.
Skimping on Materials
- What Happens: Opting for cheaper materials or not using weather-resistant screws and fasteners may seem cost-effective in the short term.
- Consequence: Over time, the materials can deteriorate quickly, leading to more frequent repairs or even a complete deck replacement.
Overlooking Local Building Codes
- What Happens: Assuming that because a floating deck isn’t attached to the home, it doesn’t need to adhere to Auckland’s building codes or require a permit.
- Consequence: This could lead to fines, being asked to remove or modify the deck, or potential issues when selling the property.
Inaccurate Measurements
- What Happens: Not measuring the site accurately or failing to square the deck during installation.
- Consequence: This can lead to issues like an uneven deck, gaps at the edges, or even structural instability.
Being aware of these common pitfalls and planning accordingly can ensure that your floating deck not only looks great but remains safe and durable for years to come.
Frequently Asked Questions on Floating Decks
What is a floating deck?
A floating deck, also known as a free-standing or island deck, is a deck that stands independently from a house or structure, not being attached to any building. It’s supported by deck blocks and doesn’t require deep footings or digging.
How long does a floating deck last?
With proper care and maintenance, a floating deck can last anywhere from 10 to 20 years, depending on the materials used and the conditions it’s exposed to.
Is a permit required for a floating deck in Auckland?
In many cases, Auckland’s building codes require a permit for deck construction, floating or not. Always consult with your local council or a building expert before starting your project.
Can I build a floating deck on uneven ground?
While it’s possible to build on uneven ground, the site needs to be properly levelled and prepared. Failing to do so can result in an unstable or unsafe deck.
Are floating decks safe?
Yes, when built correctly and maintained properly, floating decks are safe. It’s crucial to adhere to building standards, use quality materials, and periodically inspect the deck for any issues.
Can a floating deck support a hot tub or a gazebo?
While floating decks can be sturdy, supporting heavy structures like hot tubs or gazebos might require additional support and reinforcement. It’s advisable to consult with a deck construction expert before adding significant weight.
How do I maintain my floating deck?
Routine maintenance includes checking for loose boards or nails, cleaning to remove dirt and debris, and treating the wood to protect against moisture and UV rays. Depending on the material and Auckland’s climate, resealing or staining might be necessary every couple of years.
Staying informed and addressing these common questions ensures a smooth journey in your floating deck project, from inception to completion.