How to Build a Floating Deck the Right Way

Building a floating deck is a fantastic way to create an inviting outdoor space without the hassle of digging deep footings or permanently attaching a deck to your home. Floating decks are versatile, cost-effective, and straightforward to build, making them a great choice for DIY enthusiasts. Whether you want a spot to entertain friends or a quiet place to relax, a floating deck can easily transform your backyard. In this guide, we’ll take you through a simple, step-by-step process to help you construct your own floating deck. With our help, you'll have a sturdy, beautiful deck to enjoy in no time.

The Short Answer: Building a Floating Deck with Deck Blocks

Step-by-Step Instructions

• Site Preparation: Start by clearing the area of any grass, roots, or debris. Level the ground as much as you can—this will make placing your deck blocks easier and help keep everything stable.
• Placing Deck Blocks: Arrange the deck blocks in a grid pattern, roughly four to six feet apart, depending on your deck size. Make sure they’re level to prevent any shifting over time.
• Constructing the Frame: Using pressure-treated lumber, assemble the outer frame of your deck. Secure the frame to the deck blocks, ensuring everything is even and solid.
• Installing Joists: Insert joists across the frame at regular intervals (usually 16 inches apart). These will provide structural support and stability.
• Laying Decking Boards: Once the frame is complete, lay the decking boards perpendicular to the joists. Use screws or fasteners to secure them in place, maintaining consistent spacing between boards for proper drainage.

Understanding Floating Decks

What is a Floating Deck?

A floating deck is a freestanding, ground-level platform that isn’t attached to any structure. It “floats” above the ground, usually supported by deck blocks, which makes it a flexible and relatively simple DIY project. This type of deck is perfect for creating outdoor areas without permanent alterations.

Limitations of Floating Decks

Floating decks do come with a few limitations. They typically can’t be built very high off the ground without additional support, and you need to make sure there’s proper drainage underneath to prevent moisture buildup, which could cause rot over time. With the right planning, though, floating decks are an excellent choice for enhancing your outdoor space.

Planning Your Floating Deck

Choosing the Location

Before starting, you’ll need to pick the right location for your floating deck. Think about the sun—will you want shade or direct sunlight? Consider the deck's proximity to your house for easy access, as well as how you plan to use it. Once you've chosen your location, be sure to check local building codes. Even for a simple floating deck, you might need a permit or have to follow certain regulations. A quick call to your local building authority will clarify what's required.

Creating a Plan

Next, draw out a basic plan of your deck, including the size and materials you’ll need. This will help you get organized and keep costs in check. Take into account any special features, like stairs or seating. Good planning will make the building process go much smoother and ensure you’re happy with the end result.

Materials and Tools Required

Materials and Tools List

For this project, you’ll need pressure-treated lumber, decking boards (either wood or composite), concrete deck blocks, screws, and fasteners. You’ll also need a circular saw, drill, tape measure, level, shovel, and safety equipment like gloves and safety glasses. Quality materials are key—using pressure-treated wood will help keep your deck strong and resistant to weather, rot, and insects. Make sure to source your materials from a reputable supplier to ensure everything lasts as long as possible. Having the right tools on hand will save you time and effort throughout the project.

Finishing Touches and Maintenance

Adding Features

Once your deck is assembled, consider adding some finishing touches to make it even more enjoyable. Built-in seating or railing can add functionality and style.

Protecting Your Deck

To protect your deck, apply a weather-resistant sealant or stain—this will help shield it from rain, sun, and wear. Regular maintenance is key to longevity: clean the deck periodically, check for any loose screws, and reapply sealant every couple of years. By keeping up with these small tasks, your floating deck will stay in great shape for many years.

Safety Considerations

Staying Safe During Construction

Safety should be your number one priority when building your floating deck. Always use personal protective equipment (PPE) like gloves, safety glasses, and sturdy footwear. Make sure all your fasteners are tightened securely, and the deck is stable before use.

Regular Inspections

After severe weather, inspect your deck for any damage, such as loosened boards or compromised structural elements. Keeping safety in mind during construction and regular use will ensure that your deck is both enjoyable and secure for your family and guests.

Final Thoughts on Floating Deck Construction

Building a floating deck is an excellent way to add value to your outdoor living space. It’s a satisfying DIY project that results in a comfortable, functional space to enjoy for years to come. By following these detailed steps, you can confidently construct a sturdy deck tailored to your needs. Remember to check local regulations to ensure compliance, and don’t be afraid to ask for help if needed. We’d love to see what you build—feel free to share photos or reach out with any questions along the way!