Building a floating deck with hollow composite decking is an exciting project that combines durability, aesthetics, and ease of installation. As a supplier of high – quality hollow composite decking, I’ve witnessed firsthand the transformation these decks can bring to outdoor spaces. In this blog, I’ll guide you through the process of building a floating deck with hollow composite decking, from planning to the final touches. Hollow Composite Decking

Step 1: Planning Your Floating Deck
Before you start any construction, thorough planning is crucial. First, determine the purpose of your deck. Is it going to be a relaxing space for a small gathering, a play area for kids, or a place to host large parties? This will help you decide on the size of the deck.
Measure the area where you plan to build the deck. Consider the slope of the ground; a floating deck typically works best on relatively flat surfaces, but with the right techniques, you can also build it on a mild slope. Check local building codes and regulations. Some areas might have restrictions on the size, height, or location of decks. You may need to obtain a permit, so it’s important to do your research early on.
Sketch out your deck design on paper. Decide on the shape, such as rectangular, square, or L – shaped. You can also add features like built – in benches or planters if you want. As a hollow composite decking supplier, I recommend choosing a design that maximizes the use of the available space and complements the style of your home.
Step 2: Gathering Materials and Tools
Once you have a clear plan, it’s time to gather the necessary materials and tools. The most important material, of course, is the hollow composite decking. Our hollow composite decking offers several advantages. It is lightweight due to its hollow design, which makes it easier to handle during installation. It is also resistant to rot, decay, and insect damage, ensuring a long – lasting deck.
In addition to the decking, you’ll need joists, which provide support for the decking boards. You can choose from treated lumber or composite joists, depending on your budget and preferences. For fasteners, use corrosion – resistant screws or hidden decking fasteners. Hidden fasteners give your deck a cleaner, more professional look.
Other materials include post bases, which are used to support the joists, and gravel or crushed stone for the base of the deck. You’ll also need a landscape fabric to prevent weeds from growing through the deck.
As for tools, you’ll need a circular saw, a drill, a level, a tape measure, a hammer, and a chalk line. Safety gear such as gloves, safety glasses, and a hard hat are also essential to protect yourself during the construction process.
Step 3: Preparing the Site
Start by clearing the area where you plan to build the deck. Remove any grass, rocks, or debris. If the ground has a slope, you may need to level it. You can do this by adding or removing soil as needed. Use a level and a long board to check the flatness of the area.
Next, lay down the landscape fabric over the cleared area. This will prevent weeds from growing up through the gravel base. Spread a layer of gravel or crushed stone over the landscape fabric. The gravel should be about 2 – 3 inches thick and evenly spread across the area. Use a rake to smooth the surface and ensure it is level.
Step 4: Installing the Joists
Mark the layout of the joists on the gravel base using a chalk line. The joist spacing will depend on the type of decking you are using, but typically, joists are spaced 16 inches on center. Place the post bases on the marked locations on the gravel. Make sure they are level and firmly in place.
Attach the joists to the post bases using screws or bolts. Use a level to ensure that the joists are straight and level. If necessary, shim the joists to achieve the proper level. Joists should be installed parallel to each other, and the ends should be flush.
Step 5: Installing the Hollow Composite Decking
Begin installing the decking boards at one end of the deck. Start with a full board and align it with the edge of the joists. Use a drill and corrosion – resistant screws to attach the decking to the joists. If you are using hidden decking fasteners, follow the manufacturer’s instructions for installation.
Make sure to leave a small gap between the decking boards to allow for expansion and contraction. The gap should be about 1/8 to 1/4 inch wide. As you install the next board, use a spacer to maintain the consistent gap.
Cut the decking boards to the appropriate length using a circular saw. Wear safety goggles and follow safety procedures when using power tools. When you reach the end of a row, you may need to cut a partial board to fit. Use a miter saw or a jigsaw for more precise cuts, especially if you need to create angles or curves.
Step 6: Adding Finishing Touches
Once all the decking boards are installed, it’s time to add the finishing touches. You can install a railing around the deck for safety and aesthetics. Choose a railing style that complements the overall look of your deck and your home. There are many options available, including composite railings, which are easy to maintain and durable.
You can also add lighting to your deck. Solar – powered lights are a great option as they are energy – efficient and easy to install. Place them along the edges of the deck or under the railing to create a warm and inviting atmosphere.
Another finishing touch is to add furniture and accessories to your deck. Choose furniture that is suitable for outdoor use, such as weather – resistant wicker or plastic furniture. Add some potted plants to bring a touch of nature to your deck.
Benefits of Using Hollow Composite Decking
As a hollow composite decking supplier, I can’t stress enough the advantages of using our product. Firstly, the hollow design makes the decking lightweight, which not only reduces the overall weight of the deck but also makes it easier to transport and install. This can save you time and labor costs during the construction process.
Secondly, hollow composite decking is highly durable. It is resistant to rot, decay, and insect damage, which means you won’t have to worry about replacing the boards due to these issues. It also has a long lifespan, providing you with a beautiful deck for many years to come.
In addition, hollow composite decking requires minimal maintenance. Unlike traditional wood decks, which need to be stained, painted, or sealed regularly, composite decking only needs to be cleaned occasionally with soap and water. This makes it a convenient option for homeowners who don’t have a lot of time to spend on deck maintenance.
Conclusion

Building a floating deck with hollow composite decking is a rewarding project that can enhance the beauty and functionality of your outdoor space. By following these steps, you can create a deck that is not only durable and long – lasting but also aesthetically pleasing.
Composite Fence Panels If you’re interested in starting your own deck project, I encourage you to reach out to discuss your specific needs. Our team of experts can provide you with detailed information about our hollow composite decking products, including different colors, styles, and sizes. We are committed to helping you create the perfect deck for your home. Contact us today to start the conversation about your next outdoor decking project.
References
- "Composite Decking Installation Guide," published by a leading decking industry magazine
- "Outdoor Living Spaces: Design and Construction," a well – known book on outdoor construction projects
- Technical specifications provided by the manufacturers of hollow composite decking and related building materials.
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