When considering decking options for your outdoor space, composite decking has emerged as a popular choice due to its durability, minimal maintenance requirements, and environmental benefits.
Composite decking combines wood fibers and plastic, offering the aesthetic appeal of wood with the advantages of plastic, such as resistance to moisture and pests. Whether you’re building a deck for your home or a commercial property, installing a composite deck is a manageable project for those with some basic DIY skills. This guide will walk you through the steps to install composite decking with ease.
Step 1: Plan & Design
The first phase of any deck installation involves careful planning. Start by determining the size and layout of your deck. Consider the placement of the deck—whether it’s attached to your home or free-standing—because this will influence the design and the foundation needed. Additionally, think about the color of the composite decking. Lighter tones are ideal for areas that receive a lot of sunlight since they won’t retain as much heat, making them more comfortable for barefoot use. On the other hand, darker shades can be a great choice for shaded areas, offering a rich aesthetic appeal.
Once you have a design in mind, calculate how much material you’ll need. Be sure to factor in the length of your deck boards and any additional features such as stairs or railing. Having a clear plan will make the installation process smoother and help you avoid unnecessary errors.
Step 2: Measure & Pour
With your design ready, it’s time to prepare the area where your deck will be. Measure the space carefully to ensure the deck fits as planned. The next step is setting the foundation. Start by digging holes for the deck footings using a post hole digger. These holes will need to be deep enough to support the deck structure, so ensure you’re meeting local building codes.
Once the holes are ready, pour concrete into each footing and allow it to cure for at least 24 hours. This solid foundation is essential for ensuring your deck remains sturdy and level over time.
Step 3: Frame the Deck
While the concrete is curing, you can begin framing the deck. Start by securing a ledger board to your home or the base of the deck. This will serve as the primary support for the structure. After that, install post anchors into the concrete footings or cast them directly into the wet concrete, depending on your design. The post anchors are critical for providing stability to the deck.
Next, you’ll need to set up the deck’s framing structure. Install joists across the deck, ensuring they are spaced evenly, usually around 16 inches apart. Attach the joists to the ledger board using joist hangers and secure them with nails. It’s important to check the level frequently during this stage to ensure the frame is completely even, which will prevent any structural issues when the deck boards are added later.
Step 4: Secure the Frame
With the framing in place, it’s time to double-check the structure’s stability. Use a chalk line to find any high spots in the framing, and use a grinder to smooth them out. This will help ensure the deck is perfectly level. Seal any joints that may be exposed to moisture, as water can cause long-term damage to the frame. Applying joist protection, such as GTape, over the top edge of the joists is a smart step in prolonging the lifespan of your deck. The tape helps prevent moisture from seeping into the wood, which could cause rot.
At this point, you can also add additional reinforcements, like extra posts or beams, if necessary, to support larger deck areas or any heavy features like a hot tub or heavy furniture.
Step 5: Lay the Deck Boards
Once the framing is complete, you can begin laying the composite deck boards. Start at one end of the deck and work your way across. Depending on the type of composite decking you have chosen, there may be different methods for securing the boards in place. Some boards require screws that are driven through the surface, while others use hidden fasteners or a click-in system that doesn’t require visible screws.
For a clean, finished look, avoid butt joints where two boards meet, as they can expand and contract with changes in temperature. It’s better to use full-length boards or feature boards to disguise expansion gaps. If your deck design allows, aligning the boards with the available length can save both time and materials.
Optional Additions: Balustrades and Stairs
The final step of your deck installation is adding any additional features. This might include railings, balustrades, or stairs. If your deck is elevated, adding stairs is essential for safety and accessibility. When installing balustrades, make sure to position the posts at least 6 centimeters away from the house. This will help prevent moisture buildup, which can lead to wood decay or other issues.
You can also add outdoor lighting to highlight your deck’s features and create a pleasant atmosphere for evening gatherings. Finally, don’t forget to consider the deck’s aesthetics by choosing decorative finishes or accessories that complement your home’s exterior.
Conclusion
Installing a composite deck is a straightforward project that can be completed in just a few days with the right tools and materials. By following these five simple steps—planning and designing, measuring and pouring, framing the deck, securing the structure, and laying the deck boards—you can create an attractive, functional outdoor space that will last for years. Whether you choose to install the deck yourself or hire a professional, composite decking offers a durable, low-maintenance solution that is sure to enhance your home’s outdoor living area.