Composite decking has become an increasingly popular choice for homeowners looking to enhance their outdoor living spaces. Known for its durability, low maintenance, and aesthetic appeal, composite decking offers an excellent alternative to traditional wood decking. However, if you're considering making the switch, it's essential to understand this material's ins and outs before investing. This blog will walk you through everything you need to know about composite decking, from its composition to installation, maintenance, and more.
What is the Life Expectancy of Composite Decking?
One of the key benefits of composite decking is its long lifespan. On average, composite decking can last between 25 and 30 years or longer with proper care and maintenance. Unlike traditional wood decking, composite materials are resistant to rot, splintering, and insect damage, which significantly contributes to their longevity. Furthermore, composite decking doesn't warp, crack, or fade as quickly as natural wood, making it an ideal choice for regions that experience extreme weather conditions.
What is Composite Decking Made From?
Composite decking is made from a mixture of wood fibres and recycled plastic. Typically, the wood component consists of sawdust or wood chips, while the plastic portion is usually polyethylene or polyvinyl chloride (PVC). This blend creates a highly durable material that mimics the look and feel of wood but with the added benefits of strength and weather resistance.
What are the Basics of Installation?
Installing composite decking is relatively straightforward but requires careful planning and attention to detail. Here's a quick overview of the basics:
- Foundation Prep: Ensure that the area where you install the deck is level and debris-free. If installing over an existing surface, ensure it's structurally sound.
- Joist Spacing: Composite decking typically requires joists to be spaced 12 to 16 inches apart to ensure stability. Refer to the manufacturer's instructions for specific spacing recommendations.
- Board Installation: Composite decking boards are installed using either hidden fasteners or screws. Hidden fasteners give the deck a seamless, polished look, while screws may be quicker and more secure.
- Allow for Expansion and Contraction: Composite decking expands and contracts with temperature changes like all materials. To accommodate this natural movement, leave a small gap between the boards.
- Finishing Touches: Add trim and fascia boards to give the deck a clean, finished look.
How Do You Cut the Boards?
Cutting composite decking boards is similar to cutting wood. You can use standard woodworking tools such as circular, mitre, or table saws with carbide-tipped blades. Use a sharp blade to secure the board properly before cutting, measure twice, and cut once for best results to avoid errors. If you need curved cuts, a jigsaw with a fine-tooth blade can work effectively.
How Big Are Composite Decking Boards?
Composite decking boards typically come in standard dimensions, similar to traditional wood decking. The most common sizes are:
- Width: 5.5 to 6 inches
- Thickness: 0.9 to 1 inch
- Length: 12, 16, or 20 feet
These dimensions may vary slightly depending on the manufacturer, so it's essential to check the specifications of the brand you're considering.
How Do You Calculate How Much You Need?
- Measure the Area: Determine the square footage of your deck area by multiplying the length by the width.
- Board Coverage: Most composite decking boards cover about 5 square feet per linear foot. Divide the total square footage of your deck by the square footage covered by each board.
- Gapping: Remember to account for the spacing between boards, which is typically 1/8 to 1/4 inch.
- Waste Factor: Add an extra 5-10% to your material estimate to account for waste, cuts, and mistakes.
An online decking calculator, often available on manufacturers' websites, can help simplify this process.
What Maintenance is Required?
One of the greatest advantages of composite decking is its low-maintenance nature. Unlike wood, which requires regular sanding, staining, and sealing, composite decking only needs occasional cleaning to keep it looking its best.
Is It Environmentally Friendly?
Composite decking is generally considered more environmentally friendly than traditional wood decking. Here's why:
- Recycled Content: Many composite decking boards are made from a blend of recycled plastic and reclaimed wood, reducing the demand for virgin materials.
- Longevity: Because composite decking lasts much longer than wood, fewer resources are needed for replacement or maintenance.
- No Harmful Chemicals: Unlike treated wood, composite decking doesn't require harmful chemicals like pesticides, stains, or sealants to protect it.
That said, choosing a manufacturer prioritising sustainability in its production processes is essential. Look for brands with high percentages of recycled content and certifications, such as FSC (Forest Stewardship Council) or LEED (Leadership in Energy and Environmental Design).
What Colours Does Composite Decking Come In?
Composite decking comes in various colours, allowing you to find the perfect match for your outdoor space.
Can Composite Decking Be Painted?
While composite decking can technically be painted, it's generally not recommended. Composite boards are designed with a protective outer layer or "cap" that resists fading, staining, and weathering. Painting can compromise this layer and void the manufacturer's warranty.
Composite decking offers a long-lasting, low-maintenance solution for anyone looking to upgrade their outdoor space. Made from a durable blend of recycled materials, it provides the look of natural wood without the associated upkeep. With various colours and finishes available, composite decking can be tailored to fit your aesthetic preferences while offering eco-friendly benefits.
Whether installing a new deck or replacing an old one, composite decking is a solid investment that will serve you well for decades. Now that you're armed with all the key information, you can make an informed decision and enjoy the benefits of composite decking for years to come.