The instruction to clean-cut the Trex decking board a minimum of 3/16" on both ends serves an important purpose in the installation process. If you don't follow this guideline, it can lead to various issues that may compromise the overall performance and aesthetics of your Trex decking system. Here's why it's necessary:
Expansion and Contraction: Trex composite decking, like many other composite materials, can expand and contract with changes in temperature. By leaving a small gap (3/16") on both ends of each board, you allow room for the boards to expand and contract without buckling or warping. If you were to install the boards without any gaps, the expansion could lead to boards pushing against one another, causing warping, bowing, or even structural damage over time.
Proper Fit: The 3/16" clean-cut requirement ensures that each board fits tightly against adjacent boards and any framing members. This helps create a uniform and smooth surface for your deck, reducing the risk of tripping hazards and enhancing the overall appearance.
Preventing Rot and Mold: Cutting the ends cleanly helps to avoid any frayed or exposed composite material, which could potentially absorb moisture and lead to rot or mold issues over time.
Manufacturer's Recommendation: Following the manufacturer's installation guidelines is essential to maintain the warranty and ensure the decking performs as intended. Deviating from the instructions may void the warranty and leave you responsible for any potential problems that arise.
To summarize, clean-cutting the Trex decking boards with a 3/16" gap on both ends allows for proper expansion and contraction, ensures a snug fit between the boards, and helps maintain the structural integrity and appearance of your deck over the long term. Always read and follow the manufacturer's instructions to ensure a successful and long-lasting decking installation.