How to Bend Composite Decking for Curves

Introduction

Composite decking has become increasingly popular due to its durability, low maintenance, and aesthetic appeal. However, one of the challenges with composite decking is its inability to bend easily like wood. This article will provide a comprehensive guide on how to bend composite decking boards for creating curved designs. By following these detailed instructions, you can achieve beautiful and functional curved composite decks.

Tools and Safety Measures

To bend composite decking boards effectively, you’ll need a few essential tools. These include a jigsaw, a heat gun, a utility knife, a straight edge, and a pair of safety goggles. Before starting, it’s crucial to take safety precautions. Always wear safety goggles when cutting composite materials to prevent debris from entering your eyes. Additionally, ensure the workspace is well-ventilated when using a heat gun to avoid inhaling fumes.

Kerf Cutting Technique

The kerf cutting technique involves making a series of parallel cuts on the underside of the composite board. This process allows the material to flex more easily without breaking. To perform this method:

1. Measure and mark the area where you want to create the curve.
2. Using a jigsaw, make shallow cuts along the marked line, spacing them about 1/8 inch apart. The depth of each cut should be approximately half the thickness of the board.
3. Once the cuts are made, gently bend the board along the cut lines. The kerfs allow the material to flex without snapping.

Note that while this method is effective, it does weaken the board slightly. Therefore, it’s important to reinforce the bent sections with additional fasteners.

Heat Gun Method

The heat gun method involves heating the composite board to make it more pliable before bending. Here’s how to do it:

1. Preheat your heat gun to a moderate temperature (around 200°F).
2. Hold the heat gun about 6 inches away from the surface of the composite board and move it slowly back and forth over the area you want to bend.
3. Once the material starts to soften, carefully bend it into the desired shape.
4. Allow the heated section to cool gradually to set the new shape.

Remember to monitor the temperature closely to avoid overheating, which can cause the composite material to burn or warp.

Conclusion

Bending composite decking boards for curved designs requires careful planning and execution. Whether you choose the kerf cutting technique or the heat gun method, both require patience and attention to detail. With the right tools and techniques, you can successfully create stunning curved composite decks that add beauty and functionality to your outdoor space.

Reference

How to Bend Composite Decking for Curves – Family Handyman