• Toronto, ON (905) 856-1177

  • TREX Enhance Clam Shell


    TREX Enhance Clam Shell is a top-quality composite decking board. These boards are made from 95 percent recycled materials—including reclaimed wood and plastic packaging. That means your carbon footprint will stay light. Clam Shell also matches the appearance of 100 percent real wood, helping any backyard look its best!

    Clam Shell looks fantastic with a soft gray color and deep-set graining. What’s more, these boards are made with a cutting-edge protective shell designed to resist fading, stains, scratches, and mold. Maintenance is minimal, so you’ll spend the weekend enjoying your deck, not maintaining it.

    Product Dimensions

    • Actual Dimensions – 1″ x 5.5″ (24 mm x 140 mm)
    • Length – 12′, 16′, and 20′ (366 sm, 487 sm, and 609 sm)
    • Shape of boards – grooved and square-edged varieties available


    TREX has a reputation for low maintenance, and ease of installation is a big part of that. That’s the case with TREX Enhance Clam Shell, whether you choose grooved or square-edged decking boards. Depending on the boards you choose, fasteners will vary:

    • Grooved decking boards function their highest when secured by Hideaway Universal Grooved Connector Clip Plastic or Stainless Steel fasteners. Universal Grooved Start Clips also work well.

    If necessary, Trex grooved boards can be fastened with Color Match, Cortex, or Starborn Proplug fasteners. Before using them, however, check for compatibility with both TREX and the manufacturer.

    • Square-edged boards from TREX also rely on hidden fasteners. Decking contractors in Ontario who specialize in TREX products prefer to work with Cortex®, Starborn Proplug, and Color Match screws.

    When installing, remember that the deck’s underneath joist must be 16” on-center. If you plan to install the decking boards diagonally, the underneath joists’ structure must be 12” on-center. You’ll end up spending around 35 percent more on fasteners when you opt for diagonal installation.

    Color combination

    The smooth gray appearance of TREX Enhance Clam Shell is perfect for making your backyard a perfect summer getaway. Most homeowners think Clam Shell looks best as a stand-alone main deck. If you want to add a picture frame, however, TREX Transcend Gravel Path and TREX Transcend Tiki Torch form strong color combinations.

    Clam Shell decking boards also work as picture framing for a main deck. The following color combinations are ideal: TREX Transcend Gravel Path, TREX Transcend Havana Gold, TREX Transcend Island Mist, and TREX Transcend Tiki Torch.


    TREX Enhance Clam Shell decking boards come with a fascia board (14mm x 184mm x 365cm and 14mm x 288mm x 365cm). The board is designed for use either as a fascia for the deck edges or a riser for the deck steps.