how to install trex composite decking with hidden fasteners


How to Install Trex Composite Decking with Hidden Fasteners

Are you looking for a way to upgrade your outdoor space with a beautiful and low-maintenance decking system? Trex composite decking with hidden fasteners is the perfect solution for a high-performance and elegant outdoor living area. With easy-to-follow instructions and simple tools, you can install Trex decking with hidden fasteners in a weekend or less. In this article, we will guide you through the steps and tips to ensure a successful installation of your Trex composite decking with hidden fasteners.

Tools and Materials

Before you start the installation process, make sure that you have the necessary tools and materials on hand. The essential tools include:

- Cordless drill

- Circular saw or miter saw

- Jigsaw

- Chalk line

- Tape measure

- Carpenter square

- Level

- Safety glasses and gloves

The materials you will need depend on the dimensions and specifications of your decking project. Typically, you will need:

- Trex composite decking boards

- Trex hidden fasteners and screws

- Joists and beams

- Post anchors

- Decking lights (optional)

- Fascia boards and corner trim (optional)

Preparing the Deck Frame

Once you have your tools and materials, it's time to prepare the deck frame for the Trex decking installation. First, clean the deck surface and remove any debris, nails, or screws. Then, install the deck joists and beams per the manufacturer's instructions, using either wood or steel framing. Check that the frame is level and square, and adjust it as necessary.

If you plan to install decking lights, now is the time to run the wires and drill the holes for the fixtures. Plan the light placement carefully and ensure that there is sufficient power supply for the lights.

Installing the Trex Decking Boards with Hidden Fasteners

Now comes the exciting part – installing the Trex composite decking boards with hidden fasteners. First, lay out the first board parallel to the house or building and use the chalk line to mark the cut lines for the overhanging boards. Cut the boards to the desired length with the circular saw or miter saw, making sure to follow the manufacturer's guidelines for saw blades and cutting angles.

Next, attach the Trex hidden fasteners to the grooves on the sides of the decking boards, spacing them according to the recommended gap for your climate and location. Use the cordless drill to secure the fasteners to the decking joists, making sure that the boards are level and snug. Repeat this process for the remaining boards, trimming the ends as necessary.

Tips for a Successful Trex Decking Installation

To ensure a smooth and sturdy Trex decking installation, follow these additional tips:

1. Be mindful of the temperature and humidity during the installation. Cold temperatures and high humidity can affect the spacing and alignment of the boards.

2. Use the deck board overhang as a guide to cutting the fascia boards and corner trim. Trim them to the same length and width as the decking boards, and install them around the perimeter of the deck for a professional finish.

3. To minimize the visibility of the screws and fasteners, use a jigsaw to create a plug from a scrap piece of decking board. Insert the plugs into the screw holes and tap them down with a rubber mallet. Sand the plugs flush with the deck surface.

4. For easy maintenance and long-lasting durability, clean your Trex decking regularly with mild soap and water, and never use a pressure washer on it.


Installing Trex composite decking with hidden fasteners is a rewarding and practical way to upgrade your outdoor living space. With the right tools, materials, and techniques, you can achieve a stunning and low-maintenance deck that will provide years of enjoyment. Start planning your Trex decking project today and transform your backyard into a beautiful oasis.


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