how to install composite decking with hidden fasteners youtube


Composite decking is a popular outdoor flooring solution that is known for its long-lasting durability, resistance to stains and fading, and aesthetic appeal. One of the best ways to install composite decking is with hidden fasteners because they create a seamless, uniform look that enhances your deck's overall appearance. In this comprehensive guide, we'll show you how to install composite decking with hidden fasteners using a step-by-step process.

1. Overview of Hidden Fasteners

First, let's discuss the basics of hidden fasteners. As the name suggests, these fasteners are hidden from view once the decking is installed. They are designed to fit into grooves along the sides of composite decking boards. Hidden fasteners come in various styles, sizes, and materials, and each has specific benefits and disadvantages. Some types of hidden fasteners require pre-drilling while other types slide right into place.

Typically, hidden fasteners work with decking that has a thickness of 1 inch or less. They can be used with any composite decking brand or color, and they ensure that the decking is securely attached to the joists while providing a sleek, modern appearance.

2. Preparing for Decking Installation

Before you begin installing the composite decking, you'll need to ensure that the substructure is sturdy and level. Start by measuring the width and length of the deck to determine how many decking boards you'll need. Make sure that the joists are spaced no more than 16 inches apart, and that they are perpendicular to the decking boards.

Next, install an appropriate number of support posts, beams, and footings according to local building codes. Remember to use pressure-treated lumber for any components that come into contact with the ground to prevent rot and decay. If you're unsure about the correct spacing or materials, consult with a professional contractor or building inspector.

3. Installing First Decking Board

Once the substructure is installed and level, it's time to start laying the decking boards. Start by laying the first decking board flush against the house wall, with the groove side facing away from the wall. Use a chalk line to mark the location of the hidden fasteners along the entire length of the board, making sure that they are evenly spaced and aligned with the joists.

Depending on the type of hidden fasteners you're using, you may need to drill pilot holes before inserting the fasteners. Follow the manufacturer's instructions carefully to avoid damaging the decking boards. Once the fasteners are in place, slide the second decking board into the grooves of the first, aligning it with the marks you made earlier. Continue this process until you reach the end of the deck.

4. Cutting and Sizing Decking Boards

When you reach the end of the deck, measure the remaining space and cut the last board to size. Remember to leave a small gap between the decking boards to allow for expansion and contraction due to changes in temperature and humidity. The gap should be approximately 1/8 inch, but slight variations are acceptable.

If you need to cut the decking boards to fit around posts, curves, or other obstacles, use a jigsaw or circular saw with a fine-toothed blade. Measure carefully and take your time to avoid making mistakes.

5. Finishing Touches

Once all the decking boards are installed, it's time to add the finishing touches. Apply a composite decking cleaner to remove any dirt, debris, or grime that may have accumulated during installation. Then, rinse the deck thoroughly with a garden hose or pressure washer.

Finally, add any accessories such as railing, stairs, or lighting fixtures to complete the look of your new composite decking. Enjoy your beautiful, low-maintenance deck for years to come!


Installing composite decking with hidden fasteners is a great way to create a clean, modern look for your outdoor space. Whether you're a seasoned DIYer or a first-time homeowner, this step-by-step guide will help you get the job done with ease. Remember to choose the right type of fasteners for your decking brand and thickness, and always follow the manufacturer's instructions carefully. By following these tips, you'll be able to enjoy a beautiful, long-lasting composite decking for many years to come.


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