If you’re planning to upgrade your deck with a clean, modern look, learning how to install CONCEALoc fasteners is a smart move. These hidden fasteners eliminate visible screws and nails, giving your deck a sleek, seamless finish that’s both stylish and durable.
But how do you get started? This guide will walk you through every step, making the process simple and straightforward—even if you’ve never installed decking before. By the time you’re done, you’ll have a beautiful deck with fasteners you can’t even see.
Ready to transform your outdoor space? Let’s dive into the easy, effective way to install CONCEALoc fasteners.

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Concealoc Fasteners Basics
Understanding Concealoc fasteners is key for a smooth deck installation. These fasteners offer a hidden, clean look by attaching decking boards without visible screws. This section explains what Concealoc fasteners are and their main benefits.
What Are Concealoc Fasteners
Concealoc fasteners are hidden clips used to secure deck boards. They fit into grooves on the board edges. Screws attach the fastener to the joist below, holding the boards tightly. This method hides the screws, giving a neat surface. Concealoc fasteners work well with composite and wood decking.
Benefits Of Using Concealoc
Concealoc fasteners create a smooth, splinter-free deck surface. They prevent screw heads from showing, improving the deck’s look. The fasteners allow wood to expand and contract naturally. This reduces warping and cracking. Installation is faster compared to traditional screws. They also help keep deck boards evenly spaced for better drainage and airflow.
Tools And Materials
Installing CONCEALoc fasteners requires specific tools and materials to ensure a smooth and secure fit. Preparing everything before you start saves time and effort. Knowing what you need helps avoid interruptions during installation. Below is a clear list of essential tools and required materials for the job.
Essential Tools
- Drill with screwdriver bit for fastener screws
- Rubber mallet to gently tap fasteners in place
- Measuring tape for accurate spacing
- Carpenter’s pencil to mark measurements
- Speed square to keep boards aligned
- Clamp to hold boards steady during installation
- Safety glasses to protect your eyes
- Work gloves for hand protection
Required Materials
- CONCEALoc fasteners designed for your decking brand
- Deck boards with grooved edges compatible with fasteners
- Galvanized or stainless steel screws for corrosion resistance
- Start and stop clips to secure board ends
- Joists spaced correctly for decking support
- Wood filler or sealant for any minor gaps
Preparing The Deck
Preparing the deck is a crucial step before installing Concealoc fasteners. It ensures a strong, even surface for the hidden fasteners to grip. Proper preparation helps the deck last longer and look clean. Take time to check every part carefully.
Checking Joist Spacing
Measure the distance between each joist. Concealoc fasteners require consistent spacing, usually 16 inches apart. Uneven joists can cause problems with fastening and board alignment. Use a tape measure and mark spots clearly. Fix any joists that are too far apart or too close.
Grooving The Deck Boards
Grooving the deck boards is necessary for Concealoc fasteners to fit. Use a router with the right bit to cut grooves along the board edges. Make sure grooves are straight and uniform in depth. Clean out any dust or debris from the grooves before fastening. This step allows the fasteners to lock securely and keep the boards in place.

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Installing Concealoc Fasteners
Installing CONCEALoc fasteners offers a clean, hidden look for your deck. These fasteners keep the deck boards secure without visible screws on top. The process involves careful positioning, attaching to joists, and sliding deck boards into place. Each step ensures a tight fit and lasting durability.
Positioning The Fasteners
Start by placing the CONCEALoc fasteners inside the groove on the edge of the deck board. Align each fastener evenly along the joist line. Make sure the fasteners fit snugly to avoid gaps. Proper positioning helps maintain consistent spacing between boards.
Securing To Joists
Use a screw to fasten the CONCEALoc clip directly into the joist. Drive the screw straight to hold the fastener firmly. Do not overtighten, as this could damage the clip or joist. Secure fasteners at every joist for strong, even support.
Sliding Deck Boards Into Place
After securing the fasteners, slide the next deck board’s groove onto the clips. Push the board until it snaps into place. The clips grip the board edges tightly, locking them without visible screws. Repeat this step for each board along the deck.
Using The Pneumatic Installation Gun
Using the pneumatic installation gun makes installing Concealoc fasteners faster and easier. This tool helps drive the fasteners securely into the deck boards. It saves time and reduces hand strain. Proper use ensures a strong, clean finish for your deck.
Setting Up The Gun
Start by connecting the gun to an air compressor. Check the pressure; it should match the gun’s requirements. Load the Concealoc fasteners into the gun’s magazine. Make sure each fastener fits well to avoid jams. Test the gun on scrap wood to confirm it works smoothly.
Operating Tips
Hold the gun firmly and align the fastener with the groove on the deck board. Press the trigger gently to drive the fastener into the wood. Avoid pushing too hard; let the gun do the work. Keep the gun perpendicular to the board for a straight install. Move steadily along the deck, placing fasteners at each joist for secure attachment.
Handling Special Situations
Handling special situations during Concealoc fastener installation can ensure a smooth, professional finish. Some deck areas require extra care and precise techniques. This section covers key tips for challenging spots on your deck.
Installing The First And Last Boards
The first board needs a stable start. Use starter clips or screws to fix it firmly to the joists. This prevents movement and aligns the deck properly.
The last board often requires trimming to fit the edge. Attach it using face screws or specialized end clips. Ensure the fasteners are hidden and secure for a clean look.
Working On Angled Or Irregular Decks
Angled decks need precise measuring and cutting. Mark the boards carefully to match the angle. Use a router to create a groove for Concealoc fasteners along the cut edges.
Irregular shapes may need custom clips or additional supports. Place fasteners closer together to keep boards stable. Take your time to fit each piece perfectly.
Finishing Touches
Finishing touches complete your deck installation using Concealoc fasteners. This step ensures a polished and professional look. Pay close attention to trimming and adjusting boards. Also, adding fascia boards enhances the deck’s appearance and durability.
Trimming And Adjusting Boards
Trim deck boards to fit perfectly along edges and corners. Use a saw to make clean, straight cuts. Check each board for proper alignment. Adjust boards slightly to maintain consistent gaps. These small tweaks improve the deck’s overall look. Ensure no fasteners are exposed after trimming. Sand rough edges for safety and smoothness.
Adding Fascia Boards
Fascia boards cover the deck’s frame edges. They hide joists and fasteners for a neat finish. Measure the deck perimeter before cutting fascia boards. Attach fascia with Concealoc fasteners or screws. Keep boards flush with the deck surface. This step protects the frame from weather damage. Fascia boards also add style and value to your deck.

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Maintenance And Troubleshooting
Proper maintenance and troubleshooting keep Concealoc fasteners working well. Regular care helps prevent damage and extends fastener life. Checking fastener condition often avoids costly repairs later.
Checking Fastener Stability
Inspect fasteners regularly to ensure they are tight and secure. Look for any movement or looseness in the fastener clips. Use a screwdriver to gently test the screws for firmness. Replace any loose or damaged fasteners immediately. Stable fasteners maintain the deck’s safety and appearance.
Common Issues And Fixes
Fasteners may sometimes cause problems like squeaking or board shifting. Squeaks often come from loose screws; tightening them usually stops noise. Boards that move or separate might need realigning and refastening. Rust or corrosion on fasteners requires replacing affected clips. Keep fasteners clean and dry to reduce wear and tear.
Frequently Asked Questions
What Is The Gap With Concealoc Fasteners?
The gap with CONCEALoc fasteners is 3/16 inch, ensuring proper spacing between deck boards for expansion and drainage.
Do Trex Hidden Fasteners Go On Every Joist?
Trex hidden fasteners must be installed on every joist to securely hold each deck board in place.
How Many Concealoc Fasteners Do I Need?
Use one CONCEALoc fastener per joist for each deck board. Calculate total fasteners by counting joists times boards.
How Do You Install Hidden Fastener Decking?
Slide the hidden fastener into the deck board groove. Align and secure it to each joist. Continue along the board length.
Conclusion
Installing Concealoc fasteners is simple and effective. Start by preparing your deck boards and joists carefully. Slide each fastener into the groove and secure it firmly on every joist. Work systematically from one side to the other for best results.
Double-check each fastener to ensure a tight fit and even spacing. This method creates a clean, smooth deck surface without visible screws. Following these steps helps you build a sturdy and attractive deck. Enjoy your project and the lasting quality of Concealoc fasteners.


