What are Hidden Deck Fasteners? Our Experts Explain
When you imagine a perfect deck, odds are you’re not picturing screw heads staring back at you. Hidden deck fasteners are the unsung heroes behind those flawless, smooth decking surfaces. Whether you're building a backyard haven or a high-end commercial space, these systems deliver both aesthetics and strength, without compromise.
Let’s walk through the essentials of hidden deck fasteners, using Simpson Strong-Tie’s industry-trusted solutions as our reference point.
What Are Hidden Deck Fasteners?
Hidden deck fasteners are systems that secure deck boards to the joists without visible screws on the surface. These fasteners are typically installed between or underneath boards, providing a clean, uninterrupted look while ensuring the structure remains strong and stable.
This type of fastening not only improves the visual appeal of the deck but also reduces the risk of splinters, snagged clothing, and trapped moisture that can occur around exposed fasteners.
Why Builders Use Hidden Fasteners
- Flawless Finish: Fastener-free surfaces give wood or composite decks a premium appearance.
- Long-Term Performance: Hidden systems reduce water intrusion and surface cracking.
- Smoother Installs: Many systems allow for easy spacing and consistent board alignment.
- Improved Safety: No exposed screws means less chance of stubbed toes or torn footwear.
Simpson Strong-Tie Hidden Fastener Systems
Simpson Strong-Tie offers a comprehensive lineup of hidden fastening systems engineered for strength, speed, and simplicity. Their solutions are compatible with a variety of decking materials, from hardwoods to composites.
1. EB-TY® Hidden Deck-Fastening System
One of the most recognized names in hidden fastening, the EB-TY® system uses biscuit-shaped polypropylene fasteners that fit into slots cut into the sides of deck boards.
- Best For: Wood and composite grooved-edge decking
- Installation: Fasteners sit between boards, secured with stainless steel screws at a 45° angle
- Spacing: Built-in tab ensures consistent ⅜" spacing
Variants:
- EB-TY® Premium: Features stainless steel reinforcements for extra holding power
- EB-GUIDE™: Installation guide that simplifies layout and speeds up install time
- EB-TY® Hidden Deck Fastener Combo Kit: Includes fasteners, screws, and driver bits
Check out our EB-TY offerings here for more information & pricing.
2. Deck-Drive™ DCU Composite Screw (Concealed)
While not a traditional hidden fastener, Simpson’s Deck-Drive™ DCU screws feature color-matching options that practically disappear in composite decking, especially when paired with pro plug systems.
- Best For: Surface fastening with a concealed finish
- Perks: Corrosion resistance, cleaner finish, reduced mushrooming
Key Tips for Installation (Simpson-Style)
If you're following Simpson Strong-Tie’s methods, here’s what to keep in mind:
- Board Prep: Use grooved-edge boards or a biscuit jointer to create slots for EB-TY® fasteners
- Spacing: Use fasteners as built-in spacers, no need for guesswork
- Screw Angle: Follow the 45° screw angle technique for maximum hold without surface disruption
- Fastener Material: Choose stainless steel screws for exterior durability, especially near pools or coastal zones
For composite systems, pre-drill when necessary and don’t overdrive plugs or screws, this keeps finishes clean and flush. Check out this video from Simpson Strong-Tie themselves, on best tips for installation:
Is Hidden Right for You?
DIYers often choose hidden systems for their aesthetic payoff, especially in personal outdoor living spaces. Professionals love them for upscale builds, where the final look and long-term performance matter most.
Pros:
- High-end appearance
- Fewer exposed components to maintain
- Can improve resale value on homes
Considerations:
- Slightly longer install times
- Higher upfront cost for materials
- Some systems are material-specific
Why Choose Simpson Strong-Tie?
When you go with Simpson, you’re not just buying fasteners, you’re investing in code-tested, contractor-trusted engineering. Their hidden fastener systems are rigorously tested and supported by robust documentation, installation guides, and customer service.
Plus, most Simpson systems are available in combo kits, saving time and ensuring you don’t miss a step or piece during your project.
Final Thoughts
Hidden deck fasteners transform a project from good to great. And with Simpson Strong-Tie, you’re backed by a brand that understands not just strength, but precision, ease, and finish.
If you’re planning your next deck build or upgrade, take a closer look at hidden fastening. It might just be the final detail your deck has been missing.
Do you still have questions about deck screws? Check out our other blog post: What are Deck Screws? And Other FAQ
