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Description
CONCEALoc Deck Fasteners
What Concealoc fasteners are
Concealoc is a hidden fastening system commonly used with grooved-edge decking. The fasteners sit inside the side groove of each board and are screwed down into the joist, pulling boards tight while leaving a clean, fastener-free deck surface.
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Concealoc Deck Board Fasteners are a type of hidden deck fastener system that ensures a smooth, fastener-free surface on decks. They offer superior corrosion resistance and a superior holding power over traditional deck fasteners. This makes them ideal for use in areas with extreme weather conditions and in locations where moisture is present. They are easy to install and are made from heavy-gauge black-coated steel. They also come with a lifetime warranty.
DETAILS:
CONCEALoc is a hidden fastener system that combines easy installation with the aesthetic look of a fastener-free surface. The CONCEALoc hidden fastener system was made to be used exclusively with Azek and TimberTech decking. Fasten your grooved or solid (after a groove has been routed in) Azek or TimberTech deck boards with this quality product for a pleasing, lasting finish! This system makes installation easy by eliminating the need for self-spacing each deck board. The CONCEALoc fasteners provide consistent spacing between the sides of each deck board. Use the CONCEALoc hidden fastener system to finish your head turning dream deck!
The CONCEALoc® Hidden Fastener System is designed for installation of edge-grooved planks, ensuring a smooth, safe, and attractive deck surface.
The "wings" on each CONCEALoc® Fastener insert into side grooves in adjoining Deck Boards. Hidden below the surface of the deck, they are securely held to the top of the underlying structural joists with a single stainless steel screw (included) and insure proper and consistent spacing of the deck boards. Ingenious!
How they work
- The clip slides into the groove on the side of the deck board
- A single screw secures the clip to the joist
- The next board locks into the opposite side of the clip
- Spacing is automatically set by the clip
- This creates consistent gaps between boards for drainage and expansion.
Key benefits
- No visible screws – smooth, high-end deck appearance
- Uniform spacing – typically ~¼" gaps (varies by version)
- Faster installation – especially with collated screws
- Reduced surface damage – no mushrooming or cam-out
- Comfortable underfoot – barefoot- and furniture-friendly
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