Using hidden fasteners to install deck boards is becoming very popular and is standard operating procedure on Design Builders deck projects. Consumers prefer hidden fasteners to avoid the appearance of unsightly nails or screws on the surface of the deck and to create a more finished looking product. There are several different method, products, and systems. The most popular ways to install decks with a hidden fastener system include Tiger Claw, Biscuit Joining, Cortex Plugs, and Camo Hidden Fastening System.
The Tiger Claw system is used for wood and some maintenance free product. It fastens the side of the board to the joist. This system is ideal for deck products that do not come pre-grooved. We find that this method is more labor intensive. The Tiger Claws screws are also quite expensive, so we do recommend using this method.
Biscuit joining fastens from the side of the deck board to the joist as well as well. The small oval shaped "biscuits" are ideal for boards that come pre grooved. If using this method on boards that do not have a groove already, you have to create a groove using a biscuit joiner. Using this system is best on hardwoods that do not readily take screws. Most IPE and Mahogany come pre-grooved, so this is our preferred method for those products.
Cortex Plugs are a hidden fastening system that is used for Azek and Trex decking products. This system recesses the screws approximately 3/8" below the surface of the deck board. You then install the color matching plugs in the holes that is created. The final appearance eliminates the visibility of screw heads. This is great to use on stairs and end boards where the angled screws and other hidden fasteners cannot be used. However, using this to install an entire deck is pricey because the Cortex Plugs, screws, and bits are very expensive.
The Camo hidden fastening tool fastens the deck boards in a similar way to hardwood flooring. It angles screws from the side of the deck boards. The tool acts as a guide for the screw to ensure that they are at the correct angle. This, in our opinion, is the best hidden fastener system. Each deck board gets two screws per joist insuring that the deck is properly fastened, the installation is just as fast as screwing the deck down, and the screws themselves do not need to be stainless steel which makes this option the most economical.
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