* Corrosion-resistant: Cedar is naturally resistant to decay, but using corrosion-resistant nails will ensure that the fasteners don't fail over time.
* Ring-shanked: These nails have rings or ridges along the shank, which provide superior holding power compared to smooth-shanked nails. The ridges "grip" the wood fibers, preventing the nail from backing out as the wood expands and contracts with changes in moisture.
* Thin: Using too thick of a nail can split the tongue and groove.
Here are some specific nail types that are well-suited for this application:
* Stainless Steel Ring-Shank Nails: These are the best option for superior corrosion resistance and holding power, especially in coastal or high-moisture environments. They are more expensive but will last the longest.
* Hot-Dipped Galvanized Ring-Shank Nails: These provide good corrosion resistance at a lower cost than stainless steel.
* Aluminum Ring-Shank Nails: While lighter and corrosion-resistant, aluminum nails are softer than steel and may bend more easily during installation. They are a good option when stainless or galvanized aren't available, or weight is a primary concern.
Nail Size:
* The length of the nail will depend on the thickness of the cedar tongue and groove. As a general guideline, the nail should penetrate at least 1 1/2 inches into the framing or substrate behind the cedar. Consider the thickness of the tongue and groove, plus the desired penetration depth, to determine the minimum nail length.
Installation Tips:
* Pre-drilling: If the cedar is particularly dry or dense, pre-drilling pilot holes can help prevent splitting, especially near the edges of the tongue and groove.
* Nail placement: Drive the nails at a slight angle (about 45 degrees) through the tongue and into the framing or substrate. This helps to secure the board and prevent it from pulling away.
* Countersinking: Countersink the nails slightly below the surface of the wood. This will allow you to fill the nail holes with wood filler if desired, creating a more seamless appearance.
In summary: Use stainless steel or hot-dipped galvanized ring-shank nails of an appropriate length for the thickness of the cedar tongue and groove. Pre-drilling and careful nail placement will help to ensure a secure and long-lasting installation.