1-3/4 Inch Coil Roofing Nails
Products
3 products
Where 1-3/4 inch coil roofing nails earn their keep
The second size every truck needs
1-3/4 inch is the second most stocked length on a roofing truck, and the size that saves your bacon when the spec calls for deeper penetration than 1-1/4 inch can give you.
Use it on tear-overs (nailing through one existing layer), thicker decking, designer shingles, and any time the wind code demands a longer fastener.
The 3/4 inch penetration rule and why it matters
Every major shingle manufacturer writes the same line into installation specs. Nails must penetrate the deck a full 3/4 inch, or fully through the deck if it is thinner than that.
On a tear-over, your shingle stack-up gets thicker fast. Old shingle plus new underlayment plus new shingle plus 1/2 inch deck equals a 1-1/4 inch nail with maybe 1/4 inch of bite. That is a code fail. 1-3/4 inch gets you back to spec.
When to choose 1-3/4 inch coil roofing nails
Reach for this length on tear-overs and lay-overs, on 3/4 inch or thicker decking, on designer and presentation shingles, in hurricane and tornado wind zones where local code requires deeper penetration, and on cedar shake replacement work where you are going through new underlayment plus decking that has seen 30 years of weather.
Hot-dipped galvanized is the everyday workhorse at this length. Ring shank adds serious pull-out strength and is the right call for hurricane code areas. Stainless is for cedar tear-overs and oceanfront work. See our full nail size guide for the decision tree.
Frequently asked questions
- When do I actually need 1-3/4" instead of 1-1/4"?
- Three jobs: nailing over an existing layer of shingles (tear-over / lay-over), 3/4" plank or T&G decking, and any designer or presentation shingle thicker than ~1/2". You also bump up if local high-wind code requires deeper penetration.
- Will 1-3/4" point through 1/2" plywood?
- Yes, and that's a problem on the underside if it's exposed (think open soffits or porch ceilings). On standard attic-side decking it's not a structural issue, but the points will be visible from below. Drop to 1-1/4" or 1-1/2" if appearance matters.
- Are these slower to drive than shorter nails?
- On a cordless: yes, slightly. Each shot uses ~15% more battery. On pneumatic at proper PSI (90–100): no perceptible difference.
- Will they fit my standard 15° coil roofing nailer?
- Yes. Every coil nail on this page is the standard 15° wire collation that fits Bostitch, MAX, Metabo HPT, DeWalt, Milwaukee, Hitachi, and Senco coil roofing nailers. The gun's max length must be 1-3/4" or longer; almost all current models are.