Truss roof on a new house in Clay County, Florida, 130 mph wind zone.

Inspection outcome: The inspector will most likely fail the dry-in.

Code violations (per IRC/Florida Building Code – Residential, 2020 ed.):

1. Roof decking fasteners (Section R803.2 / R502.3): - 7/16" OSB requires 8d common nails (0.162" shank, 2½" long) — OK. - Spacing must be 6" o.c. at edges and 12" o.c. in the field — OK. - However, smooth-shank nails are not compliant in high-wind zones. Code requires ring-shank or screw nails for 7/16" OSB in 130 mph zones (per manufacturer specs and FBC Section R502.3.1). - Fix: Replace with 8d ring-shank nails** or #8 screws at 6"/12" spacing.

1. H2.5 clips (Section R802.3 / R502.3.1): - Must be installed on every truss — not every other one. - Each clip requires three 8d x 1½" (or 1¼") common nails — OK if used. - Fix: Install H2.5 clips on every truss, properly fastened.

Bottom line: The inspector will flag both the nail type and missing clips. You’ll need to remove and replace smooth nails with ring-shank and add clips to every truss before re-inspection.

Safety note: This is a structural/wind uplift issue — improper fastening can lead to roof failure in storms. Not a DIY fix if you're not experienced with roofing systems.

The inspector will fail it. Hard stop.

1. Nailing Schedule (FBC 2023 R803.2.2.1 / Table R602.3(1)) For 7/16" OSB in the 130 mph (Exposure B) zone, the code requires 8d ring-shank nails (0.113" x 2.375") at 4" o.c. edges / 6" o.c. field.

• Your errors: Smooth shank (zero withdrawal resistance), wrong spacing (6/12 vs 4/6), wrong nail type.
• Result: The deck has ~35% of required uplift capacity. It will blow off.

2. Truss-to-Top Plate Connections (FBC R802.11 / Table R602.3(1)) In 130 mph, you need hurricane ties (e.g., Simpson H10A, H2.5A with full nailing) on EVERY truss, not every other.

• Your errors: Skipped every other truss (50% capacity). H2.5A requires 5 nails into the truss and 5 into the plate (10 total); 3 nails is useless.
• Result: Trusses will roll/rotate off plates under uplift.

3. "How I did it up north" is not a code path. Florida Product Approval (FL#) and High Velocity Hurricane Zone (HVHZ) provisions apply statewide for 130 mph.

Fix before calling inspection:

1. Re-nail deck: Pull smooth shanks. Install 8d ring-shank at 4"/6". (Hand-nail edges if gun won't hit 4").
2. Straps: Install H10A (or H2.5A fully nailed 10d x 1.5") on EVERY truss. No skipping.
3. Strapping: Verify gable end bracing (R602.10) and roof-to-wall strap continuity.

Do not dry-in. If you cover this, you own the tear-off. Call the engineer of record if the framer pushes back—this is a structural deficiency, not a nitpick.