The Roofing Permit Violations That Fail Inspections in Tampa Bay — And What Each One Costs

Published August 8, 2026. Code references reflect the Florida Building Code, 8th Edition (2023), in effect statewide as of this date. Fees cited are Hillsborough County’s published Development Services fee schedule. Always confirm current requirements with Hillsborough County Development Services at (813) 272-5600 before work begins.

If you live in Brandon, Riverview, Valrico or anywhere else in Hillsborough County and you’re replacing your roof this year, there’s a step most homeowners never think about until it goes wrong: the inspection. Every permitted re-roof in the county gets checked — a Progress Check (or an uploaded Roof Mitigation Verification Statement) and then a final roof inspection. When something doesn’t match code, the inspection fails, the work stops, and the clock on your project resets.

Hillsborough County charges a $125 re-inspection fee when permitted work fails its initial inspection, and by state law (F.S. 553.80) the fee for a fourth or subsequent re-inspection is set separately and climbs from there. That’s the small cost. The real cost is the tear-out: some of these failures require pulling shingles back off a section you already paid to have installed.

Below are the failure points that show up over and over on Florida residential re-roofs, drawn from Florida Building Code requirements and the published re-roof inspection checklists that Florida building departments hand to contractors. If your contractor gets these right, your inspection is routine. If they don’t, you’ll know what you’re looking at.

1. Missing secondary water barrier

This is the single most cited mistake on Florida shingle re-roofs. When a roof covering is removed and replaced, Section R908.7.2 of the Florida Residential Code requires a secondary water barrier to be installed. Charlotte County’s own “Top Residential Roof Inspection Mistakes” handout leads with exactly this: contractors are often simply unaware the requirement applies to their job.

Why it matters to you: the secondary water barrier is the layer that keeps water out of your house after the shingles blow off in a storm. It’s the difference between a damaged roof and a damaged roof plus ruined drywall, insulation and flooring. It is not an upgrade. It is code.

Cost to correct: if it’s caught at dry-in, it’s a delay. If it’s caught after the shingles are on, the covering over the affected area comes back off.

2. Drip edge installed wrong (or not at all)

Section R905.2.8.5 is specific in a way that surprises people. Drip edge is required at eaves and gables. Laps must be a minimum of 3 inches. Eave drip edge must extend 1/2 inch below the sheathing and back onto the roof at least 2 inches. And fastening spacing depends on your wind exposure: a maximum of 12 inches on center normally, but a maximum of 4 inches on center where the design wind speed is 110 mph or greater or the mean roof height exceeds 33 feet.

That last clause is the one that catches Hillsborough County jobs. We sit in the Wind-Borne Debris Region under the FBC — we are not in the High-Velocity Hurricane Zone (that’s Miami-Dade and Broward only), but our wind design values routinely trigger the tighter 4-inch fastening schedule. A crew that habitually works to a 12-inch pattern will fail here.

3. Nailing pattern and fastener type that don’t match the product approval

Shingle fastening isn’t a matter of preference. The number of nails, their length, their placement, and their corrosion resistance all come from the manufacturer’s Florida Product Approval or Miami-Dade NOA for that specific shingle. In much of west-central Florida, product approvals at our wind speeds require the six-nail pattern rather than four — and a four-nail installation on a six-nail approval is a failed inspection and a warranty problem in the same breath.

Related and equally common: the products on the roof don’t match the product approvals uploaded to the permit. Florida inspection checklists are blunt about this — if the documents and the materials don’t match, the inspection is resulted as a fail on the spot.

4. Deck re-nailing (roof mitigation) not done to spec

When the old covering comes off, Section 706.7.1 of the Existing Building Code requires the existing roof deck to be strengthened with additional fasteners: 2 1/4-inch 8d ring-shank nails with rings extending at least 1 1/2 inches from the tip, spaced 6 inches on center along the framing below. Existing qualifying nails can count toward that spacing.

In Hillsborough County this is verified either at the Progress Check inspection — which can be done virtually with photos and video (VRT-ROF-Dry-In) — or through the Roof Mitigation Verification Statement uploaded via HillsGovHub. Skipping the documentation is as much a failure as skipping the nails. Ask your contractor for a copy of whichever one they used; it’s also what a future buyer’s inspector will want to see.

5. Low-slope sections treated like the rest of the roof

Plenty of Brandon and Riverview homes have a low-slope porch cover, lanai roof or addition tied into a standard shingle roof. Slopes between 2:12 and 4:12 require a two-ply dry-in under shingles (self-adhered membrane systems being the exception). Crews moving fast across a big field of 5:12 shingles regularly carry the same single-layer detail onto the low-slope section. That’s a fail, and it’s also the exact spot where Tampa Bay’s afternoon downpours find their way in first.

6. Ventilation that doesn’t meet the ratio

Attic ventilation must be provided per FBC Section 1503.5 and Section 1203.2, and per the vent manufacturer’s instructions. Two things go wrong. First, exhaust vents get added without matching intake at the soffits, so the system pulls conditioned air out of the house instead of moving air through the attic. Second, mixed exhaust types on one attic — ridge vent plus powered vents plus turbines — short-circuit each other. Both fail on the ratio math, and both cost you on your July power bill in a county where attic temperatures run brutally high.

7. Flashing at walls, chimneys, valleys and penetrations

Flashing is reviewed with the inspector at the progress stage and verified at final. Section R905.2.8.5 sets the minimum for the L-flashing detail — a minimum 4×4 with a minimum 4-inch sealed overlap, attached a minimum 6 inches on center. Reusing old, brittle flashing to save an hour is one of the most common shortcuts on a re-roof and one of the easiest for an inspector to spot.

How to keep your inspection boring

You don’t need to memorize the code. You need to ask four questions before the first shingle comes off:

• “Which product approval are you installing to, and what nailing pattern does it require?” A good answer is specific and immediate.
• “How are you meeting the secondary water barrier requirement?” There should be no hesitation.
• “Are you doing a Progress Check inspection or uploading the Roof Mitigation Verification Statement?” Either is fine. “Neither” is not.
• “What’s the drip edge fastening spacing on my house?” If the answer isn’t tied to wind speed and roof height, keep asking.

And one practical note: do not make your final payment before the county’s final roof inspection passes. That single habit protects you from most of what’s on this list.

Brandon Roofing pulls permits, schedules inspections, and documents every job to Hillsborough County requirements as a matter of course — because a failed inspection costs us more than it costs you. If you’d like a straight answer about the roof you have now, or a second read on an estimate you’ve been handed, call us at (813) 321-2340 for a free inspection.

This article is general information, not code interpretation or legal advice. Code applicability depends on your specific structure, slope, wind exposure and scope of work. Verify requirements with Hillsborough County Development Services at (813) 272-5600.