Commercial roofing in Riverview, FL

Riverview is unincorporated, so roof permits come from the Hillsborough County building office. Confirm current forms and fees with that office. A Riverview roof permit filed today falls under the 2023 edition of the code, in force since the last day of 2023. A filing made on or after December 31, 2026 falls under the Ninth Edition instead, so a bid that spans that date deserves a second look.

The hurricane zone with its own roofing permit form and Notice of Acceptance product rules is limited to Broward and Miami-Dade. Hillsborough County sits outside it. Statewide product approval does apply to roofing here, and a product cannot be sold as hurricane protection unless it is approved under Fla. Stat. 553.842. Ask any bidder for the approval number and check it in the Florida Building Commission lookup.

Most commercial roofs here are low-slope. The code sets a minimum slope of one-fourth unit in 12 for built-up, modified bitumen, single-ply and spray foam systems. Positive drainage means the roof sheds water within 48 hours of rain. Tampa-area rainfall averages 49.48 inches a year, with about 61 percent falling June through September, so a roof that holds water will be tested every summer.

Where a roof edge rises above the surface and could trap water, the code calls for secondary overflow drains or scuppers. Ask each bidder where the overflow is and how it is sized. Also ask whether the existing deck is sound. A recover over a soaked roof, or one with two or more layers, is barred, and a full tear-off to the deck is required.

• The system named by type and material standard, such as TPO under ASTM D6878.
• The product approval number, checked in the state lookup.
• Who pulls the permit, and the Notice of Commencement before the first inspection.
• How the bid handles ponding, overflow drains and deck repair.
• The edge metal tested under ANSI/SPRI ES-1 or RAS 111.

A general contractor must subcontract roofing work unless that contractor holds the state roofing certificate or registration. Verify the license of whoever signs the roof contract through the state. Permits lapse too: work must start within 6 months of issuance, or the permit goes invalid.