Commercial roofing in Juno Beach, FL

Only Broward and Miami-Dade counties fall inside the High-Velocity Hurricane Zone, so Palm Beach County sits outside it. That means the HVHZ permit application and its special inspection steps do not apply to a Juno Beach roof, though the general Florida Building Code still governs wind design and product approval.

When you do partial work, the 25 percent rule determines how much of the roof must be brought up to code. Not more than 25 percent of a roof can be repaired, replaced or recovered in any 12-month period unless the whole roof system is brought up to code. If your building's roof was built or repaired under the 2007 code or later, only the repaired portion must meet current requirements.

• Minimum slope for new low-slope roofs is one-fourth unit in 12, or 2 percent, for built-up, modified bitumen, single-ply and liquid-applied systems.
• Modified bitumen must meet one of the listed ASTM D6162, D6163, D6164, D6222, D6223, D6298 or D6509 standards.
• Confirm each product's Florida product approval number in the state lookup before you accept a bid.

Before you choose a bidder, have each one explain the drainage plan for the new roof. The code defines positive drainage as drainage that clears the roof within 48 hours of rain, with added slope where the deck deflects. Juno Beach averages 72.19 inches of rain a year at the beach station, so a roof that holds water for days will fail faster than the bid assumes.

Also ask whether the design includes overflow drains or scuppers in spots where a parapet could hold water. Also ask whether the bid includes sheathing or fascia repairs, since the contractor is responsible for any wood deck or fascia replaced during the work. Compare bids line by line on these items, not on the total alone.