Commercial roofing in Treasure Island, FL

Treasure Island runs its own Building Division, so commercial roof permits go to the city rather than the county. Confirm current requirements with that office before work starts, because permit clocks and inspection steps apply to the job.

Six months after issuance, a permit expires if no work has begun, and it also expires if work halts for a full six months. As long as an inspection clears within 180 days, the job is treated as still in progress. Plan the schedule so the permit stays valid through the full job.

Low-slope roofs need at least a 2 percent slope in new work. Ask each bidder how the roof will drain, and whether the design gives positive drainage within 48 hours of rain. Standing water is the most common reason flat roofs fail, so ask who will check ponding and recommend a structural review if it is possible.

• Ask for the roof's wind design and whether edges were tested to the standard named in the bid.
• Ask which membrane material is proposed and which ASTM standard it meets.
• Ask what overflow drains or scuppers are included where the parapet traps water.
• Ask how the bid handles any existing rooftop equipment being moved or replaced.