Wind-borne debris region
A wind-borne debris region is a mapped coastal zone in the Florida Building Code and ASCE 7 where openings such as windows, doors, and skylights must resist flying debris through impact-rated glazing or approved shutters. In Citrus County, the rules affect skylight replacements and new installs on the coast and barrier areas.
A wind-borne debris region is a mapped area along the coast where the building code treats flying debris as a serious threat during a hurricane. Inside these zones, any opening in the building envelope, including windows, exterior doors, garage doors, and skylights, has to be protected or be able to survive an impact test. The term comes from ASCE 7 and is carried into the Florida Building Code, which sets the boundaries and the performance standards.
For skylights, the practical meaning is that the unit itself needs impact-resistant glazing, or the opening needs an approved protective cover such as a storm shutter. A standard acrylic or single-pane skylight that works fine inland may not meet the requirement in a wind-borne debris region. Frame, curb, and flashing details also matter, because the whole assembly has to hold up under the design wind pressures for that location, not just the glass.
The zone matters because it changes what can be legally installed and what a permit inspector will check. Replacement work and new construction are both affected, and the zone line is set by wind speed and distance from the coast, so two addresses a few miles apart can fall on different sides of it. Confirm the mapped status for a specific property with the county building department before ordering materials.
If you need a contractor who installs or certifies impact-rated skylights for coastal work, the storm and hurricane rated providers listed here are a place to start.