Frequently asked questions

Yes. The sealed engineering drawings behind a Florida garage list the design pressures for each opening, and the roll-up or sectional door has to be rated to meet them. A door that blows in lets wind push on the roof from inside. The inspector may ask to see the door's product approval paperwork, so keep it with the permit file.

Usually, though the rules for garages and other accessory buildings inside a FEMA-mapped flood area are not the same as the rules for a house. Some counties allow flood vents and flood-resistant materials instead of raising the slab. Ask the county floodplain administrator what applies to your parcel before the garage is drawn.

Start with the vehicles. A bay only as wide as the car leaves no room to swing its doors or walk past a workbench, so most owners add width beyond the bare minimum. Depth matters for long-bed trucks, and a few extra feet at the back give space for shelving.

Most residential garages are clear-span: the frame carries the roof from one sidewall to the other, so the floor stays open. Very wide buildings sometimes add an interior column line to keep the frame lighter. Ask about it if you plan to turn a trailer across the full width.

Roll-up doors coil into a drum above the opening and suit steel buildings with little headroom. Sectional doors ride tracks along the ceiling, seal better and are more often insulated, but need clearance above the opening. Either type has to carry the wind rating the building is designed for.

Not always, but an uninsulated steel roof can drip on parked cars when warm, humid air meets a cool panel. Insulation with a vapor retarder under the roof sheets, or closed-cell foam, stops most of that drip and makes the garage more bearable in summer.

In most places, yes. A garage is an accessory structure, so the local building department checks setbacks from property lines, height limits and the engineered drawings before it issues a permit. Some homeowners' associations also restrict metal siding or colors.