French Doors in Florida: Style, Security, and Storm Protection

Few architectural elements transform a room like French doors. That wall of glass opening onto a lanai or pool deck is quintessentially Florida living. But French doors also represent a significant engineering challenge in a hurricane zone — more glass area, more frame joints, and two panels that must seal against each other as well as against their frames.

Inswing vs. Outswing

This is one of the most consequential decisions in French door selection, and it's surprising how often it's made without full information.

• Outswing doors — The sash swings outward, against incoming wind pressure. This is why outswing is actually structurally superior in hurricane conditions — the wind is pushing the door into its frame, not trying to pull it out. Florida Building Code and many engineers actually prefer outswing for this reason. The practical challenge: you need clear space outside, and they can be harder to open in a strong wind because you're pushing against it.
• Inswing doors — More familiar aesthetically and easier to operate in normal conditions. The door seals against a stop molding inside the frame. In high-wind events, the locking hardware must work against the wind pressure, so multi-point locking systems are essential.

The Active/Inactive Panel System

Traditional French doors have one active panel (with the primary hardware and operation) and one inactive panel (held in place by flush bolts at the top and bottom of the door). For everyday use, only the active panel is moved. The inactive panel is deployed when you want the full opening width.

For impact-rated French doors, this system must be tested as an assembly — both panels, frame, glazing, and all hardware together. This is why you can't simply put impact glass in standard French door frames and call it compliant.

Multi-Point Locking

Single-point locking — one bolt at mid-height — is insufficient for impact-rated French doors. Quality impact French doors use multi-point systems that extend locking engagement to the top and bottom of the active panel, distributing load and dramatically improving resistance to forced entry and wind pressure.

Maintenance for Longevity

French doors have more moving parts and sealing surfaces than any other door type. Annual maintenance should include: inspecting and lubricating hinges, checking and replacing weatherstripping at the astragal (the vertical edge where the two panels meet), testing flush bolts, and inspecting the threshold seal. Properly maintained impact French doors will give you decades of service.