Our Sankey diagram visualizes how impact-rated French doors dissipate hurricane forces across multiple defense layers. Understand the engineering that protects your Broward home.
How 100% of wind energy is absorbed and redirected
Understanding the multi-layer protection system of impact French doors
Laminated glass with PVB interlayer absorbs and distributes impact energy across the entire panel
Reinforced aluminum or vinyl frames transfer loads to the structure through engineered anchors
6-point locking with structural astragal distributes pressure across multiple engagement points
Compression seals absorb vibration and prevent water infiltration under cyclic loading
Hurricane-rated options for Broward County HVHZ installations
Traditional French door pair with center astragal and multi-point locking
Single operating door with fixed sidelite panels for wider openings
Three-panel system for maximum opening width with center fixed panel
Key steps for proper HVHZ-compliant installation
Precise measurements for custom manufacturing with NOA-compliant specifications
Reinforce rough opening per engineer specifications with proper flashing
Level and plumb frame with structural anchors at NOA-specified spacing
Hang doors, install astragal, adjust multi-point locking system
Weatherseal application, final adjustments, county inspection
Mandatory specifications for HVHZ compliance
French doors must meet design wind speeds for Broward HVHZ locations.
170-180 mph design wind speed required. Larger openings require careful engineering of astragal connections.
Design pressures: +60/-75 PSF typical for residential applications.
Large missile impact testing required for both panels and astragal.
9-lb 2x4 @ 50 fps with 9,000 pressure cycles. Astragal joint must maintain integrity throughout testing.
Doors must remain operable and in frame after impact.
Multi-point locking with structural astragal between door panels.
Minimum 6-point engagement for double French doors. Hinges rated for 400+ lbs per door.
Flush bolts at top and bottom of inactive leaf required.
Complete door system must have current NOA approval.
Miami-Dade NOA covering frame, panels, glass, hardware, and weatherseal as tested assembly.
Installation per manufacturer's approved details. Field modifications void approval.
Elegance meets hurricane protection
Large glass panels flood interiors with light while maintaining hurricane protection. No need for shutters blocking views.
Impact French doors add significant resale value. Buyers appreciate both the aesthetic and hurricane protection benefits.
Qualify for 15-30% insurance premium discounts with properly documented impact-rated door installation.
Laminated impact glass reduces exterior noise by 25-50% compared to standard doors. Peaceful interiors year-round.
Get precise wind load calculations and product specifications for your Broward County French door project.