Complete guide to hurricane window specifications for Monroe County and the Florida Keys. Navigate HVHZ requirements with confidence using our comprehensive glazing standards.
Compare window types for Monroe County HVHZ compliance requirements.
Not HVHZ Approved
Limited HVHZ Use
Full Compliance
Monroe County is designated as a High Velocity Hurricane Zone (HVHZ) requiring windows rated for 180+ mph wind speeds. All windows must meet Miami-Dade NOA standards or Florida Product Approval for HVHZ areas. Design pressures typically range from +60/-70 PSF to +100/-110 PSF depending on exposure and elevation.
Yes, Monroe County requires impact-rated glazing or approved hurricane shutters for all windows within the HVHZ. Impact-rated windows must pass large missile impact testing (9-lb 2x4 at 50 fps) and cyclic pressure testing with 9,000 cycles. This applies to Key West, Marathon, Islamorada, and all Keys communities.
Design pressures in Key West typically range from +60/-70 PSF for low-rise residential to +80/-100 PSF for elevated structures and commercial buildings. Exact requirements depend on building height, exposure category (typically D for waterfront), internal pressure coefficient, and window location within the building envelope.
Waterfront properties in Monroe County face Exposure D conditions with higher wind loads due to open water fetch. Windows typically require 15-20% higher design pressures than inland locations. Salt spray resistance, marine-grade hardware, and corrosion-resistant aluminum or vinyl frames are essential for long-term durability.
PE-stamped wind load calculations specific to your Monroe County location, building height, and exposure category.
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