Hurricane Window Cyclic Wind Pressure Testing

This is where most products fail.

Once a 2x4 missile hits the glass, the test isn’t over. The real challenge begins: 170 mph winds push and pull on the opening with 50–70 PSF of pressure—3,500 times. The glass must stay in the sash. The sash must stay in the frame. And the frame must stay in the wall.

Only use products that have been independently tested and approved for the High Velocity Hurricane Zone (HVHZ) by the Florida Building Department (FPA) or with a Miami-Dade Notice of Acceptance (NOA).

Key components matter:

• Structural glazing silicone

• Multipoint locks

• Deep anchoring with correct embedment, shim spacing, and edge distance—especially in concrete

The surrounding structure must also meet the test standard. If it doesn't, the approval is meaningless.

I help architects, builders, and owners select, specify, and detail hurricane glazing systems—without dealer or manufacturer bias. That includes classes, product evaluations, installation planning, and interpretation of testing protocols and approvals.