Why Invest in Hurricane-Strength Doors for Your Building?

April 30, 2020

Blog Posts

Rytec Spiral HZ Door

Looks and toughness don’t usually co-exist well. Tough things tend to be functional – rugged and utilitarian. They get the job done. But style is usually pushed aside in the name of efficiency and durability.


But it doesn’t have to be that way.


A case in point is the Rytec Spiral® HZ® (Hurricane Zone), the first high-speed, high-performance rigid rolling door certified for compliance with Miami-Dade County and the Florida Building Codes for hurricane-force wind protection.


It’s certified to withstand winds up to 175 miles per hour and high-speed missile impact from wind-blown debris. It can also stand up against positive and negative pressure changes that occur during strong storms.


Rytec developed this door in response to the needs of its customers in the coastal regions of the southeastern U.S., which are prone to hurricanes and tornadoes as well. During violent thunderstorms, microbursts can generate wind gusts up to 200 mph.


The Spiral HZ’s fast open and close speeds – up to 60 inches per second – help to protect buildings against wind and rain damage. They also help to minimize the potential for vehicle theft – a common problem in South Florida. In the event of power failure, the door can still be opened by actuating its mechanical brake release.


But the Spiral HZ doesn’t have an industrial, utilitarian appearance. Crisp lines give it a stylish, high-tech look. Because its anodized aluminum will not corrode, its look will last for many years – even in the worst weather conditions.


Rugged construction


The Spiral HZ is designed to withstand extreme weather conditions. Its rugged construction includes:

  • Rigid, double-walled insulated 6-inch aluminum slats,
  • An integral weather seal between the aluminum slats,
  • A heavy-duty reinforced hinge system for the door panel assembly,
  • Galvanized steel side frames and head for strength and security, and
  • Extension springs in the side columns.


A better solution to hurricane protection


Until recently, the door industry’s solution had been to combine a conventional sectional or roll-up door with a hurricane shutter. When a hurricane is approaching, the building owner can lower the shutter, providing a second layer of protection against wind and projectile damage.


However, this common approach creates its own set of potential problems, including:

  • The need to install and maintain a second door adjacent to the main door.
  • Because the hurricane shutter is rarely used, it must be tested to ensure that it's operational when a hurricane or other violent storm approaches.
  • It’s not as aesthetically pleasing as a single roll-up door.
  • The two doors are likely to have higher combined service and maintenance costs over their lifetime of service.


The Spiral HZ was tested in a state-of-the-art laboratory in south Florida and is the only door certified by Miami-Dade County (Florida NOA No. 17-1106.02, 11/8/2022. Florida Building Code: FL# FL16612).


This video shows an excerpt of a Spiral HZ door undergoing pressure and missile impact testing:


Missle Impact Testing Video



What types of buildings can benefit from a hurricane-strength door?


High-end apartments, condominiums, government buildings and auto dealerships with doors that are expected to open and close more than 60 times per day can benefit from the Spiral HZ’s simple but aesthetically pleasing anodized aluminum design.


If you need to specify a door that combines aesthetics with unmatched hurricane zone performance, the Spiral HZ high-performance rigid rolling door is the safe choice to protect your building against extreme weather conditions.


Learn more about the Spiral HZ door here.