Understanding Storm Rated Garage Doors

Amarr WindPro™ Storm Rated Garage Doors

The Amarr WindPro rating system was developed to simplify and reduce the confusion associated with selecting the appropriate wind load approved garage door. The higher the “WP” rating, the higher the rating of the door. Amarr WindPro wind load approved garage doors are engineered to meet specific wind load ratings, but look identical to non-wind load garage doors, so you don’t have to compromise style for functionality. Almost every Amarr garage door is available with a WindPro wind load reinforcement system.

  NON-IMPACT IMPACT
  WP1WP2WP3WP4WP5WP6WP7WP8 WP5iWP6iWP7iWP8iWP9iWP10i
 ASCE 7-05Wind Speeds
(mph)
90-99100-109110-119120-129130-139140-149150-159160-169 130-139140-149150-159160-169170-179180+
 ASCE 7-10 / ASCE 7-16Wind Speeds
(mph)
110-124125-139140-149150-164165-175176-189190-204205-219 165-175176-189190-204205-219220-229230+
 Exposure B with mean roof height <30'

 

Why Storm Rated Doors Are Needed

Although the strength of garage doors is a significant concern in high-wind conditions, many people simply are not aware of the need for reinforced garage doors. These garage doors are often referred to as Wind Load rated, Storm/Hurricane rated or simply Wind rated. As the homeowner, you, with the assistance of your builder and garage door dealer, are responsible for choosing the appropriate wind load product to meet or exceed your local building code.

In recent years, a number of hurricanes have made landfall in the US and caused millions of dollars in damage from high winds. As a result, local building officials, townships, counties and states have adopted and are enforcing more stringent building codes directed at strengthening the foundations, structures and components that are associated with building construction.

Hurricane Facts: 

  • About 90% of residential wind damage starts with wind entry through the garage door.1
  • Less than 30% of homes in hurricane prone areas have adequate garage door wind load reinforcement systems.2
  • Fewer than 50% of consumers in hurricane prone areas know that their garage doors are required to meet building code criteria for wind pressures.2
  • Winds can stay above hurricane strength many miles inland. Hurricane Hugo (1989) battered Charlotte, North Carolina - about 175 miles inland - with gusts to nearly 100 mph.3
Hurricane

 

"Wind pressure is often the most devastating culprit in a hurricane. A category 3 hurricane with winds of 130 mph exerts wind pressures equivalent to the weight of a typical family car on a two-car garage door."

 

- Dr. Steve Lyons, Hurricane Expert, The Weather Channel

 

 

1Copyright 2021, Federal Alliance for Safe Homes
2August 2006, Electronic Answers, Amarr Garage Door Hurricane Preparedness Study
3Revised August 2001, Hurricanes, Unleashing Nature’s Fury: A Preparedness Guide, U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Weather Service