Cyclone-rated garage door protects homes from unknown threat

Cyclone-rated garage door protects homes from unknown threat


 

New research indicates garage doors in high-wind areas are just as susceptible to being blown out from within as being blown in from outside.

Technical expert Terry Hardie of Australian garage door specialist B&D Doors & Openers said home owners in cyclone-affected regions are aware of the potential for garage door failure due to high exterior wind force, yet a garage door’s susceptibility for blow-out remains relatively unknown.
“Blow-out pressure can actually be greater than blow-in pressure – and therefore resistance to it is just as crucial,” said Mr Hardie.

“Depending on wind pressure direction and a garage door’s location on a building it can get blown out from within, exposing the garage’s contents – and potentially the greater building – to damage.
“If a garage is exposed due to door failure then internal pressures can concentrate within the garage and potentially breach the rest of the house.
“At worst, the roof can pop right off.”

B&D has now developed a specific cyclone-rated garage door that protects homes from wind speeds up to 290km/h.

The B&D Windpanel has been evaluated by the Cyclone Testing Station of James Cook University in Townsville.

The testing facility conducted field investigations following Tropical Cyclone Yasi, which unleashed maximum wind speeds of 225km/h over northern Queensland in 2011, and determined that a large number of garage doors failed during the cyclone.
Its Technical Report on Structural Damage to Buildings* found that of approximately 2000 houses inspected, 29 per cent experienced roller door damage and six per cent had sectional door damage.

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