Impact Resistance

Over the years, strict building codes have been implemented in coastal areas to prevent excessive damage during tropical storms and hurricanes. A wide selection of Kolbe products can be upgraded to meet specific needs, including impact resistance in Zone 4 and High Velocity Hurricane Zones. 

In a hurricane or tropical storm, the most damage generally occurs when the envelope of a building is breached by wind-borne debris. This causes a pressure difference between the interior and exterior of the building, and can occur due to window and door damage. For this reason, Kolbe submits its windows and doors to independent organizations which test them to rigorous protocols requiring specific wind loads and types of flying debris.

What makes Kolbe's impact-certified windows and doors stand out from the rest? Kolbe's impact products have the same beautiful appearance for which Kolbe windows and doors are known. No unsightly brackets or visible rods are necessary to hold the sash in place, and no extra locks are needed to fasten when time to evacuate is imminent.

Kolbe's impact certified products

An overview of our impact-certified products is below. For specific product information, including configuration and maximum size tested, please search using our Performance Class & Grade page.

Ultra Series

  IMPACT RATING HVHZ LMI
Casements & Awnings    
  Crank-out awnings includes mulled units) IPD4 yes
  Crank-out casements & stationary units
(includes radius tops and rectangular mulled units)
IPD4 yes
  Push-out casements (includes radius tops) IPD4 yes
Double Hungs    
  Majesta® double hungs & single hungs IPD4  
  Sterling double hungs & stationary units IPD4 yes
  XL Sterling double hungs IPD4  
Direct Sets    
  Beveled direct sets IPD4 yes
  Ogee direct sets IPD4  
Tilt-Turns    
  Tilt-turns mulled to stationary units IPD4  
Doors & Sidelites    
  Folding doors IPD4  
  Garden-Aire sliding patio doors & stationary panels IPD4  
  Inswing French doors IPD3  
  Outswing doors, stationary panels & transoms
(includes radius tops and rectangular mulled units)
IPD4 yes
  Sidelites to match Inswing doors IPD4  
  TerraSpan® Lift & Slide doors IPD4  

Heritage Series

  IMPACT RATING HVHZ LMI
Casements & Awnings    
  Crank-out awnings IPD4  
  Crank-out casements & stationary units IPD4  
  Push-out casements (includes radius tops) IPD4  
Double Hungs    
  Majesta® double hungs & single hungs IPD4  
  Sterling double hungs IPD3  
  Stationary units to match Sterling double hungs IPD4  
Doors & Sidelites    
  Garden-Aire sliding patio doors & stationary panels IPD4  
  Inswing French doors IPD3  
  Outswing doors, stationary panels & transoms
(includes radius tops and rectangular mulled units)
IPD4 yes
  Sidelites to match inswing doors IPD4  

NOTES:
IPD3 = Impact Performance, 9# Missile D, Wind Zone 3 or less
IPD4 = Impact Performance, 9# Missile D, Wind Zone 4 or less
HVHZ LMI = High Velocity Hurricane Zone Large Missile Impact

Kolbe has numerous products that are impact certified; for specific information on the products that meet requirements, please contact your local distributor.

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