Benefits of Spray Foam in Hurricane-Prone Areas

To help improve building performances during hurricanes, the Florida Hurricane Advisory Committee has changed building codes to support the use of unvented attics. Why? Because during Hurricane Charlie, wind-driven rain through soffits and gable vents was the second highest cause of property damage in the area (FEMA Research Study 490).

In October 2005, the ICC adopted unvented attic assembly for the 2006 IRC building code based on the conclusion that using low air permeable insulation on the underside of a roof deck is a positive way to improve building performance.