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.