FAQ: Will adding a radiant barrier to my attic space make my roof hotter or harm my shingles?
ANSWER: A radiant barrier will increase the surface temperature of your roof between 2 to 5° F on a hot sunny day but it’s already between 160 to 190 degrees at that time so the difference is very negligible and shouldn’t adversely affect your shingles (per a 2002 study performed by the Florida Solar Energy Center).
Because a radiant barrier reflects radiant heat back toward the roof decking, this is a very common question. As a result of the rise in use of radiant barriers, and an increase in this concern, a study performed by the Florida Solar Energy Center was conducted on radiant barriers and roofing materials in 2002. This study found that the installation of a radiant barrier in an attic space will not reduce the life expectancy of a shingle nor void the shingle manufacturer’s warranty. However, a consumer is advised to review their shingle warranty to ensure that the addition of a radiant barrier will not void it.
As a result of this increased concern, several roofing material manufacturers have issued statements indicating that the use of a radiant barrier will not negate their existing shingle warranties. Those include:
- Elk, GAF, Celotex Corporation, IKO Industries Ltd, Vande Hey Raleigh, US Intec, Owens Corning, Certain Teed Corporation, Crane Plastics, Atlas International Inc, and Louisiana Pacific Inc to name a few.
More detail is supplied in this technical bulletin offered by the Reflective Insulation Manufacturers Association (RIMA-I) of which RadiantGUARD is a proud member.
For more information about radiant barrier and reflective insulation products and to purchase online, please visit RadiantGUARD.com.
© 2010 Radiant Barrier Journal | RadiantGUARD.com
