What is the best insulation (not blown in) to use with IC-rated recessed light fixtures?
Kristen writes from Augusta, Georgia: “I have IC rated recessed fixtures in my attic. What is the best insulation (not blown in) to use on these fixtures? I will be laying the insulation on top of the fixtures.” Answer: In my opinion, the best insulation for your project is PINK unfaced Fiberglas™ batts. I say that because pink is my favorite color and because Owens Corning is the only company that markets PINK insulation products. I am recommending unfaced insulation batts because I assume there is already some insulation in place. If not, use Kraft-faced batts but remove the paper facing from the areas within a few inches of the light fixtures. IC-rated light fixtures are intended for direct contact with insulation. IC stands for Insulated Contact. An IC-rated fixture must therefore, by definition, be approved for zero clearance insulation cover by an OSHA NRTL laboratory such as Underwriters Laboratory (commonly referred to as UL).
