One alternative reflective insulating measure to radiant barrier foil is the assorted types of spray coatings readily available through paint and insulation manufacturers.
What is spray-on radiant barrier?
Spray-on radiant barriers, officially called “Radiation Control Coatings” (RCC) or “Interior Radiation Control Coating Systems” (IRCCS), are paint solutions, usually of the ceramic variety with metallic flake additives. These added metallic flakes are what manufacturers claim give the coatings their radiant heat reflective properties. The material is most commonly sprayed directly onto the underside of roof sheathing (plywood) from inside the attic.
When it comes to performance, however, the edge ends there for spray-on radiant barriers offer far superior performance.
How does it stack up to radiant barrier foil?
The radiant barrier foil product line offered by Innovative Insulation, Inc. has minimum emissivity properties of .05. That means more than 95% of radiant heat is reflected. And that means, quite simply, radiant barrier foil is a far more efficient option than spray-on coatings.
