Radiosity 3000 Paint Additive Providing Radiant Barrier to Any Paintable Surface Exterior & Interior / Save Money and Energy Summer and Winter for Homes / Pets / Eco / Voc Free Eco Friendly - Zero VOC's paint additive that provides a Radiant Barrier to any paintable surface. Radiosity 3000 is a radiant barrier paint additive mixed with YOUR paint. Radiosity Radiant Barriers can be installed on ANY paintable surface! Save money on your energy bills.