Radiant heat transfer into and out of roofs and attics is a leading cause of costly heat gain and loss. A low-e latex paint, Radiance Low-e Attic and Decking Barrier from ChemRex Inc., can help to combat this problem. Radiance is sprayed, rolled or brushed on to the underside of a roof like ordinary latex paint. The paint's technology works to reduce the loss of radiant heat in winter and helps block emission of heat into the structure in the summer, helping to lower heating/cooling bills year round.