raditional attic insulation functions nicely for any while but demands changing or extra insulation to be useful. Welcome in the 21st century! Green Energy of San Antonio is the exclusive seller for Green Energy Barriers in San Antonio Texas. A Green Energy Barrier is actually a space aged radiant barrier put inside your attic in place of traditional San Antonio insulation. The green energy barrier from Green Energy of San Antonio can reduce the heat with your attic by seventy%.