Enerflex Radiant Barrier is designed to reflect up to 96% of the solar energy that's absorbed by the roof and that heats the attic space below. Reflecting the heat cuts the load on HVAC units and ductwork. Enerflex panels can be installed in roofing rafters without tools, while Enerflex rolls can be stapled to rafters. Use of the radiant barrier qualifies for up to five LEED points, and in certain applications may qualify for state and local tax credits or utility rebates, says Enerflex's owner, Universal Forest Products. 800.598.9663. www.EnerflexFoil.com.