Lou Manfredini interviewed Keally DeWitt, Vice President of Marketing and Public Policy at GAF Energy for his show “HouseSmarts” on WGN Radio. The two discussed the Timberline Solar Energy Shingle™ as the winner of the Best of IBS™ Award: Most Innovative Construction Tool at The National Association of Home Builders (NAHB) International Builders’ Show® (IBS). Topics include Timberline Solar’s installation process, financial benefits, GAF-backed warranty, aesthetics, durability, and energy production.