Deane Evans (from the Partnership to Advance Technology in Homes) and Ren Anderson (from the National Renewable Energy Lab) talk with Bob about special photovoltaic shingles. And Bob visits the home of Global Solar in Tuscon, AZ to learn more about how photo voltaic film is manufactured.

Episode 5 of 13
Bob introduces the latest in sustainable materials and efficient building techniques on a Habitat for Humanity build.