David Johnston is president of David Johnston & Co. He has been building custom energy efficient, healthy homes in Maine for more than 35 years. He was building energy efficient homes with a focus on indoor air quality long before it was a mainstream thing to do. In addition to being a builder he teaches building construction trade classes at Central Maine Community College and has served as an adjunct instructor in Residential Design and Drafting and Graphic Design at the University of Southern Maine (USM). David is also currently on Advisory Committees for Southern Maine Community College, Central Maine Community College, and Westbrook Region Technology Center.

We want to discuss how a successful builder balances the sometimes competing demands of good IAQ and energy efficiency. We also want to talk about Mr. Johnston's presentation on the Basics of Building Science at the 2016 Northeast IAQ and Energy Conference April 11-12 in Portland Maine. Radio Joe and Bob Krell from Healthy Indoors Magazine will be there doing interviews and taping a special IAQ Radio broadcast. LEARN MORE this week on IAQ Radio!