“Few people have been as involved and influential in improving the understanding and marketability of energy-efficient windows as Kerry Haglund, LEED AP BD+C. She is the executive director of the Efficient Windows Collaborative and serves as a member of the National Fenestration Rating Council’s board of directors. This month’s blog is devoted to interviewing Haglund about some of the important changes underway in our industry and what will shape the horizon of high-performance glazing products.”—Mark Silverberg