AskTOH: Ice Dams, City Trees
Tom Silva explains to a homeowner how ice dams form and how to prevent them. He then works with an insulation contractor to apply closed-cell spray foam insulation in an attic. Then Tom, along with Kevin O'Connor, Roger Cook, and Richard Trethewey ask "What Is It?" Afterward, Richard shares a tip...
Air date: 12/29/2011