What's the best way to seal a 30-year-old AC duct system in an attic?

— Glenn Summers Melbourne, FL

Answered by Andrea Foss on March 23, 2010

Adding attic insulation

— Matthew Tannehill

Answered by Andrea Foss on January 21, 2010

Should attic insulation extend into the eave soffits?

— Ralph Fumante Jr., Oyster Bay Cove, NY

Answered by Jesse Terzi on April 23, 2009