I was in the rec center pool on a snowy May afternoon recently talking to my friend Dave as my kids sloshed around in what struck me as a massive inoculation tank. As usual, nerds that we are, we talked about energy efficiency in our houses. Dave recently had an energy an audit, and like me, he's got a roof made out of two-by-fours, an insulation rating of R-12. Code here for roofs is R-37, and best practice is R-49. The auditor told him: the best thing to do would be to insulate between the interior beams, and then plywood …
Get Grist in Your Inbox
Auden Schendler is vice president of sustainability at Aspen Skiing Company, author of Getting Green Done, and a board member of Protect Our Winters.