A new method for air-sealing the shell
Tape is best, but the right caulk can also provide a tough, reliable seal
Use specialized tools and materials and a methodical approach.
In September 2009 I completed a deep energy retrofit on a small house in Point Reyes Station, Calif., some 50 miles north of San Francisco.
With careful air-sealing and the right insulation details, a leaky older home becomes a tight and thrifty one.
