Insulation

by Martin Holladay

What we learned from updating a 16-year-old deep-energy retrofit by Joseph Lstiburek

by John Rankin

Ice dams are a sign of an inefficient house by Martin Holladay

21st-century technology and a classic look come together in a shingle-style house that produces more energy than it consumes by Bill Heigis, Hobie Guion

Getting ready for a foam-insulation crew means doing a lot more than you’d think by Michael Chandler

CertainTeed's DryRight insulation features R-values ranging from R-13 to R-19 and keeps wall cavities dry and mold-free by Justin Fink

Seal air leaks first; then add extra insulation for an energy-saving improvement with great bang for the buck by Mike Guertin

Less dusty than cellulose, blown-in fiberglass increases R-value and installs quickly by Mike Guertin

Blower-door tests improve efficiency and lower energy costs by finding where heated air escapes by John Jennings

Infrared cameras are great investigative tools, but so are coat hangers by John Jennings

Common-sense solutions for creating homes that are self-reliant, resilient, and versatile by David Johnston, Scott Gibson

by Rachel Wagner

Can a 150-year-old house approach net-zero energy use? Three case studies point the way from the 19th to the 21st century. by Betsy Pettit