Wall Sleuth: Determining Insulation R-Value

You can upgrade insulation without gutting your walls, but not until you know what’s in there nowby Justin Fink

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

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

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

by Rick Nelson