An Insulation Overview

Green Building Advisor

Are you overwhelmed by the different options when it comes to insulating your home? You probably understand what an R-value is and that the attic is probably the first place to begin. But when it comes to type of insulation and proper installation, are you as well informed? See a great resource after the jump.

Green Building Adviser is a great resource for all your green building information needs. They've put together a good overview on how insulation works, the differences between the different types of insulation and other steps you need to take to ensure that your insulation preforms its best.

Beyond insulation, the overview provides information about air flow and moisture, both concerns to insulation performance. Traditional insulation, including fiberglass, is not designed to stop air or moisture from moving in between a conditioned space and the outside of your home.

For stopping water vapor, here's Green Building Adviser's insulation recommendations, rated from Best to Worst:

  • Foil-faced polyisocyanurate
  • Closed-cell spray polyurethane foam
  • XPS
  • EPS
  • Open-cell spray polyurethane foam
  • Cellulose
  • Blown-in fiberglass
  • Fiberglass batts

Best to Worst at stopping airflow:

  • All types of spray polyurethane foam
  • All types of rigid foam
  • Cellulose
  • Blown-in fiberglass
  • Fiberglass batts

Photo Credit: 1st Photo via TalkingtoJoey's Flickr Stream; 2nd photo via Anastaz1a's Flickr stream.