E3A Home Energy: Attic and Ceiling Insulation

Editor’s note
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CoverDeveloped by Montana State University Extension and the University of Wyoming
Adapted with permission

This guide is one in the Exploring Energy Efficiency and Alternatives (E3A): Energy Management for Home series. This one provides tips for insulating a home attic and ceiling for energy conservation.


  • Add insulation to an unfinished attic
  • Electrical wiring and junction boxes
  • Ensure adequate ventilation
  • Finished attic
  • Flat, vaulted or cathedral ceilings
  • Install a vapor barrier
  • Install insulation
  • Seal air leaks
  • Unfinished attic


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