Tips on How to Insulate your Attic

Efficiency Vermont experts are here to help, with professional tips on air sealing and insulating your attic. Learn where to find air leaks and how to seal them. Then we’ll look at various types of insulation, and how best to use them to combat the stack effect.

Most homes in Vermont can save an average of $375 a year by properly air sealing and adding insulation. You’ll also stay more comfortable, year-round, by reducing drafts and air quality issues.

  • 00:27: Safety information
  • 00:57: First things first – Air sealing
  • 01:21: Insulating the attic hatch
  • 01:42: Identifying your level of insulation
  • 02:09: Recessed Can Lighting and Chimneys
  • 02:25: Blowing in or laying down insulation


Materials checklist:

  • Silicone, acrylic latex caulk and/or low expanding foam for air sealing
  • High-temperature (heat-resistant) caulk for sealing around flues and chimneys
  • Foam board insulation to cover soffits, open walls, and larger holes. Alternatively, you can use drywall or pieces of plywood.
  • Roll of 14” aluminum flashing to keep insulation away from the flue pipe
  • Weather-stripping for attic hatch

Stuck, and not sure what to do next? Contact our help line for trouble-shooting support at 888-921-5990.

While some air sealing work can be done on your own, we recommend working with a Building Performance Institute (BPI) contractor to air seal your entire home and reduce your bills as much as possible. They can also account for air quality and address other safety concerns.

Find a qualified contractor near you 

For more information:

  1. A printable how to guide
  2. ENERGY STAR® Do-It-Yourself Guide