Tips On How To Air Seal Your Home

Efficiency Vermont experts are here to help, with professional tips on how to seal common problem areas like windows, outlets, and doors. 

Finding and sealing air leaks is an easy, low-cost way to make your home more comfortable and save on heating and cooling costs.

  • 00:23: Air sealing doors 
  • 00:54: Adding a door sweep
  • 01:17: Applying weather stripping to exterior doors
  • 01:46: Air sealing walls
  • 01:57: Air sealing switches and outlets
  • 02:37: Air sealing windows
  • 03:03: Find a certified contractor 

Materials checklist

  • Incense (to help identify air leaks)
  • Silicone, acrylic latex caulk and/or low expanding foam for air sealing
  • Cans of expanding spray foam insulation

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