Attic How-To Video


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Energy Efficiency Starts Up Top

The potential for energy loss through an uninsulated or underinsulated attic can make your energy bills go through the roof. Whether used as an unoccupied storage area or for additional living space, a well-insulated attic helps:

  • Save energy and money
  • Increase comfort of living space
  • Prevent condensation
  • Provide even temperature distribution throughout the home
  • Reduce the potential for mold, mildew, wood rot and associated odors

The three renovation projects that we did in the Revitalize Home:

Air Seal Gaps & Penetrations

The U.S. EPA estimates that homeowners can typically save up to 20 percent on heating and cooling costs by air sealing and insulating. RESNET claims the figure is even higher – up to 30 percent! Use insulation and sealant products listed below to seal critical areas of the attic such as:

  • Plumbing stacks and shafts
  • Attic perimeter
  • Top plates
  • Gas lines
  • HVAC penetrations
  • Electrical and cable lines
  • TV connections
  • Look for dirty insulation, which can indicate air infiltration
Air-Seal Audit Checklist

Insulate and Air Seal Can Lights

Recessed (can) lights, like those found in the Revitalize Home, are a major source of air leakage. However, they should be covered with a fire rated material and not sprayed directly with foam.

It's easy to create an insulating cover for the fixture, which can then be sprayed over for a tight seal. A simple box, like the one depicted to the right made with small pieces of THERMAX™ Sheathing held together at the seams with THERMAX™ Aluminum Foil Tape, can be placed over the fixtures in the attic to protect the insulation from the heat generated by the light. This box can then be sprayed over with FROTH™ Foam Insulation.


Project Product List



THERMAX™ Sheathing

THERMAX™ Aluminum Foil Tape

FROTH-PAK™ Foam Insulation Kit*


Air Sealing the Attic Hatch

Sealing the attic hatch is also an important step in combating energy loss in the attic. Simply cut a piece of THERMAX™ Sheathing to fit the attic hatch and adhere it to the back of the hatch. Lastly, a gasket seal with GREAT STUFF™ or GREAT STUFF PRO™ Gaps & Cracks Insulating Foam Sealant around the lip finishes the job.


More information on Attic Air Sealing is available in downloadable format.