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Determine your current level of insulation
Proceed with caution when measuring insulation in your attic. Make sure you do not step off of the joists and through the drywall below.
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How Can I Tell How Much Insulation I Already Have?
If your home was built before energy costs started to escalate, its insulation levels may now be far below today's recommendations for energy savings and comfort.
Recommended Levels of Insulation
As a way to help maximize the energy efficiency of both new and existing homes, NAIMA has prepared a map showing thermal recommendations based on both the U.S. Department of Energy’s recommendations and the most recent minimum International Energy Conservation Code levels. Click here for R-value recommendations for optimal energy savings and comfort.
Attics
 Use a ruler to measure the amount of insulation currently installed. If you have six inches or less, you probably need more. Consult the CABO/MEC guidelines on using attic cards and rulers. Proceed with caution when measuring insulation in your attic.
Walls and Floors (adjacent to an unheated space like a garage or basement)
In these places, the structural frame elements (the ceiling joists or wall framing boards) are often exposed, making it easy to examine the insulation (if any) and to measure the depth or thickness of the insulation.
Exterior Walls
It is more difficult to inspect finished exterior walls. One method is to remove the cover plate for an electrical outlet and examine the area outside the outlet box. You should be able to see whether or not insulation is in the wall. Use caution.
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