Too Little Insulation

Many older homes will not have as much insulation as is currently recommended. You’ll need to know the recommendations for new construction in your area as a benchmark. Your local contractor can help with this. In some areas, the recommended insulation levels are higher if you have electric heat. If this is the case, you should be aware of these requirements and the heating type before you evaluate the insulation.
The obvious implication of inadequate insulation is heat loss. In areas where snow accumulation and ice dams are an issue, low attic insulation levels promote ice dams.
To determine the R-value of the attic insulation, you’ll need to identify the insulation material and check its R-value per inch. You’ll then need to measure the average depth of insulation in the attic. For example, if there are four inches of mineral wool insulation the R-value will be 13. If the recommended attic insulation level is R-25, we have only roughly half the insulation level that would be ideal.

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