How much attic insulation is enough for best energy savings?
Adding insulation is always a good idea and there are many types available. Each is rated according to its R-value – the measure of resistance to heat flow. For Kansas City’s climate, we recommend a minimum insulation value of R-38 in the attic. To measure your current R-value, first determine the type of insulation you have. If you don’t know, take a sample to any home improvement center. Then measure the depth of existing insulation and calculate your R-value as follows: R-value/inch of existing insulation (type) x total inches (depth) = total R-value. Subtract your current R-value from R-30 to determine what you need to add. For more information on home insulation, visit our Brochure Center and request our insulation brochure.
