Determining R-Value
.jpg)
The "R" stands for resistance to heat flow. So, the higher the
R-value, the greater the insulating properties of the
insulation.
You’ll find the R-value of your insulation printed on the
package or bag it comes in. R-values are also printed on the
facings of fiber glass batts and rolls.
Think before you insulate. .jpg)
Determine the R-value recommended for your area before you
insulate. You can find the R-value recommendation for new
construction houses from the U.S. Department of Energy by using the
map below. Or call your local building department or local utility
service for their recommendation.
Fiber glass residential building insulation products come in
R-values ranging from R-8 to R-38 for fiber glass batts and rolls.
Fiber glass blowing insulation can also be blown in an attic to
nearly any R-value.
R-VALUE CHART WITH SPECIFIC REGIONS
OF THE COUNTRY
