How much insulation do you need? Enter the area and your R-value target to get the thickness, bags or rolls, and material cost for common insulation types.
Each material has an R-value per inch; thickness needed = R-target ÷ R-per-inch.
Rough installed cost for your area and thickness.
Proper attic insulation can cut heating and cooling bills by up to 15%.
All calculations run locally in your browser.
Build and save smarter.