ICF estimates that homeowners can save 10 to 45 percent on their energy bills in existing homes by air-sealing and adding insulation to ceilings, floors (and walls in limited circumstances) to levels prescribed by the 2021 International Energy Conservation Code.
Understanding insulation types
When you first start investigating your insulation options, it may be hard to tell what’s best to use where. See how the different materials stack up.
Learn the value of insulation
Watch this short video and find out why installing insulation in your home makes good sense.
Note: 89% under-insulated homes estimate derived by NAIMA based on Boston University study. “Under-insulated” here means when compared to the minimum prescriptive wall and ceiling insulation R-values found in the 2012 International Energy Conservation Code (IECC)
*Recommended Dept. of Energy attic insulation levels for commonly used fiberglass, mineral wool, and cellulose insulation assuming about R-3 per inch.
**Savings vary. Find out why in the seller’s fact sheet on R-values. Higher R-values mean greater insulating power.
***https://www.irs.gov/credits-deductions/energy-efficient-home-improvement-credit