Insulation Calculator
Calculate the insulation materials needed and estimate energy savings for your home. Perfect for attics, walls, floors, and basements!
Project Details
Recommended: R-38
Zone 4 (Mixed)
Recommended R-Value for attic: R-38
💡 Tip: Climate zones are based on IECC (International Energy Conservation Code). Higher zones (colder climates) require higher R-values for better insulation.
R-Value Requirements
Enter 0 if uninsulated
Recommended for attic: R-49
Energy Cost Information
💡 Enter your utility costs for more accurate savings estimates. Default values are US averages.
Average winter heating bill
Average summer cooling bill
Months you use heating
Months you use air conditioning
📦
Fiberglass Batts
Traditional roll insulation
R-3.2 per inch
💨
Blown Cellulose
Loose-fill insulation
R-3.7 per inch
🔫
Spray Foam
High R-value, air sealing
R-6.5 per inch
🧱
Rigid Foam Boards
Solid foam panels
R-5 per inch
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