Insulation Calculator

Calculate insulation needs for walls, attics, and basements to improve energy efficiency

Area & Project Details

Current insulation R-value (0 if none)

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Insulation Requirements

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Recommended R-Values by Climate Zone

Insulation Types & R-Values

🧶 Fiberglass Batts
$0.64-1.19/sq ft
R-Value: 3.2-3.8 per inch
Best for: Standard wall cavities
Installation: DIY friendly
💨 Blown Fiberglass
$1.65-2.00/sq ft
R-Value: 2.2-2.7 per inch
Best for: Attics, irregular spaces
Installation: Professional
📰 Cellulose
$1.20-2.80/sq ft
R-Value: 3.1-3.8 per inch
Best for: Eco-friendly option
Installation: Professional blown
🫧 Spray Foam
$3.00-7.00/sq ft
R-Value: 3.5-6.5 per inch
Best for: Air sealing + insulation
Installation: Professional only
📋 Rigid Foam
$1.00-1.50/sq ft
R-Value: 3.8-8.0 per inch
Best for: Continuous insulation
Installation: Moderate DIY
🪨 Mineral Wool
$1.40-2.10/sq ft
R-Value: 3.0-3.3 per inch
Best for: Fire resistance
Installation: DIY friendly

Insulation Installation Tips

🎯 Proper R-Value

Choose R-value based on climate zone and location. More insulation isn't always better - follow recommendations.

🔒 Air Sealing First

Seal air leaks before adding insulation. Air sealing can be more important than adding more insulation.

🧤 Safety Equipment

Wear protective gear: gloves, masks, long sleeves. Fiberglass particles can irritate skin and lungs.

💨 Ventilation

Maintain proper ventilation in attics and crawl spaces. Don't block soffit or ridge vents with insulation.

📏 No Compression

Don't compress insulation - it reduces R-value significantly. Cut batts to fit properly, don't stuff them in.

🔌 Electrical Safety

Turn off power when working near electrical. Use unfaced insulation around recessed lights and electrical.