Attic Insulation Calculator
Calculate how much attic insulation you need for your home with our comprehensive calculator. Determine insulation materials, costs, and labor estimates based on your project specifications.
Step 1: Project Measurements
Recommended R-Values
For most attics, the U.S. Department of Energy recommends R-30 to R-60 insulation depending on your climate zone. R-38 is the standard recommendation for many regions.
Step 2: Material & Cost
About Insulation Types
Blown-in cellulose is the most common and cost-effective. Spray foam provides the highest R-value per inch but is more expensive. Fiberglass batts are easy to DIY install.
Project Cost Results
Estimated Total Project Cost
Insulation Type Cost Comparison
| Insulation Type | Price per Sq Ft | Material Cost | Total Project Cost |
|---|
Cost Breakdown
Insulation Calculation Formula
Total Cost = (Attic Area × Material Price) + (Attic Area × Installation Cost)
Note: R-value doesn’t affect the amount of material needed, only the thickness/density. Most insulation materials are sold by coverage area rather than R-value.
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