How to Calculate Attic Insulation
What is Attic Insulation?
An attic insulation calculator determines the thickness and R-value of insulation needed to meet energy code requirements for a specific climate zone. The US Department of Energy recommends R-38 to R-60 for attics in most climates. A 1,000 sq ft attic needing R-49 requires about 17 inches of blown fiberglass.
Step-by-Step Guide
- 1Input base values
- 2System computes results
Worked Examples
Input
Enter the required values
Result
Result computed by the formula
Common Mistakes to Avoid
- ✕Precision loss
- ✕Ignoring variables
Frequently Asked Questions
What does this calculator do?
Input base values
How do I use this calculator?
System computes results
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