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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.

Водич корак по корак

1. 1Input base values
2. 2System computes results

Worked Examples

Common Mistakes to Avoid

• ✕Precision loss
• ✕Ignoring variables

Frequently Asked Questions