Home & Construction Calculators

Insulation Calculator

Estimate insulation material quantity and coverage from area, target R-value, and product coverage assumptions.

Insulation Calculator — Online Calculator

1. Attic Dimensions

2. R-Value & Material

Thickness to Add

5.9 in

To bridge an R-19 gap (from R-19 to target R-38)

Target R-Value

R-38

R-Value Deficit

R-19

Packs / Bags

28 packs

Estimated Cost

$1500.00

Status: Upgrade Recommended. To bring your attic up from R-19 to R-38, install an additional 5.9 inches (28 packs/bags) across 1000 sq ft.
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The Insulation Calculator estimates insulation material from area, target R-value, and product coverage assumptions.

Questions

What is R-value?

R-value describes resistance to heat flow. Required values vary by climate, building code, assembly, and insulation product.

Does this calculate energy savings?

No. It estimates material quantity. Energy savings require a building model and local climate data.

Should I install the target value myself?

Check local code, moisture control, ventilation, fire safety, and manufacturer instructions first.

Limitations

This planning estimate does not account for thermal bridging, air leakage, existing insulation, irregular spaces, or code compliance.

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