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Insulation Calculator

Determine insulation material needed for walls, attics, and crawl spaces. Get R-value recommendations.

Area Dimensions

m
m

Walls: R-13 to R-21, Attics: R-30 to R-60

Pro Tips from the Workshop

  • •Higher R-values provide better insulation and energy savings
  • •Attics should have highest R-value in your home (R-38 to R-60)
  • •Seal air leaks before insulating for maximum efficiency
  • •Vapor barriers go on warm side (inside in cold climates)

Ready to Calculate

Determine insulation material needed for walls, attics, and crawl spaces. Get R-value recommendations.

Insulation Calculation

Insulation needs vary by climate zone and location in home:

  1. Calculate total square footage to insulate
  2. Determine required R-value for your climate zone
  3. Choose insulation type (batts, blown, or spray foam)
  4. Calculate quantity based on coverage per package

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