Hemp Batt Insulation Calculator

Hemp batt insulation fits vapor-open natural building goals, with performance similar to many other fiber batts. Use this as early material planning only; confirm actual product datasheets and local assembly requirements.

Default material estimate

  • R-value per inch: R-3.7
  • Required thickness for R-20: 5.4 inches
  • Order area with 10% waste: 550 sq ft
  • Estimated material cost: $1,425

Material snapshot

  • Category: Batt
  • Form: Plant-fiber batts
  • Typical use: Wood-framed wall and roof cavities in vapor-open assemblies.

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