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What is the Required Insulation R-value for Indiana?

nsulation R-value for Indiana

Buildings in Indiana normally follow R-value requirements according to the 2021 International Energy Conservation Code. These are often referred to as I-codes, and they vary depending on the environmental zone in which you live, as well as the specific area of a building. Specific insulation R-value for Indiana is mostly dictated by these guidelines.

The U.S. Department of Energy (DOE) provides guidelines for recommended insulation levels based on climate zones. Indiana falls within Climate Zone 5 according to the DOE's climate zone map. The recommended R-values for different parts of a typical residential building in Climate Zone 5 are as follows:

  • Ceiling: R-49 to R-60

  • Walls: R-13 to R-21

  • Floors: R-25 to R-30

  • Basement Walls: R-11 to R-15

Regulations for insulation R-values are implemented to promote energy efficiency, comfort, durability, and safety in buildings. By setting minimum R-value requirements, these regulations aim to reduce energy consumption for heating and cooling, leading to lower energy bills and decreased environmental impact. Adequate insulation helps maintain consistent indoor temperatures, improving occupant comfort year-round.

Additionally, insulation plays a role in protecting buildings from moisture-related issues and fire hazards, while also ensuring indoor air quality standards are met. Compliance with insulation regulations is typically required for obtaining building permits and ensuring buildings meet minimum performance standards, contributing to the sustainability and resilience of the built environment.

M.Y. Insulation Indiana & Michigan


If you're aiming for energy efficiency beyond the minimum local code requirements, you may consider higher R-values for insulation to improve the overall performance of your building envelope and reduce energy consumption. This will further restrict the movement of heat between layers, keeping your home or building cool when you want it that way, and warm when you don’t. Not only will you be able to more effectively climate control your space, you’ll see lower heating and cooling bills.


If this seems a bit complicated, don’t worry about it! Our team knows exactly what local codes require of insulation, and we work with insulation products that have a pre-calculated R-value. Leave the hard work to us!

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