Insulation regulations and requirements vary depending on where you live. Here’s an overview of some of the local and national regulations related to insulation, as well as incentives and rebates available for energy-efficient upgrades:

1. Building codes: Building codes typically include requirements for insulation levels in residential and commercial buildings. These codes are set by local and state governments and are designed to ensure that buildings are energy-efficient and safe. Check with your local building department to find out what the insulation requirements are in your area.
2. Energy codes: Energy codes are similar to building codes but focus specifically on energy efficiency. These codes set standards for insulation levels, air sealing, and other energy-efficient features. Many states and local governments have adopted the International Energy Conservation Code (IECC) as their energy code.
3. Rebates and incentives: Many utility companies and government agencies offer rebates and incentives for energy-efficient upgrades, including insulation. These programs can help offset the cost of insulation upgrades and make them more affordable. Check with your local utility company or state energy office to see what programs are available in your area.
4. Tax credits: The federal government offers tax credits for energy-efficient upgrades, including insulation. The Nonbusiness Energy Property Tax Credit provides a credit of up to 10% of the cost of eligible insulation upgrades, up to a maximum of $500. The credit is available through December 31, 2023.
5. Environmental regulations: Some local and state governments have regulations related to environmental concerns, such as air quality and climate change. These regulations may require specific types of insulation or insulation materials to be used in certain situations.
   
   

By understanding the regulations and incentives related to insulation and energy efficiency, you can make informed decisions about your insulation upgrades and ensure that they are compliant with local and national regulations.
Consider working with a professional insulation contractors’ team who is familiar with these regulations to ensure that your insulation upgrades meet all requirements.