Bill > HB3314

This bill adds a new section to the Texas Health and Safety Code that establishes specific energy efficiency performance standards for residential building attic and rafter assemblies. The bill requires local jurisdictions to consider an unvented attic or rafter assembly compliant with energy code requirements if certain conditions are met, including insulating and air sealing the assembly to a specific R-value (thermal resistance) depending on the climate zone (R-20 for zones 2-3, and R-26 for zone 4), achieving a blower door test result of less than 3.0 air changes per hour (ACH50), using a mechanical ventilation system that doesn't rely solely on negative pressure, potentially wrapping roof rafters with additional insulation, and containing all heating, cooling, and ventilation equipment within the building's thermal envelope. These standards provide a clear path for builders to meet energy efficiency requirements, with the new provisions set to take effect on September 1, 2025, potentially improving residential building energy performance across specified climate zones in Texas.

Government Affairs

https://capitol.texas.gov/BillLookup/History.aspx?LegSess=89R&Bill=HB3314