Added requirements for chimney inspections
Summary of Technical Changes table identifying where and why code changes occurred between the 2020 and 2023 editions
Guide for Fire and Explosion Investigations 2024 edition provides the scientific framework for conducting fire and explosion investigations — from establishing origin and cause through documenting findings for legal proceedings
Clarification resolving conflicts between industry standards and the code for fire extinguisher selection
Clarification on smoke detector spacing
2025 NFPA 13D Standard for the Installation of Sprinkler Systems in One- and Two-Family Dwellings and Manufactured Homes NFPA 306 Added requirements for chimney inspectionsNFPA 13D, Standard for the Installation of Sprinkler Systems in One and Two Family Dwellings and Manufactured Homes 2025 edition establishes mandatory requirements for the design, installation, and testing of fire sprinkler systems in one and two family dwellings, manufactured homes, and townhouses. Coverage addresses sprinkler system design criteria, water supplies, equipment specifications, and sprinkler placement with provisions tailored to allow