NFPA 13R, Standard for the Installation of Sprinkler Systems in Low-Rise Residential Occupancies 2025

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NFPA 13R is a residential sprinkler design standard focused on low-rise residential occupancies. The Standard’s intent is to provide a sprinkler system that aids in the control of residential fires and provides improved protection against injury and life loss in multi-family dwellings.

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The 2025 edition features several significant revisions, including:

  • Revised conversion factors in Chapter 1
  • New definition for “ceiling pocket”
  • Revised clarification that “common spaces” such as lounges, group cooking facilities, and group bathrooms are to be considered part of a dwelling unit
  • Differentiation between LED-style lights and other lights as a heat source
  • New guidance on installing sidewall sprinklers beneath a sloped ceiling
  • Clarification in Chapter 8 that an “inside hose demand” is not required for NFPA 13R systems

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NFPA is the leading information and knowledge resource on fire, electrical, and related hazards.