Which statement about roof sprinklers is true?

Which statement about roof sprinklers is true?

• A. Roof sprinklers are never required.
• B. Roof sprinklers are required if a roof or deck is present.
• C. Roof sprinklers are required only if the deck is above grade.
• D. Roof sprinklers are required only for wooden roofs.

Answer: (B)

Roof areas can fuel a fire and act as a pathway into living spaces, especially when attic spaces or decks connect to the interior. In NFPA 13R for low‑rise residences, requiring roof sprinklers whenever a roof or deck exists adds a critical layer of protection to slow fire growth and help keep flames from spreading into living areas. This protection helps control fires that start on the roof or in the attic, and it reduces the chance that embers or heat will penetrate through penetrations, vents, or ceiling assemblies into occupied spaces. The other ideas don’t fit because the requirement isn’t “never” and isn’t limited to decks above grade or wooden roofs. Roof sprinklers are needed whenever a roof or deck is present, regardless of deck height or roof material, to mitigate fire spread.

Roof areas can fuel a fire and act as a pathway into living spaces, especially when attic spaces or decks connect to the interior. In NFPA 13R for low‑rise residences, requiring roof sprinklers whenever a roof or deck exists adds a critical layer of protection to slow fire growth and help keep flames from spreading into living areas. This protection helps control fires that start on the roof or in the attic, and it reduces the chance that embers or heat will penetrate through penetrations, vents, or ceiling assemblies into occupied spaces.

The other ideas don’t fit because the requirement isn’t “never” and isn’t limited to decks above grade or wooden roofs. Roof sprinklers are needed whenever a roof or deck is present, regardless of deck height or roof material, to mitigate fire spread.