How close can a smoke alarm be to the corner of the wall and ceiling?

Smoke alarms or smoke detectors mounted on walls shall be located not farther than 12 inches from the adjoining ceiling surface. (2016 NFPA 72 - 29.8.3.3)

NFPA 72 Smoke Alarm Wall Location

Show All Answers

1. How often do smoke alarms, smoke detectors, carbon monoxide alarms, and combination alarms have to be replaced?
2. What are the required UL listings for smoke and carbon monoxide alarms?
3. On what levels of a dwelling are alarms to be installed?
4. Where are alarms to be installed near bedrooms?
5. Are the alarms to be interconnected?
6. Are carbon monoxide alarms to be interconnected?
7. What type of power source is required for a smoke alarm in a one and two family dwelling?
8. What type of power source is required for a smoke alarm in a three family dwelling?
9. What type of power source is required for a smoke alarm in a four or more unit dwelling?
10. What type of power source is required for carbon monoxide alarms?
11. What type of smoke alarm or carbon monoxide alarm is required for deaf or hearing impaired occupants?
12. How close can a smoke alarm be to the corner of the wall and ceiling?
13. Where can a smoke alarm be installed on a wall?
14. Where is a smoke alarm to be installed when you have a peak ceiling?
15. Where is a smoke alarm to be installed on a sloped ceiling?
16. Where is a smoke alarm to be installed on a tray-shaped ceiling?
17. Are smoke alarms allowed to be installed near cooking appliances?
18. Can smoke alarms be installed near bathrooms?
19. Can smoke alarms be installed near ceiling fans?