When for any reason, ceiling setup isn't functional and wall-mounted installations are allowed, it is possible to install smoke alarms on the wall using its top border at a minimum of 4" (10cm) and a max of 12" (30.5cm) below the ceiling.
Before the smoke alarm installation on the ceiling or wall, then think about checking the home insulation. Older homes may be overlooking a ceiling (if available to the loft) or outside wall insulation.
This could allow extreme cold or heat transfer from outside into the home, making a thermal barrier, also protect against smoke from reaching /triggering the alert. If that is true (you can merely touch the ceiling or wall during very cold or hot days), mount a smoke detector in the interior wall of the home.
Some major requirements are given below:
- The wall may be coming down from the ceiling (at 24") or upward from the ground.
- DO NOT install smoke detectors in subsequent regions to lessen the possibility of false alerts.
- Places where combustion particles exist (Combustion Particles – the by-products of draining procedure).
- Check for badly ventilated kitchens.
- Check for high airflow. High airflow may blow smoke or change it away in the sensor preventing it from reacting correctly or in any way.