First, the high-temperature limit switch on a Cadet baseboard heater in a neighboring apartment failed and caused the heater to overheat. This high heat ignited a nearby tablecloth.
Second, the smoke alarms were not working in the origin apartment. The shrieks of a pet parrot awoke the tenant in this unit who left her apartment in a rush without closing her door.
Third, there was not automatic door closure device from the apartment door to the fire egress hallway. The fire spread quickly to the hallway and trapped Ms. Mercier.
Fourth, the fire-rated door on Ms. Mercier’s apartment was installed without fire sealant around the frame. The fire burned through the casing in less than 5 minutes and spread into Ms. Mercier’s apartment.