A fire broke out on the seventh floor of a Toronto high-rise on Tuesday during repair work at the building [4].

The incident reignites safety concerns for residents of 11 Thorncliffe Park Drive, a complex where a previous blaze in 2025 displaced hundreds of people [3].

Toronto Fire Department crews reported the fire around 11:30 a.m. on May 5 [5]. The blaze triggered a third-alarm response as firefighters worked to contain the flames [1]. The fire was sparked when sparks from a saw ignited insulation while crews were removing flammable material left over from the 2025 fire, reports said [2].

Despite the scale of the response, officials said that no mass evacuation was ordered for the building's residents during this incident [2]. Firefighters focused their efforts on the seventh floor to prevent the fire from spreading further through the structure [4].

The building had been undergoing extensive work to recover from the prior year's disaster. That previous fire burned for weeks, causing significant structural damage, and forcing a large-scale relocation of the community [3].

Emergency crews remained on the scene throughout Tuesday to ensure the fire was fully extinguished and that no hot spots remained in the insulation or debris. The cause of the ignition has been linked directly to the tools used by the repair teams [2].

“A third-alarm response was triggered after sparks from a saw ignited insulation.”

This incident highlights the volatile nature of post-disaster reconstruction in high-density residential buildings. Because the 2026 fire was caused by the very process of removing flammable debris from the 2025 blaze, it underscores the critical need for stringent fire-watch protocols during remediation work in aging high-rises.