A building product warehouse full of flammable material went up in flames and partially collapsed Monday.

Fire officials said the Applied Building Product Warehouse blaze started in the early afternoon and was exacerbated by intensely hot weather conditions. They say the heat may have contributed to the collapse of the front of the warehouse. The warehouse held material like building insulation, roofing and window trim, some of which police said could be hazardous. Residents who live south of the fire were encouraged to evacuate or to stay inside with all windows and doors shut.

Because of the stifling heat, firefighters say they rotated shifts as they worked to prevent exhaustion. One firefighter did suffer heat exhaustion but was treated at the scene. The fire is under investigation.