NORTHAMPTON â€” State fire investigators have determined a small fire Tuesday morning at a building under construction at the corner of Prospect and Jackson streets was accidental, caused by spontaneous combustion of leftover foam insulation on the second floor.
â€œThe fire started in a room where they were spraying chemical foam insulation,â€ said Jennifer Mieth, a spokeswoman for the state fire marshalâ€™s office.
â€œThere was a pile of insulation left on the floor that spontaneously combusted,â€ she said.
The fire at the former Calvin ice cream factory building at 285 Prospect Street was called in around 6 a.m. It took 16 city firefighters and about 25 minutes to quell it, according to city Fire Chief Brian Duggan.
â€œThe fire was easily contained,â€ he said in an interview Tuesday morning. Two engines and one ladder truck were at the scene.
No other fire departments were called to assist, Duggan said. â€œIt was all Northampton apparatus because it wasnâ€™t all that significant,â€ he said.
Duggan estimated the fire caused less than $3,000 in damage.
According to Duggan, no one was in the building at the time, a fact that was also confirmed by the state fire marshallâ€™s office.