Crews were called to a fire at the Olympic Fiberglass factory in Rochester Wednesday afternoon.
The factory is in the 1200 block of East 4th Street. Employees were mixing some materials together when a pump failed, spraying flammable material onto the wall.
Firefighters say the fire spread to an attic space of the building.
An excavator was called in since sheeting and rafters were starting to cave in.
No injuries were reported.
