One person was treated for smoke inhalation after a fire at a Marshfield business Wednesday morning.

Crews responded to a report of a fire at Masonite Architectural, a door manufacturer at approximately 9:50 a.m. When crews arrived they found a large particle board press on fire. A press release said the fire sprinkler system was activated, containing the fire while crews extinguished the press fire. However, the fire spread to the attic through the ductwork. To put out those flames a ladder truck was used to access the roof of the building. An additional fire was put out in another piece of machinery.

The location of the fire within the building made it difficult for crews to reach and extinguish the flames. As a result, crews were on the scene for 6.5 hours. One Masonite employee was treated and released for smoke inhalation. No fire service personnel were injured.

The cause and origin of the fire are under investigation.

Crews from the Marshfield Fire and Rescue Department and the Vesper Fire Department responded.