YOUNGSTOWN, Ohio – The Omega Door Company is back in business and employees are back to work despite a devastating fire at the Youngstown business Tuesday night.

Investigators suspect the massive fire started in a back storage room of the Gibson Street facility.

Firefighters say they still need to dig through the debris where the roof collapsed to determine the cause.

But the staff is thankful for the quick work of firefighters that helped save all of the new garage doors located on the other side of the building.

They're also thankful for an employee who reacted quickly. "We're very fortunate that our office manager, Brenda Vitullo, was here around six o'clock. She smelled smoke. Because if she wasn't here, this whole place would have gone," said Ed Sulik from Omega Door Company.

Damage is estimated at one-point-two- million dollars and the company says there will be no delay in service.