Assistant Fire Chief Mark Smitton of the Maple Ridge Fire Department said the first calls about the blaze came in just after midnight Sunday.
"It was basically a fully involved building on our arrival," said Smitton.
"So it had a good hold before we arrived."
He says there was a security guard at the mill when the fire broke out, but the guard was not in the building.
About 30 firefighters helped put the flames out.
Investigators were trying to determine the cause of the blaze, but have not come to a conclusion.
"We'll have somebody out tomorrow (Monday) and they'll do an investigation as well," said Smitton.
The mill's owner, Kirk Nagy says the operation employs about 60 people and primarily manufactures cedar shakes for housing.
Nagy says now he's looking for short-term production facilities to help fill his orders.
(CKNW)(News 1130)(The Canadian Press)
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