A blaze has broken out at a warehouse belonging to a trouble-plagued Melbourne recycler, in what is at least the tenth factory fire at a waste facility since October last year.

More than 40 firefighters took about 45 minutes to make SKM Recycling's Laverton North plant safe after the fire was reported about 5.30pm on Monday.

Recycling stockpiles at SKM Recycling in Laverton North. Credit:Jason South

Crews arrived to find the fire in a processing machine surrounded by bales of waste. The Metropolitan Fire Brigade scrambled 11 trucks, two aerial units and a rescue unit to the Gilbertson Road site.

All staff inside the building were evacuated safely.