By Tennessee Hood Cleaners · Updated 2026-10-11
The rooftop problem
Grease from the exhaust fan drains onto the roof unless it is contained. Over time it can damage roofing materials and create a slippery, combustible surface.
Containment basics
Grease boxes or absorbent containment systems collect grease at the fan. They need periodic service or replacement as they fill.
Maintenance tips
Clean the fan regularly, check containment during each cleaning, and address roof staining early.