Restaurant hood cleaning in Detroit should begin with a clear distinction between visible hood cleaning and full kitchen exhaust system cleaning. A complete exhaust scope may include the hood interior, grease-removal devices, ductwork and exhaust fan. Access panels, roof access, fan condition, duct configuration and the amount of grease buildup affect how the work is performed.
Removable baffle filters are taken out and cleaned separately when included. Foil, damaged or incompatible filters should not be treated as substitutes for listed grease-removal devices. For restaurant hood vent cleaning in Detroit, ask whether the proposal covers only accessible surfaces or the entire exhaust path. It should also identify protected equipment, containment, rooftop work and post-cleaning documentation.
NFPA 96 is the widely recognized standard addressing ventilation control and fire protection for commercial cooking operations. Cleaning frequency is not one universal interval. It depends on the cooking process, volume and fuel, with solid-fuel cooking and high-volume operations generally requiring closer attention than low-volume kitchens. The authority having jurisdiction and the restaurant's insurer may also have requirements, so records should be retained with other kitchen maintenance documents.