Are hoods required to have a liquid-tight continuous external weld at the lower outermost perimeter?

The requirement for hoods to have a liquid-tight continuous external weld at the lower outermost perimeter is essential for several reasons. This construction detail is vital in preventing the accumulation of grease and other flammable substances that can contribute to fire hazards in commercial cooking operations. A liquid-tight seal ensures that any grease or condensation that may form within or around the hood is contained, reducing the risk of ignition and promoting better cleaning practices.

Furthermore, the NFPA 96 standard emphasizes the importance of proper hood construction to mitigate fire risks associated with cooking equipment. The liquid-tight weld not only enhances the durability and performance of the hood but also complies with safety protocols designed to safeguard both employees and property within the facility. Therefore, having a liquid-tight continuous external weld is crucial to fire safety in commercial kitchens, making this construction feature indispensable.