Apprentice question
Stop and ask
Stop. Get direction before you touch it.
No. Treat grease/liquid exhaust construction as a stop item. Standard spiral lockseam is not a field patch for grease service.
['Kitchen grease or liquid-bearing exhaust needs approved liquid-tight construction. Lockseam spiral can leak through the seam and create sanitation, fire, and inspection problems.', 'Stop the work, identify the system type, and verify the required listed/welded material, cleanouts, slope, wrap/clearance, and inspection detail before continuing.']