TinnerFlow™2nd YearDuct AssemblyGREEN · Standard Correction
A screaming TDC/Ductmate joint usually means air is escaping through a bad gasket, corner, bow, or missing clip/cleat. Find the leak and correct the joint instead of only smearing the outside.
A high-pitched scream at a flanged joint is a small leak moving a lot of air. The joint may have a folded gasket, dirty flange, loose corner, missing clip/cleat, bowed span, or uneven compression.
Shut down if needed for safe access. Inspect the whole joint, not just the loud spot. Correct gasket seating, clips/cleats, bolts, flange alignment, and approved sealant method. If the flange is bent or the gasket is trapped, the joint may need to be reopened.
Use this as training guidance. The foreman, approved drawings, project specs, manufacturer installation instructions, employer safety policy, and AHJ/code requirements always control the final answer.