Static field route #109

What do I do when not sealing flange corners after assembly?

Rectangular Duct Assembly: TDC / Ductmate / FlangesPolished core starter — connector/detail check

Correct the corner condition before tightening the flange: not sealing flange corners after assembly. Corners help align and hold the flanged joint together.

Open in Field Rescue Open category

Field checklist

Verify corner pieces/clips are present
Check they are seated and not bent
Tighten/seal per the approved detail

Ask foreman

In Rectangular Duct Assembly: TDC / Ductmate / Flanges, I’m looking at: What do I do when not sealing flange corners after assembly? What should I verify before I cut, drill, seal, cover, move, or install?

Do not

Do not leave loose or missing corner hardware because the straight sides look tight.

Why it matters

Project specs/submittals, manufacturer connector instructions, shop standard, foreman direction, and approved flange detail.

Search words: tdc ductmate flange leakage