Static field route #323

What do I do when joint opens after lift because duct unsupported?

Sealing, Leakage, Mastic & Pressure Testing.1 field-polished — seal/test detail check

If a joint opens after the lift, the duct is probably unsupported, stressed, or misaligned. Fix support/fit before sealing.

Field checklist

This joint opened after lift because the duct looks unsupported/stressed. Do you want support corrected before sealing?

Do not seal a joint while duct weight is still pulling it apart.

The seal will fail again if the duct is still loaded wrong.

Search words: seal leakage pressure test support/leakage