Duct Leakage Class Requirements
Different duct systems have different leakage class requirements. Wrong sealing for leakage class causes test failure.
Stop if
- For this duct system, what leakage class and seal class are specified? What sealant type and coverage does that require?
Watch out
- Don't assume all duct gets same sealant. Don't skip sealant on high-pressure duct. Don't over-apply sealant on low-pressure duct.
Check
- What leakage class specified for this duct system?
- What seal class does that correspond to?
- What sealant type and application does spec require?
Steps
- What leakage class specified for this duct system?
- What seal class does that correspond to?
- What sealant type and application does spec require?
Say this to your foreman
For this duct system, what leakage class and seal class are specified? What sealant type and coverage does that require?
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