Vapor Barrier on Exterior Insulation
Exterior duct insulation requires vapor barrier to prevent condensation.
Stop if
- What vapor barrier and tape type does spec require? Minimum overlap at seams?
Watch out
- Don't install without vapor barrier in conditioned spaces. Don't use wrong tape type. Don't leave gaps or tears unrepaired.
Check
- Vapor barrier intact with no tears?
- All seams taped with matching tape?
- Overlap sufficient per manufacturer?
Steps
- Vapor barrier intact with no tears?
- All seams taped with matching tape?
- Overlap sufficient per manufacturer?
Say this to your foreman
What vapor barrier and tape type does spec require? Minimum overlap at seams?
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