Insulation seams/joints not sealed
Seal insulation seams so the vapor barrier is continuous. Open seams let moisture, dirt, and air movement get into the insulation.
Watch out
- Do not leave seams open because they face the deck or wall.
Check
- Check lap direction and seam overlap.
- Use the approved tape/mastic/jacket closure for the insulation system.
- Seal corners, fittings, and underside seams - not just the easy face.
- Recheck after the duct is bumped or moved.
Steps
- Check lap direction and seam overlap.
- Use the approved tape/mastic/jacket closure for the insulation system.
- Seal corners, fittings, and underside seams - not just the easy face.
- Recheck after the duct is bumped or moved.
Say this to your foreman
Do you want this insulation seam sealed with the project-approved tape or another closure method?
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