Wrong insulation thickness not accounted for in clearance
Account for insulation thickness before deciding a duct clears. Bare duct clearance is not finished clearance.
Watch out
- Do not approve a tight route based on bare-metal duct only.
Check
- Measure the duct plus required insulation thickness.
- Check clearance to ceiling grid, walls, lights, access panels, and other trades.
- Confirm whether insulation will be external wrap, internal liner, or another system.
- Flag any area where insulation will make access impossible.
Steps
- Measure the duct plus required insulation thickness.
- Check clearance to ceiling grid, walls, lights, access panels, and other trades.
- Confirm whether insulation will be external wrap, internal liner, or another system.
- Flag any area where insulation will make access impossible.
Say this to your foreman
With the insulation thickness added, this clearance gets tight at [location]. Do you want this rerouted or verified before wrap?
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