Acoustic liner was installed inside out
The coated liner face belongs toward the air stream. If raw fiberglass faces the airflow, it can erode, shed, and fail inspection.
Stop if
- The liner is inside out. The dark coated side has to face the internal air stream to stop the air from tearing the insulation apart. Pull it out, flip the blanket around, and spin-pin it down right.
Watch out
- Do not leave raw fiberglass exposed to active duct airflow.
Check
- Identify the coated/black face before installing liner.
- Confirm airflow side of the duct shell.
- Pull and flip liner if raw fiberglass faces inward.
- Check pins/adhesive after reinstall.
- Inspect edges and seams before closing the duct.
Steps
- Identify the coated/black face before installing liner.
- Confirm airflow side of the duct shell.
- Pull and flip liner if raw fiberglass faces inward.
- Check pins/adhesive after reinstall.
- Inspect edges and seams before closing the duct.
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