A round pipe only catches a tiny sleeve overlap
A tiny overlap can pop loose under vibration or air pulse. Recut/replace the pipe so it seats deep enough in the collar before fastening and sealing.
Stop if
- That pipe barely catches a quarter-inch of the collar lip-the first air pulse will pop it loose. Recut that line so you get a full two-inch mechanical overlap inside the sleeve before you zip-screw it.
Watch out
- Do not screw a joint together when it barely catches the collar lip.
Check
- Measure actual insertion overlap before screws.
- Make sure the pipe is not cut short.
- Check that the collar depth is usable and not damaged.
- Re-seat the joint square before fastening.
- Fasten and seal only after full overlap is achieved.
Steps
- Measure actual insertion overlap before screws.
- Make sure the pipe is not cut short.
- Check that the collar depth is usable and not damaged.
- Re-seat the joint square before fastening.
- Fasten and seal only after full overlap is achieved.
More in Round, Spiral & Oval Duct