Liner Edge Protection
Duct liner edges need to be protected so airflow does not peel, erode, or carry fibers downstream.
What This Helps With
Duct liner edges need to be protected so airflow does not peel, erode, or carry fibers downstream.
Apprentice words: liner edge, exposed duct liner, liner nosing, fiberglass liner edge, liner peeling
Common problem: Cut liner edge is left exposed at connection, access door, or fitting transition.
Check First
What Not To Do
Do not leave loose liner edges in the airstream. Do not rely on adhesive alone where mechanical fastening is required.
What can go wrong: Cut liner edge is left exposed at connection, access door, or fitting transition.
Better Foreman Question
This liner edge is exposed. Does the spec require nosing, adhesive, pins, or edge coating here?
Verify With
Source to verify: SMACNA duct liner guidance, liner manufacturer instructions, project spec
Safe wording: Liner details vary by velocity, liner type, and project spec.