Architectural Duct Mockup and Installed Work Do Not Match

Fast answer

Pause repetitive installation and compare the work with the approved mockup for joint orientation, fastener pattern, hanger appearance, seam direction, finish, and clearances.

What to check

1. Photograph the mockup and installed condition from matching views.
2. List each difference without assuming which is acceptable.
3. Check approved finish notes and submittals.
4. Confirm the correction standard before more work repeats the mismatch.

Do not

Do not continue hundreds of feet based on “close enough” or alter the approved mockup without documented direction.

Ask the foreman

“The installed exposed duct uses a different screw pattern and hanger finish than the approved mockup. I documented both. Which condition controls before the crew continues this area?”

Why it matters

A repeated finish mismatch turns a small clarification into large-scale visible rework.