An exterior louver is installed upside down or backwards

Stop before siding/sealing finishes. Louvers have drainage/weather orientation; verify label/blade direction and reinstall per manufacturer/detail if water can be driven into the building.

Equipment Connections: RTU, AHU, VAV, Fans & Louvers 4th Year RED

Stop if

the blades/drain path look like they could direct water inward. I checked labels and bird screen side. Do you want it pulled and reinstalled per the manufacturer/wall detail before finish work continues?

Watch out

Do not seal around an upside-down louver and hope caulk keeps rain out.

Check

Check blade slope, drain sill, weep path, bird screen side, and orientation labels.
Look from outside to see whether rain would shed out or funnel inward.
Verify exterior wall flashing and sealant sequence.
Stop adjacent finish work if the louver has to be removed.
Photo the condition before correction.

Steps

Check blade slope, drain sill, weep path, bird screen side, and orientation labels.
Look from outside to see whether rain would shed out or funnel inward.
Verify exterior wall flashing and sealant sequence.
Stop adjacent finish work if the louver has to be removed.
Photo the condition before correction.

Say this to your foreman

This exterior louver at [location] appears oriented wrong; the blades/drain path look like they could direct water inward. I checked labels and bird screen side. Do you want it pulled and reinstalled per the manufacturer/wall detail before finish work continues?

This exterior louver at [location] appears oriented wrong

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