Wall louvers and vents rough-in inspection checklist

Free area and blade type confirmed against the schedule

Approved submittal shows the free area, drainable or stormproof blade, screen type and finish the louver schedule calls for at each mark, intake or exhaust.

Sill pan and anchor metals compatible with the louver frame

Pan, flashing and anchor materials checked against the submittal so the frame does not sit on or fasten through a dissimilar metal without the separator the maker lists.

Rough opening sized square with blocking to fasten to

Opening framed to the louver's rough dimension, square and plumb, continuous blocking or sub-frame set so the perimeter fastens to solid material.

Opening location and head height match the elevations

Tape from the floor line or grid to the sill and head matches the elevations, and the opening lines up with the cladding coursing it has to meet.

Louver frame depth fits the wall build-up

Frame depth on the submittal checked against sheathing, cavity and cladding at the opening so the louver sits in the plane the head and sill details draw.

Opening returns wrapped with the barrier before the pan sets

Weather barrier or membrane turned into the rough opening at the jambs and sill and lapped as the detail shows, so the pan and jamb flashing have a sealed substrate.

Sill pan, back dam and flashing tied to the barrier

Sloped sill pan with end dams and a back dam, head and jamb flashing lapped to the weather barrier shingle-fashion so any water that enters drains back to the exterior.

Sill pan front leg set past the planned cladding face with a drip

Pan's outer edge carried past the planned cladding face per the detail with a hemmed drip, so water off the sill falls clear instead of running down the wall.

Pan corners hold water before the louver goes in

Water run into the pan stays in it at the corners and end dams and drains out the front, with no seep at seams onto the framing below.

Duct or plenum stub aligned and documented before cover

Duct or plenum stubbed square to the opening on center for the louver collar, connection accessible, transition documented open before cladding and finish close the wall.

Connected area and blank-off extent agreed with the mechanical trade

Which part of the louver face is ducted and which is blanked off confirmed on the mechanical drawings with the mechanical trade before the louver is set.

Plenum or duct bottom slopes back toward the louver

Where the mechanical drawings show a plenum or duct floor behind the louver, it pitches to drain back to the sill rather than into the building.

Louver set timing agreed with the cladding crew

Whether the louver sets before or after cladding confirmed with the super so the perimeter seal, pan and head flashing laps land in the order the details show.