Architectural · A-T488A

Section - Mechanical Louver Sill

Materials

Steel Timber / Wood Masonry / CMU Metal (misc.)

Elements

Beams Walls Facades / Cladding Waterproofing / Flashing Insulation Drainage Connections / Plates

Connections

HSS Connection Bolted Connection

About this detail

A mechanical louver louver designated LV1 rests above a stainless steel sheet metal pan flashing with a hemmed edge, which is set in continuous sealant at both the front and back. The louver assembly is supported by a four-inch by seven-inch by three-eighths-inch steel bent plate ledger that is fully wrapped with flashing membrane and secured with bolts and nuts featuring sealant on both sides. This ledger is anchored back to a hollow structural section wind girt sized per structural drawings. Below the sill flashing, lip concrete masonry unit veneer blocks form the exterior wall cavity, incorporating weep vents spaced at thirty-two inches on center and through-wall flashing. Mineral wool thermal blocking and a sheet metal cover fill the space behind the louver frame alongside continuous sealant and backer rods. A continuous one-and-a-half-inch by one-and-a-half-inch by one-eighth-inch aluminum angle is positioned at the base of the louver. Duct connections, blank-off panels, and insect screens are installed per the manufacturer details.

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