Architectural · S-C4W5N

Storefront Head, Transom, and Sill

Materials

Elements

Walls Windows Storefronts Waterproofing / Flashing Drainage

About this detail

An aluminum storefront frame system integrates head, transom, and sill conditions with adjacent wall assemblies. The head detail incorporates a fluid-applied air and weather-resistive barrier, a metal drip flashing, and a shim as required above the aluminum framing. Sealant with a backer rod seals the joint between the exterior metal drip flashing and the storefront head member, while a stationary shade bracket mounts to the interior top panel. The transom and intermediate frame members house a shade roller tube with a standard drive-end bracket and a side mullion-mounted chain tensioner assembly. The sill condition features a sheet metal sill flashing painted to match the exterior wall panel, configured with a back dam formed by a sheet metal angle and supported over a self-adhered sheet membrane. Sealant and backer rod are applied to both sides at the sill glass interface, and weep holes drain moisture to the exterior.

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