The storefront window assembly rests on shims atop a concrete curb, with sealant-4 and a one-eighth-inch maximum gap provided at the interior threshold. A metal sill flashing laps down over the vertical face of the concrete recess, set above a detail membrane and protection board over a protected membrane assembly sloped to drain at one-quarter inch per twelve inches minimum. A backer rod and sealant-4 seal the joint between the storefront frame and the adjacent pedestal paving. Framing occurs per architectural specifications, and membrane installation follows manufacturer recommendations.
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