A galvanized sheet metal sill pan flashing is set in sealant over a concrete curb at the edge of a slab. The pan features a quarter-inch upturned leg that fits beneath the door threshold and a four-inch minimum downturned leg at the exterior edge. The flashing extends a minimum of two inches past the curb and is sloped to drain moisture away from the opening.
1/4" UPTURNED LEG FIT BENEATH DOOR THRESHOLD GSM FLASHING SILL PAN SET IN SEALANT; SLOPE TO DRAIN 2" MINIMUM EXTENSION PAST CURB CONCRETE CURB 4" MINIMUM DOWNTURNED LEG OF SILL PAN EDGE OF SLAB
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