EFCO S5500 SSG Captured - Manual (Page 42)

EFCO CORPORATION 6/2012 PART NO. Y556 Page 42 of 81
S-5500 SSG and Captured Corner Mullion Installation Instructions
Section VII: Glazing Preparation
(Vertical SSG and Captured Horizontal)
STEP #1 SEAL JOINTS AT CORNER HEAD AND SILL AND AT CORNER MULLION
B. Seal between the mitered ends of the heads, sills, and the corner mullion to form a
wate-tight joint as shown in the detail below. The sealant must not obstruct or interfere
with the areas of the head or sill where the cover will engage. Note that this is a critical
primary seal.
C. Before applying the corner mullion glazing adapter, apply two beads of sealant to the
corner mullion as shown below at each intersection of the head, sill, and intermediate
horizontal. The corner mullion glazing adapter must be set immediately after this step
before the sealant begins to cure.
CAPTURED SILLS AT
SSG CORNER
Seal between the mitered ends
of the sills and the corner
mullion. Fill all voids
completely and tool smooth.
Apply two beads of sealant in the
reglets of the corner mullion where
the corner mullion glazing adapter
mates into the corner mullion.
Note: The corner mullion
glazing adapter must be set
immediately after applying
the sealant and before it
begins to cure.
CORNER
MULLIONS
CAPTURED
SILL
SSG CORNER
MULLION GLAZING
ADAPTER
Insert the end of the
adapter behind the
notches in the sills.
Attach the glazing adapter to
the corner mullion with the
required fasteners. Cap seal the
fastener heads with sealant.