EFCO S5500 SSG Captured - Manual (Page 77)

EFCO CORPORATION 6/2012 PART NO. Y556 Page 77 of 81
S-5500 SSG and Captured Corner Mullion Installation Instructions
Section XI: Glazed SSG Corners
STEP #2 SET GLAZING INFILL, APPLY EXTERIOR GASKETS WHERE REQUIRED,
TEMPORARY GLAZING RETAINERS, APPLY SSG JOINTS
A. Set glazing infill. Refer to Section IX “Glazing Installation” of the Series 5500
Silicone Structural Glazed Curtain Wall Installation Instructions for detailed
information for cleaning and priming of glazing materials, substrate, and glazing
installation.
B. Apply wedge gaskets as required at all captured horizontals where applicable.
C. Apply temporary glazing retainers at each vertical and horizontal SSG location. Refer
to page 47 of this manual and to step 6, Section IX “Glazing Installation” of the
Series 5500 Silicone Structural Glazed Curtain Wall Installation Instructions for
more information.
D. Apply masking tape and silicone sealant into the SSG joints. See steps 7 and 8,
Section IX “Glazing Installation” of the Series 5500 Silicone Structural Glazed
Curtain Wall Installation Instructions for more information.
STEP #3 PREPARE AND APPLY WEATHER SEAL JOINTS
A. Clean and prepare the glass surfaces at the weather seal joint locations per the
sealant and glazing manufacturer’s recommendations.
B. Clean and prime the metal surfaces at the ends of the captured horizontals
(where used) per the sealant manufacturer’s recommendations.
C. Install the backer rod, maintaining the proper width to depth ratio in the joint
between the glazing infill panels, and apply sealant to the joint per the sealant
manufacturer’s recommendations. Tool the sealant as required, and remove all
excess sealant to provide an attractive clean sealant joint. If masking tape is
used, remove it before the sealant skins over or cures.
D. Apply sealant between the mitered ends of captured horizontals (if used) taking
care to fill the joint completely and marrying the sealant into the adjacent
vertical weather seals. Tool and smooth the seals water-tight to provide a clean
and attractive joint.
E. Do not remove the temporary glazing retainers until the silicone structural seal
has fully cured. Consult with the sealant manufacturer for the required sealant
cure time.
F. After the SSG joints have cured, remove the temporary glazing retainers, and
seal and tool the remaining gaps.