27 exterior glazing – Oldcastle BuildingEnvelope Reliance-IG SS User Manual
Page 30
27
R E L I A N C E - I G S S I N S T A L L A T I O N M A N U A L
4.8 Exterior glazing will be necessary on lites located adjacent to mid-span anchors and may also be required
at building floors. Horizontals with a removable pressure plate must be used at top and bottom of lite to
allow for exterior glazing. See FIGURE 17 & 18, page 17 . If exterior glazing SSG system, WW-300
bridges will be installed at each horizontal. See FIGURES 33,34 & 35, pages 30 & 31.
.
4.9 Position setting blocks at correct location (two per lite). Refer to approved shop drawings or dead load
charts. Lubricating the top of setting block will help insure proper setting of glass. Note: Consult glass
manufacturer for correct setting block location and length for glass sizes in excess of 40 sq. ft
.
4.10 Glazing captured system: Install interior gaskets running the vertical gasket through and butting horizontal
gaskets between. Joint between vertical and horizontal gaskets must be sealed. Horizontal gaskets should
be mitered per FIGURE 25. page 23. Crowd gasket using the formula of 1/4" per foot of aluminum extrusion.
Note: Interior gaskets will be installed prior to setting glass at exterior glazed areas.
4.11 Glazing SSG system: Install horizontal gaskets continuous across opening at upper and lower horizontal.
Crowd gasket using formula of 1/4" per foot of aluminum extrusion.
4.12 Set glass in opening from the exterior. Place one edge of glass in deep vertical pocket or in front of the
SSG mullion and swing the glass into the adjacent vertical pocket. Lower onto setting blocks. When
glazing captured system, slide glass until centered in opening which should provide 1/2" glass bite on all
edges. It may be necessary to leave glass offset in openings on the SSG system until the end of the run is
complete, then slide each lite over to center into openings. The glass for SSG system should be
positioned to leave a 1/2" joint between each lite of glass. GP-113 wedge should be installed at exterior of
captured verticals, cutting length 1" longer than day light opening.
4.13 Install pressure plate on horizontal at top and bottom of opening. These will be installed after glass has
been centered in opening. Gaskets should be installed into pressure plates prior to installation. The
GP-108 spacer gasket must be installed onto horizontal prior to attaching pressure plate. Attach pressure
plate using FS-322(#12-14 x 1" HWH Drill Flex) @ 9" O.C. and torque to 60 in/lbs.
4.14 Seal ends of pressure plate to sides of vertical mullions and seal ends of horizontal gaskets to vertical
gaskets. SEE FIGURE 29, page 28.
4.15 After installation of glass is complete for SSG system install GP-102 spacer along each side of vertical
mullion at interior, pushing spacer behind glass to create a sealant joint of minimum 3/8" depth. SEE
FIGURE 30, page 28. Spacer should be cut vertical opening plus 1" and placed in opening to extend 1/2"
above and below edge of horizontal. This joint should then cleaned using isopropyl alcohol and sealed using
a structural silicone. When using pressure plates for SSG system, cut a maximum length of three bays or
not greater than 24 feet, then seal between pressure plates as shown in FIGURE 30, page 28.
4.16 When exterior glazing a spandrel area you may use the IW-151, 1/4" glass stop or IW-152, 1" spandrel
glass stop. Using the appropriate spandrel glass stop, the GP-123 gasket will be pre-installed on the
interior of each lite in place of wedge gasket. Once glass is installed, GP-113 wedge will be used on the
exterior of vertical mullions. The pressure plate will be installed with GP-123 gasket pre-installed.
SEE FIGURE 29 B, page 28.
4.17 On SSG system, seal the exterior joint between the glass by installing backer rod and sealant between the
lites. Marry this seal into the gaskets or sealant joint on each end.
4.18 Horizontal face caps should be installed centered in opening. The face caps on SSG system should be
spliced every three bays and have a minimum 1/4" joint between each cap. This joint should be sealed by
installing backer rod and sealant between caps. SEE FIGURE 31, page 28.
EXTERIOR GLAZING INSTRUCTIONS