P20-top-of-mull-seal – Oldcastle BuildingEnvelope Reliance-HTC User Manual
Page 23

3.10 After removing vertical temporary retainers, install vertical pressure plates with FS−325 screws at 9" O.C.
3.11 After removing horizontal temporary retainers, center horizontal pressure plates in opening, leaving 1/8"
gap on each end. Make sure that weep holes are on the top side of the pressure plate. When installing
NOTE: Horizontal pressure plates and face covers run continuous over SSG mullions, not to exceed 3
lites in length. SEE FIGURE 16 for splicing and sealing instructions.
3.12 After all pressure plates are installed on the frame, torque FS−325 screws to 90 in−lbs. The use of either a
drill motor with a torque limiter or torque wrench can be used. If using a cordless drill, check torque
periodically since battery usage will affect the torque setting.
3.13 Install vertical face covers. Using a wood block to protect the cover, apply with dead blow soft face
hammer. Pin the vertical face covers once per length as required, concealing pin at a horizontal location.
3.14 Insert backer rod into cavity at the top of each vertical mullion. Seal off end of vertical, sloping sealant
back to marry with the perimeter seal. SEE FIGURE 17.
3.15 Seal horizontal pressure plates against the vertical face covers. Tool sealant into the joint.
SEE FIGURE 18, page 12 .
3.16 Install horizontal face covers, leaving an equal gap at each end. Make sure that the weep hole in the face
cover is on the bottom.
FIGURE 17
Sealing Top of Captured Verticals
Mullion end cap
Primary perimeter seal
Backer rod inside
vertical face cover
& seal over top
GLAZING
R E L I A N C E − H T C I N S T A L L A T I O N M A N U A L
MAY 2013
20
Phone: 1-866-OLDCASTLE (653-2278)
Web Address: www.oldcastlebe.com
holes in pressure plates as required.
horizontal pressure plate fasteners, start at center and work to each end while pressing firmly on pressure
plate.
fasteners must be located 1 1/2˜ from horizontal/vertical mullion fasteners must be located 1−1/2" from
horizontal/vertical mullion intersections in order ot maintain proper compression on the glass. Drill 7/32"