EFCO S5500 Advanced User Manual
Page 36
EFCO CORPORATION 6/2012 PART NO. Y557
36
Series 5500 Advanced & Alternate Installation Instructions
Section VI: Expansion Mullions
STEP #2 STACK EXPANSION MULLIONS
A. Apply a continuous bead of sealant to the male mullion half as noted below.
B. After the frames are assembled as instructed in Section II, install the frames using the
anchor methods required. Stack the expansion mullions together using ‘C’ clamps to
press each half of the mullion together. Use shims as shown below to prevent from
closing the expansion mullion. Remove the shims after the anchors are set.
C. Tool the sealant joint in the space between the expansion mullions as shown below.
This seal will marry with the joint plug seals when the joint plugs are applied.
SHIM
SHIM
CONTINUOUS
SEALANT JOINT
1/8” notch on
male mullion side
of glazing pocket.
MALE MULLION