EFCO S5500 SSG - Manual (Page 39)

EFCO CORPORATION 6/2012 PART NO. Y554
Series 5500 Silicone Structural Glazed Curtain Wall Installation Instructions
Section VI: Exterior Cover & Drive-In Gasket Installation
STEP #2 (Option B) APPLY HORIZONTAL PRESSURE COVERS
D. Run a continuous bead of sealant in the reglet of the Head and Sill immediately before ap-
plying the exterior pressure cover as shown below. Do not block weeps with sealant. (See
inset below).
E. Slide on and rotate the pressure covers as shown to engage the horizontal cam. Be sure
the weep holes in the cover are facing downward. The head horizontal has a continuous
snap engagement to retain the cover. Use a block of wood and mallet or hammer to make
the snap, if necessary. Care should be taken to avoid damaging the pressure cover. Since
the covers are cut D.L.O. minus 1/8”, make sure the gap at each end of the cover is equal.
F. Tool the sealant smooth on each end of the covers. After the sealant partially cures, use a
blade to cut the excess sealant flush with the surfaces of the covers.
INTERMEDIATE
PRESSURE COVER
HEAD PRESSURE
COVER
CONTINUOUS SEALANT
BEAD
REQUIRED AT HEAD AND
SILL ONLY
INTERMEDIATE HORIZONTAL
HEAD & SILL HORIZONTAL