EFCO S5500 Inside Glazed - Manual (Page 12)

EFCO CORPORATION 6/2012 PART NO. Y552
Series 5500 Inside Glazed Installation Instructions
Section II: Frame Unit Assembly & Frame Sealing
STEP #4 APPLY SILL PRESSURE COVERS
A. Run a continuous bead of sealant in the reglet of the sill horizontal immediately
before applying the exterior sill pressure cover as shown below. Do not block the
weeps with sealant. (See inset below.)
B. Slide on and rotate the sill pressure covers as shown to engage the horizontal cam.
The sill 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.
C. 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,
similar to the detail on page 8.
D. When the cover is properly engaged, check the glazing pocket to ensure it meas-
ures 1 1/2”.
SILL HORIZONTAL