EFCO S5500 Inside Glazed - Manual (Page 6)

EFCO CORPORATION 6/2012 PART NO. Y552 6
Series 5500 Inside Glazed Installation Instructions
Section II: Frame Unit Assembly & Frame Sealing
STEP #2 SEAL EXTERIOR PRESSURE COVER
A. Plug the ends of the exterior portion of the I.G. horizontals with backer rod. Recess
the backer rod at least 1/4” from each end of the pressure cover.
B. Apply a generous amount of sealant to cover the hollow portion of the cover as shown
below, on each end. Apply sealant to each end of the horizontal as shown on page 7.
The sealant in both areas must be applied immediately before frame assembly.
C. After the frame is assembled, 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 sur-
faces of the covers. (See page 8.)
HEAD & INTERMEDIATE I.G. HORIZONTAL
INSERT BACKER ROD
APPLY SEALANT ON EACH END.