EFCO 8800 Series Assembly Instructions Vol.3 - Manual (Page 28)

EFCO 2009 Page 28
Series 8700 / 8800 Unitized Curtain Wall Installation Instructions - Volume 3
Section 10 - Inside 90° Corner Unit Glazing Preparation : SSG and Captured
Figure 65
5. Apply the WC18 spacer gasket to the mullions as shown below and on the previous page. The gasket will run through as shown below. Butt the gaskets
together at the corners (see Figures 68, 69 and 70). “Crowd” in extra gasket, (approximately 4% to 5% extra) where it runs between the gaskets to ensure a
snug butt joint at the corners. It is important that there are no gaps in the gaskets where they meet in the corners. Note that the gasket is not symmetrical,
and must be installed so that it is flush with the side of the mullions (see Figure 66).
6. A 3/8” backer rod should be applied into the isolator reglet to prevent sealant from getting into the reglet. Remove the backer rod immediately after the
sealant is applied, and before the sealant begins to cure and skin over (See Figure 76).
Apply gaskets
flush with the side
of the mullions.
Isolator
Reglet
Insert a 3/8” backer rod into isolator reglets to
keep free of sealant. Remove the backer rod
immediately, before sealant begins to skin over.
Figure 72
Butt gaskets at
D.L.O. corners.
SILL INTERMEDIATE HEAD
Horizontal gaskets
run through.
Butt gaskets at
D.L.O. corners.
Figure 73
Figure 74 Figure 75 Figure 76
Butt gaskets at
D.L.O. corners.
Horizontal gaskets
run through.
Refer to Volume 2, page 7 for spacer
gasket configuration at the jamb mullions.
Horizontal gaskets
run through.