EFCO 8800 Series Assembly Instructions Vol.2 - Manual (Page 21)

EFCO 2009 Page 21
Series 8700 / 8800 Unitized Curtain Wall Assembly Instructions - Volume 2
Section 6 - Captured Unit Glazing : B. Setting and Caulking Glazing
Apply structural silicone
sealant into the void and
tool the joint to fill the
void completely.
Insert a 3/8” backer rod
into isolator reglet to keep
free of sealant. Remove the
backer rod immediately
before sealant begins to
skin over.
3. Set the glazing on the silicone spacer gaskets positioned as shown below. The edge of the glazing is flush with the edge of the vertical mullion. Refer to
Figure 54 below. Ensure the glazing is pressed firmly onto the setting blocks of the temporary retainers as shown in Figures 55 and 56.
4. Align the glazing as shown and noted. Ensure the glazing is positioned with the exterior side out, and the bottom of the glazing to the setting blocks. Care
should be exercised to avoid shifting or rolling the spacer gaskets when adjusting the position of the glass.
5. After the glass is aligned and in the final position, remove the setting blocks and temporary glazing locators.
6. Apply structural silicone sealant into the void between the glass and mullion per the sealant manufacturer’s application instructions. A 3/8” backer rod should
be applied into the isolator reglet to prevent sealant from getting into the reglet (see Figure 54). See additional notes, and Figures 57, 58, and 59 on page 22
for sealant application and tooling instructions.
7. Immediately tool the sealant joint after application to insure the joint is completely filled with sealant on all four sides of each piece of glazing. Make sure no
air bubbles or voids are present in the sealant joint.
8. Remove the backer rod, before the sealant begins to cure and skin over.
Glass is flush with
edge of mullion.
L142
Figure 54 Figure 55 Figure 56
Figure 53
Set glazing onto the silicone
spacer gaskets and against
the setting blocks at the
temporary glazing locators.
L142
Note:
Only silicone sealants
which have been
developed and tested
specifically for structural
glazing applications
should be used for
glazing purposes.
SILL
HEAD
JAMB
JAMB
Figure 55
Figure 54
Figure 56
KV03
KV04