EFCO 8800 Series Assembly Instructions Vol.4 - Manual (Page 13)

EFCO 2009 Page 13
Series 8700 / 8800 Unitized Curtain Wall Assembly Instructions - Volume 4
Section 11 - Outside 90° Corner SSG Unit Glazing : D. Weather Seal Application
Figure 17
1. Using an approved solvent or cleaner, clean the sealant contact surfaces of the glazing and adapters of all oils and other contaminants.
2. If sealant primer is required, apply it per the primer/sealant manufacturer’s instructions.
3. Insert 3/8” diameter backer rod between the glazing and adapters around all four corners of each lite of glazing. Refer to Figure 38 on page 17 of Volume 2
for more information.
4. Apply sealant into the void between the adapters and glazing. If the sealant is properly and carefully applied, masking tape is not necessary on the adjacent
surfaces.
5. Before the sealant begins to cure or skin over, tool the sealant into the joints smoothly, taking care to smooth and blend the sealant in the corners and
intermediate intersections as shown below. Seen in section view, the sealant should have an hourglass shape and maintain a 2:1 width to depth ratio as
shown in Volume 2, page 17, Figure 38 of the S-8000 Unitized Curtain Wall Assembly Instructions. Remove any excess sealant from the surrounding
surfaces before the sealant begins to cure.
Figure 18 Figure 19 Figure 20
Sealant
Continuity Joint
Sealant
Continuity Joint Sealant
Continuity Joint
HEAD
SILL