EFCO 945 Series - Manual (Page 48)

SECTION IX - GLAZING (cont.)
STRUCTURAL GLAZED MULLION SYSTEMS
STEP 9) FILLING THE STRUCTURAL GLAZING GAP
After the interior sealant has cured, typically an overnight setup is required. Mask off the
glass edges with masking tape to minimize cleanup and provide a professional
appearance. Then remove the temporary glazing clips and proceed with filling the void
between the glass units at the exterior with backer rod and structural silicone sealant for
a weather tight seal. At the horizontal members, fill the cavity with sealant to fill the void
out to the gasket. See Figure 68. Tool sealant using a putty knife across the glass
edges. Remove excess silicone from the glass surface by removing the masking tape
before a skin begins to form. Any excess sealant on the glass units can be removed with
a razor blade.
MDM
01/2007
1" GLASS
TYP. S.S.G. VERTICAL
8320
STRUCTURAL
SILICONE
1" GLASS
STRUCTURAL SILICONE
STRUCTURAL
SILICONE
NOTE:
THE SUCCESS OF STRUCTURAL SILICONE GLAZED PROJECTS HAS BEEN THE RESULT
OF COMPATIBILITY TESTS PERFORMED ON ACTUAL MATERIALS SUPPLIED TO THE
PROJECT. THE INSTALLER MUST MAKE SURE THAT SUCCESSFUL COMPATIBILITY
TESTS ARE PERFORMED IN ACCORDANCE WITH THE SILICONE MANUFACTURER'S
RECOMMENDATIONS AND PROCEDURES.
W160
FACE COVER
[FIG. 68]
PAGE 46
- THIS PROCEDURE APPLIES TO THE STANDARD STRUCTURAL GLAZED
VERTICAL AND THE STRUCTURAL GLAZED EXPANSION MULLION. -