EFCO S5900 Structural Glazed - Manual (Page 21)

EFCO CORPORATION 6/2012 PART NO. Y354 Page 21 of 23
Series 5900 Silicone Structural Glazed Curtain Wall Installation
XII: Temporary Retainers and Sealant
Temporary Retainers
A.) Temporary retainers are supplied by EFCO based on the lineal footage of
structural glazed members divided by 2.
B.) The location of the temporary exterior infill retainers should not exceed a
maximum of 24”* on center. *(If high wind conditions are anticipated, additional
retainers may be required. Please consult the sealant and /or glazing infill
supplier for spacing recommendations.)
Apply The Structural Silicone Sealant
A.) EFCO does not supply sealant.
B.) The sealant is to be a structural silicone as recommended by the sealant
manufacturer.
C.) The infill and metal is to be cleaned per the silicone manufacturer’s
recommendations.
D.) Allow the structural silicone seal to cure per the manufacturer’s
recommendations before removing the temporary glazing retainers.
Exterior Weather Seal
A.) Install backer rod between the two insulated infill units or bond breaker tape
behind the monolithic infills. (Not By EFCO)
B.) Apply the exterior weather seal as recommended by the sealant manufacturer.
NOTE: Seal up to the temporary retainers. After the structural sealant cures,
remove the temporary retainers, and seal the remaining gaps.
Erector Note: Special structural dual seals are required for structural glazing infill.
The insulated glass may require a structural sealant bead at the spacer. This
will be determined by job specific information, such as design pressure, infill
lite size and other pertinent information. Consult the glass supplier and or
structural sealant manufacturer for specific application recommendations.
Reversible temporary glazing retainer
Weather seal Bond breaker tape Weather seal Backer rod