4. Water deflectors
Water deflectors should be
installed at each end of intermediate horizontal members to
channel water down the vertical
mullions, which helps ensure
proper internal drainage.
Fig. 4
5. Gaskets
Glazing gaskets are prone to shrink
over time and pull away from the
corners. To remedy this, the gasket
length should be oversized to account for eventual shrinkage. After
the gaskets are sized and installed,
lift them as shown in Figure 5
and seal with DOW 795 sealant.
Paying close attention to the system selected and how it is ealed during installation can provide peace of mind for the building owner and contract glazier. Pictured, Vitro America’s Classic Line Architectural Aluminum Storefront System.
Ten tips for storefront
installations
1. Always follow the manufacturer’s installation instructions.
2. Install frames level and plumb.
3. Ensure proper tolerances between the frame and substrate.
4. Secure frames properly to the structure to resist dynamic
forces of shear, tension and compression.
5. Remove all debris from glazing pockets before completing
the installation.
6. Double check for proper sill flashing installation, including
anchoring the systems and installing end dams.
7. Pay careful attention to placement and sealing of gaskets,
including sealing gasket corners.
8. Install water diverters at the ends of each intermediate
horizontal member.
9. Center the glass in the daylight opening and install the
proper setting blocks.
10. Focus on craftsmanship. It is better to take the time up
front than to deal with expensive call-backs.
Fig. 5
