---
catalog: WEB-I3
catalog_name: Insulating Glass Fabrication Supplies
page: 22
sku_count: 1
skus:
  - "FT"
bases:
  - "FT"
generated_at: "2026-05-21T23:30:08Z"
---

# Insulating Glass Fabrication Supplies -- Page 22

This page features 1 products:

`FT`

## Page Content

FHC INSULATING GLASS FABRICATION, SUPPLIES, AND EQUIPMENT
SECTION 2
Glazing Vinyl
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FHC IG Fabrication Methods
THE GLAZING SUPPLY COMPANY
E X P E R I E N C E  A N D  I N N O V A T I O N
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Glazing
Wrap-Around Vinyl 
Glazing Method
This method is mainly employed for aluminum sliding windows and patio doors. 
Two vinyl gasket options are available: one with corners that can be clipped at the 
90-degree bend, and another with a perforated face. The perforations are vital to
ensure proper drainage to the window frame. It’s crucial to apply the vinyl uniformly
to establish and sustain a watertight seal. While setting blocks are not required in
this method, remember to include weep holes leading to the exterior in the sill of the
window frame.
Structural Glazing  
Gasket Method 
This method is highly favored in commercial glazing. The gaskets come in precise 
sizes with built-in weep holes. Begin by placing the insulating glass unit on neoprene 
setting blocks at the quarter points. Then apply a secondary wet seal to the inside 
lip of the exterior side of the gasket. Additionally, you can add a secondary seal to the inside lip of the interior side of the gasket. 
When using metal band units, be cautious. They may require a special gasket. Ensure that the metal band at the unit’s edges doesn’t 
bind the gasket. Use neoprene setting blocks with a shore “A” hardness of 70 to 90 durometer. Always use at least two setting blocks, 
positioned at the quarter points of the unit. These blocks should be wider than the unit’s thickness, and their length should support 
the unit’s weight. Maintain face clearances of at least 1/16 inch for units up to 12 sq ft and 1/8 inch for units ranging from 12 to 70 sq 
ft We recommend a minimum face clearance of 1/8 inch when using gun-grade glazing materials or for all commercial and high-rise 
applications. Note that these clearances may not apply to “squeeze glazing” applications.
Adapter Glazing 
This method is popular for converting single-glazed wrap-around 
vinyl aluminum sliding windows to dual-glazed insulating glass 
units. Here’s how it works: Use an extruded aluminum adapter 
channel designed to fit into the 1/8-inch and 3/16-inch glazing 
channels of the original frame. For residential windows, install a 
1/2-inch insulating unit that is 1/8 inch smaller than the exposed 
glass area (inside sight line) into the Adapter Channel. Use a 1/2-
inch glazing 
vinyl. For patio doors and large picture windows, adapt using 
wider channels and glazing vinyl. To complete the assembly, 
apply a bead of Neutral Cure Silicone sealant to the mitered 
corners of the adapter frame. This method is an effective way to 
upgrade single-glazed windows to dual-glazed insulating glass 
units, enhancing energy efficiency and comfort.
Gasket