---
catalog: WEB-I3
catalog_name: Insulating Glass Fabrication Supplies
page: 23
sku_count: 3
skus:
  - "S450"
  - "S50"
  - "S790"
bases:
  - "S450"
  - "S50"
  - "S790"
generated_at: "2026-05-21T23:30:08Z"
---

# Insulating Glass Fabrication Supplies -- Page 23

This page features 3 products:

`S450`, `S50`, `S790`

## Page Content

FHC INSULATING GLASS FABRICATION, SUPPLIES, AND EQUIPMENT
SECTION 2
FHC IG Fabrication Methods
IG21
Bulk Quantities Available
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Sealants
Visit fhc-usa.com to search for
Enter the Item Number or scan QR code with  
your smartphone for complete product details
This procedure is typically reserved for 
high-rise building projects. Glazing tapes 
are available with pre-attached spacers 
or without. Opt for a tape that maintains 
consistent thickness and possess strong 
adhesive properties.
Attach the glazing tape to the immobile 
leg of the stash. Then apply a seamless 
bead of sealant compatible with the tape 
to the detachable stop section. Install 
the insulating glass on neoprene setting 
blocks positioned at the sash’s quarter 
points, ensuring the drainage holes are 
oriented outward. Secure the detachable 
stop back onto the sash. For units 
exceeding 100", the use of spacer shims in 
the tape is advised to enhance stability.
Glazing Compounds 
It’s important to note that simply recommending a neutral 
cure silicone or acrylic latex compound is not a guarantee of 
compatability. Each sealant should be individually tested and 
certified for compatibility.
For insulating glass glazing, FHC recommends the following 
compatible sealants: Item No’s S790 and S450 Neutral Cure 
Silicones, as well as S50 Siliconized Acrylic Latex Caulk.
We cannot emphasize enough how critical it is to set and glaze 
insulating glass units using the right compounds and methods. 
This is essential to eliminate the issues that have plagued the 
industry in the past. Manufacturers of non-captive units should 
provide their customers with the glazing specifications, along 
with a copy of the sealant compatibility list, to help prevent 
failures due to improper setting and glazing.
This technique is suitable for both 
towering structures and modest buildings, 
and it’s highly recommended for sealing 
insulating glass units. It’s similar to the
tape-only method but includes an 
additional sealing step for reinforcement.
Place glazing tape on the fixed section 
of the window frame. Then, lay a bead 
of sealant that’s compatible with the 
tape onto the part of the frame that can 
be removed. Place the glass on setting 
blocks, which should be at the frame’s four 
corners, and make sure the drainage holes 
face outside. Reattach the removable part 
of the frame. Once it’s in place, seal the 
frame with a wet sealant and angle it to 
direct water away from the glass, ensuring 
proper water runoff. The drainage holes 
are a crucial component of this setup.
This installation method is frequently 
chosen for low-rise and storefront settings. 
Attach spacer shims on the stationary 
sash leg’s face, not to exceed 18" apart. 
Position the insulating glass on neoprene 
blocks at the quarter points. Affix spacer 
shims on the glass unit face, spaced no 
more than 18" center-to-center, then 
secure glazing stops with a heel bead to 
ensure a tight seal. Finish by appl

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