Precision Glass Bending Bent Insulating Glass Units

A warm-edge spacer is assembled as a dual sealed hermetic space between annealed, heat-strengthened, tempered, or laminated glass. While creating a relationship between the strength and breakage properties of the component glass layers, the resulting bent unit insulating glass unit also offers increased insulation values for comfort, energy conservation, and climate control economy.

This product begins as flat glass commonly selected from the broad range of commercial float products including clear, ultra clarity low-iron, grays, bronzes, greens, and blues. The surface may have a reflective, low-e, self-cleaning, or other pyrolitic coating. Specific colors and coatings are often known simply by the brand names assigned by primary glass manufacturers⁸. We also process patterned, stained, cast, glue-chip, ground, and acid-etched glass. These flat sheets are CNC fabricated and then undergo the complex processes to create annealed, heat-strengthened, or tempered bent glass². Matching products may then be permanently assembled as glass plies bonded by a lamination interlayer to create bent laminated glass. Finally, annealed, heat-strengthened, tempered, or laminated bent glass products may be permanently assembled as glass layers joined by a hermetically sealed space to create a bent insulating
glass unit.

We offer bent insulating units in 1/2" thickness assemblies and up⁵. The available spacers include 3/16" to 13/16" thick, with options for a slim instead of normal profile, custom colors, and argon gas fills.


	Spandrel units can be created using heat-strengthened or tempered glass coated on a non-exterior surface with solid ceramic frit or fallout resistant silicone spray³. The bent insulating glass possible includes that within the broad range of sizes and radii referenced in the capabilities tables for the component glass products to be assembled as layers in the unit¹. Adjoining individual units with different radii, reverse installations, and flat glass allow the creation of unique shapes⁶. The table lists a few of the possible assemblies of glass layers and spacer used to create bent insulating product.

	How to Measure:	Capabilities Table:

	Download CAD DXF \| PDF	Click to Enlarge
	Our bent insulating glass units conform to the applicable criteria of ASTM E774. Our insulating glass units are the subject of a written five-year warranty statement⁴.

IMPORTANT: Unless otherwise acknowledged in writing, our insulating units are assembled with black Edgetech Super Spacer® backed by a perimeter sealant of black Delchem D2000 Reactive Hot Melt Butyl. All edges of these units must be captured in framing with a minimum 9/16-inch bite. Edges acknowledged as low-profile must be captured with a minimum 7/16-inch bite. Units to be used as a structural material, such as those with exposed edges, MUST be acknowledged in writing as having a structural seal. Unless otherwise acknowledged in writing, our structural seal has a standard 9/16” profile (11/16" bite to capture) and is assembled with black TruSeal Swiggle® spacer backed by a perimeter sealant of black GE MOMENTIVE PERFORMANCE IGS-3743 silicone. Insulating units of either type must ONLY be installed using compatible glazing materials as approved by the manufacturer of the respective perimeter sealant material.

WARNING: Annealed and heat-strengthened glasses are designated as NON-SAFETY GLASS PRODUCTS unless permanently assembled in a certified laminated glass, as alone they do NOT meet the requirements of CPSC 16 CFR 1201 and ANSI Z97. 1-1984 defining safety glass products for architectural safety glazing in the United States of America. Annealed or Heat-strengthened glass must NEVER be used in those instances where safety tempered or safety laminated glass is required by the law, thermal or mechanical loads, or applicable codes. Only glass fabricated by Precision Glass Bending, and issued with an individual permanent logo or certificate stating it has been heat-strengthened, is certified to be heat-strengthened. All heat-strengthened glass can experience spontaneous breakage, though it is less prone to this than tempered.

Super Spacer® is a trademark of Edgetech IG, Inc.
Swiggle® is a trademark of TruSeal Technologies, Inc.
IGS-3743® is a trademark of GE Momentive Performance Materials.

WARNING: Tempered glass meeting the requirements of CPSC 16 CFR 1201 and ANSI Z97.1-1984 is defined as a SAFETY GLASS PRODUCT for architectural safety glazing in the United States of America.Only glass fabricated by Precision Glass Bending, and issued with an individual permanent logo or certificate stating it has been tempered in conformance with these requirements, is certified to be tempered with the category I & II safety designation. All tempered glass can experience spontaneous breakage. If broken, tempered glass falls out of it’s opening in interlocking clumps. For this reason, we recommend against using tempered glass for glazing above populated areas in commercial buildings and skylights in homes. Tempered glass can, on occasion, break into large shards rather than the classic tiny piece pattern.

WARNING: Laminated glass meeting the requirements of CPSC 16 CFR 1201 and ANSI Z97.1-1984 is defined as a SAFETY GLASS PRODUCT for architectural safety glazing in the United States of America. Only glass fabricated by Precision Glass Bending, and issued with an individual permanent logo or certificate stating it has been laminated in conformance with these requirements, is certified to be laminated with the category I & II safety designation. Laminated glass assembled with plies of annealed glass must NEVER be used in those instances where plies of heat-strengthened or tempered glass are required by the law, thermal or mechanical loads, or applicable codes. All heat-strengthened or tempered glass assembled in laminated product can experience spontaneous breakage, though heat-strengthened is less prone.

We recommend insulating units assembled using only a single layer of laminated glass are NOT installed directly overhead unless the laminated glass is in such a position as to minimize the risk of injury from falling glass in the case of breakage. Unless we acknowledge otherwise in writing, units assembled using only a single piece of laminated glass are assembled with the laminated glass as the concave layer.

We recommend insulating units assembled using only a single layer of laminated glass are NOT installed directly overhead unless the laminated glass is in such a position as to minimize the risk of injury from falling glass in the case of breakage. Unless we acknowledge otherwise in writing, single laminated pieces are always assembled as the concave layer in a unit.