Curtain Wall

Reliance™ Products

Reliance™ products offer a multitude of performance and design options. Varied system depths and internal nesting steel reinforcement allow tailoring of the curtain wall system to job-specific performance requirements for applications ranging from self-supported high-span lobby entries to entire building skins.

Custom Engineering

Unlike traditional curtain wall manufacturers, we can start with a clean sheet of paper. We have custom-engineered curtain walls for some of the world’s leading architects on landmark projects including Great American Tower at Queen City—HOK, Three PNC Plaza—Gensler, 1000 Connecticut Avenue—Pei Cobb Freed & Partners and many others.

Architectural Glass

Oldcastle BuildingEnvelope® can provide a fully-glazed system from one source. We are the only curtain wall manufacturer that can design, manufacture, manage and deliver custom-engineered curtain walls with fully-integrated architectural glass all from one source.


Our exclusive computer design and analysis software applications allow us to test, simulate and fully develop custom-engineered designs. And since we also supply architectural glass we have the unique ability to test our designs as one system.

Curtain Wall

Few curtain wall manufacturers can showcase a range of custom and standard curtain wall products and projects as varied as Oldcastle BuildingEnvelope®.





Finwall® is an exclusive structural wall system comprised of facade glass panels and vertical glass mullions designed to resist wind load and seismic forces.

Point Support

Point-supported canopies and facades are comprised of stainless steel spider fittings and tempered glass to resist wind load and snow load requirements.


Reliance™ is a thermally broken, zone glazed, pressure-equalized curtain wall system offering both captured and structural silicone glazed vertical mullions with multiple system depths and glazing infill options.

Reliance™ Cassette

Reliance™ Cassette Curtain Wall is a 4-sided structurally glazed system that allows the installer to shop glaze the infill onto "cassette frames" using 3M™ VHB™ structural Glazing Tape or Structural Silicone. These pre-glazed frames are then taken to the field and applied to a structural grid of standard Reliance™ or Reliance™-SS curtain wall framing providing a 4-sided structurally glazed appearance with an overall system depth of 6-3/4", 8" or 10-1/2". This system can be used in either new construction or retrofit onto existing Reliance™ or Reliance™-SS installations.

Reliance™ StormMax® High Performance

The Reliance™ StormMax™ High-Performance Curtain Wall System is designed for essential facilities, such as hospitals, emergency operations centers, fire stations and shelters.

Reliance™ Unit Wall

Reliance™ Unit Wall system is a screw spline solution engineered with starter sill and stack horizontal for easy installation.


To meet demands for more stringent thermal performance criteria, the Reliance™-HTC Curtain Wall System was developed by Oldcastle BuildingEnvelope®.

Reliance™-IG SS

Reliance™-IG SS is an inside glazed screw spline, split vertical mullion version of the popular Reliance™ SS Curtain Wall, offering captured and structural silicone glazed vertical mullions.


Reliance™-SS is an outside glazed screw spline, split vertical mullion version of the popular Reliance™ Curtain Wall, offering captured and structural silicone glazed vertical mullions with multiple system depths to meet ever growing demands for less field labor.


Energy efficiency has become a critical part of the design process in modern construction. With this in mind, Oldcastle BuildingEnvelope® has developed the Reliance™-TC Thermal Composite Pressure Wall Curtain Wall System.

Reliance™-TC IG

To complement the popular Reliance™ Curtain Wall platform, Oldcastle BuildingEnvelope™ has developed a thermal composite inside glazed curtain wall system, Reliance™-TC IG.

Signature Series Unit Wall

The Signature Series Unit Wall from Oldcastle BuildingEnvelope® is a factory assembled, sealed and glazed curtain wall product offering both Captured and Structural Silicone Glazed options

Specialty Systems

Specialty Systems are unique in their design and application.


Stackwall® is an exclusive structural wall system facade glass panels joined to vertical glass mullions with metal patch or “spider” fittings.