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™ 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™-LT is thermally broken utilizing an EPDM push-in thermal isolator. A polyamide pressure plate is available to meet even more stringent thermal performance requirements.


Our Reliance-SS Curtain Wall system is an outside glazed, front set pressure wall curtain wall system that offers screw spline assembly of frames and the ability to shop seal the frame before shipping to the project site.


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.