Window Wall


Unlike traditional window wall manufacturers, we can start with a clean sheet of paper. Our custom window walls integrate seemlessly with Entrances, Storefronts and Architectural Windows in order to meet the expectations of designers, architects and building owners.

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 window 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.

Window Wall
After engineering and manufacturing millions of square feet of our Window Wall, Oldcastle BuildingEnvelope® is an unquestioned leader in driving window wall technology.





The ICR-225 Thermally Improved Window Wall from Oldcastle BuildingEnvelope® offers two system depths for greater design flexibility.


The PDR-225 Window Wall system by Oldcastle BuildingEnvelope® is a shop assembled, field glazed product that features a 3/8" polyurethane break for exceptional thermal performance. Accepting a variety of 1" infill, PDR-225 is available in both inside and outside glazed configurations.

Reliance™ Window Wall

The Reliance™ Window Wall is a factory assembled, sealed and glazed window wall product offering both captured and non-captured options with a variety of 1" infill options.

Signature Series SGHT

The Signature Series SGHT Window Wall from Oldcastle BuildingEnvelope® is a factory assembled, sealed and glazed product that is available with a variety of 1" infill options. Both 3M™ structural glazing tape and structural silicone versions are available to meet a variety of specifications. Reinforced polyamide struts are integrated into the head and sill cans to provide exceptional thermal performance.


The TCR-250 Ribbon Window from Oldcastle BuildingEnvelope® is the next step in thermal performance. This new ribbon window system also offers a full line of accessories to accommodate various door framing and anchoring options.