Specifying a structural glass wall is a different exercise than selecting standard wall materials. Glass architecture has become ever more popular among architects, structural engineers, glaziers, and spec writers, but it requires a bit of expertise. Fortunately, Circle Redmont® has 60+ years of experience as a US manufacturer of engineered structural glass.
Our guide will walk you through the most important things for a specifier to evaluate, including load performance, glazing selection, framing systems, code compliance, and installation.
What Qualifies as a Structural Glass Wall System?
A structural glass wall is an engineered glass-and-metal assembly designed to carry or transfer load. This sets it apart from curtain wall systems, which typically hang from the building structure, and non-load-bearing partitions, which divide space without contributing to structural performance. That distinction matters for specification, liability, and code compliance.
Typical applications include commercial façades, multi-story lobby feature walls, daylighting walls, interior partitions with guardrail requirements, and below-grade light walls. These systems can appear across the building envelope and interior alike, each placement placing different structural and environmental demands on the assembly.
Load Ratings: What Specifiers Must Account For
A structural glass wall must be designed around several load types:
- Dead load: the self-weight of the glass units and framing
- Live load: occupancy loads, leaning, and incidental impact
- Wind load: positive and negative pressure for exterior assemblies
- Seismic considerations: drift accommodation and connection detailing
- Impact and human-safety loads: critical where the wall functions as a barrier
According to the International Building Code (IBC), safety glazing is required in hazardous locations, including near doors, low glazing, and wet areas. Specifiers should confirm that any system under consideration has been tested and certified against the applicable standards.
Glazing Options for Structural Glass Walls
Glazing selection affects structural performance, thermal behavior, and visual outcome. Common options include:
- Laminated glass: Interlayers retain fragments after breakage, making this the standard for safety glazing compliance in hazardous locations.
- Tempered / heat-strengthened glass: Greater surface compression improves strength and thermal performance.
- Glass block and glass brick units: Mass construction with strong impact resistance and excellent light diffusion.
- Low-iron glass: High clarity and color-neutral transmission for premium visual applications.
- Insulated glass units (IGUs): Excellent thermal performance for exterior walls.
- Coatings, tints, textures, and colored glass: Solar control, privacy, and aesthetic differentiation.
Framing and Support Systems
The framing system distributes load to the surrounding structure. In terms of material, steel offers higher strength for demanding spans; aluminum is lighter and more corrosion-resistant for many exterior conditions. Key detailing considerations include:
- Anchorage and perimeter connection conditions
- Thermal breaks at exterior assemblies
- Movement and expansion joints to accommodate building drift
- Waterproofing at sill and head conditions for exterior walls
- Interior vs. exterior framing considerations
Note that pre-engineered panelized systems reduce field labor and typically also improve quality control compared to site-built assemblies, which matters for both schedule and structural consistency. However, onsite-assemblies often have the advantage for unique custom installations.
Codes, Standards, and Compliance
Applicable references for structural glass wall specification typically include:
- IBC for structural load provisions, fire ratings, and glazing requirements
- ASTM for glass strength and load resistance
- CPSC for safety glazing in hazardous locations
- ADA and IBC guardrail provisions where the wall serves as a barrier
- ASTM E90 / STC ratings where acoustic performance is specified
This may seem like a lot of hoops to jump through, but that’s why it’s so important to work with certified, tested and engineered systems. Working with an experienced manufacturer like Circle Redmont® is important to support warranty claims, liability documentation, and longevity.
Installation Considerations for Specifiers
When specifying, consider the benefits of prefabricated panels versus on-site assembly, and evaluate site conditions, including substrate stability and structural support requirements, to ensure proper installation. Sequencing and tolerances must be carefully coordinated with other trades to avoid conflicts during construction.
Proper handling, staging, and protection of glass units are essential to prevent damage. Accurate field measurements, detailed shop drawings, and a clear submittal workflow can go a long way to help avoid delays and ensure compliance. Addressing these considerations early can significantly improve installation efficiency and overall project success.
Circle Redmont® Structural Glass Wall Systems
Take a look at three systems Circle Redmont® offers to cover the full range of structural glass wall applications:
Elite™ Glass Block Panel Systems: Pre-engineered glass block wall panels for streamlined installation. Key specification notes: superior structural integrity and impact resistance; fully customizable panel sizes, finishes, and styles; enhanced light diffusion.
91R™ Glass Pavers and Metal Systems: Engineered for large-scale, multi-story vertical feature and lobby walls. Designed for tall spans and high-traffic commercial environments, with customization available for project geometry and finishes.
SolarWhite™ Glass Block & Metal Systems: A modern reinterpretation of historic vault lights, pairing metal framework with glass blocks and glass bricks. Key specification notes: supports live loads up to 60 lbs./sq. ft.; prefabricated units for quick installation; cost-effective, energy-efficient daylighting.
All three systems are available with custom engineering support, including tailored sizes, shapes, finishes, and stamped project documentation.
Talk to the Circle Redmont® Engineering Team
Whether you’re early in the design phase or deep in the submittal process, Circle Redmont®’s team can provide technical support, specification data, and custom engineering for your structural glass wall project. Reach out today to discuss your project directly with our expert team.
