Top 10 Curtain Wall System Manufacturers in the USA 2026

Aug 18, 2026

Introduction

In modern commercial, high-rise, and institutional construction, facade architecture dictates both aesthetic identity and long-term structural performance.

Curtain wall systems play a pivotal role in contemporary building envelopes, providing clean exterior aesthetics, maximizing daylighting, and establishing essential thermal separation while carrying dead loads and resisting structural wind pressures and water infiltration.

Selecting top-tier curtain wall system manufacturers is one of the most critical decisions for project developers, architects, and general contractors.

A manufacturer's engineering depth, extrusion capabilities, precision shop fabrication, and supply chain stability directly impact construction lead times, field installation efficiency, and overall lifecycle performance.

Partnering with established domestic suppliers helps mitigate procurement risks, streamlines technical workflows, and guarantees compliance with stringent structural and thermal building codes across North America.

Comparison Table: Top 10 Curtain Wall System Manufacturers in the USA 2026

Rank	Manufacturer	Overview	Products	Best For
1	Oldcastle BuildingEnvelope (OBE)	North America's largest integrated building envelope provider with extensive regional manufacturing and complete glass-to-frame solutions.	Stick & Unitized Curtain Walls, Architectural Glass, Entrances, Skylights	Large-scale commercial developments and complex exterior envelope projects
2	Kawneer North America	Premier architectural aluminum systems manufacturer with deep engineering heritage, global technical backing, and energy-focused framing lines.	Thermal Curtain Walls, Unitized Facades, Storefronts, Commercial Entrances	Institutional, educational, and high-performance commercial buildings
3	YKK AP America	Innovation leader in energy-efficient architectural aluminum products, sustainable facade engineering, and advanced thermal breaks.	High-Performance Curtain Walls, Thermally Broken Framing, Sun Control Systems	Sustainable developments and projects demanding strict energy efficiency
4	EFCO Corporation	Established U.S. manufacturer of commercial aluminum systems, operating under Apogee Architectural Metals with strong institutional experience.	Custom Curtain Walls, Storefront Systems, Windows, Architectural Entrances	Mid-to-high-rise commercial, educational, and healthcare facilities
5	Enclos Corp.	Specialized facade engineering and custom curtain wall provider renowned for iconographic architectural designs and monumental skyscrapers.	Custom Unitized Curtain Walls, Double-Skin Facades, Structural Glass Walls	Complex, monumental high-rise projects and custom facade architectures
6	Manko Window Systems, Inc.	Mid-West based manufacturer known for versatile commercial aluminum systems, in-house glass fabrication, and dependable regional supply.	Stick Curtain Walls, Thermal Aluminum Framing, Commercial Windows	Regional commercial construction, renovation, and educational projects
7	Arcadia Inc.	West Coast leader in custom architectural aluminum extrusions, entrance systems, and sleek narrow-profile facade configurations.	Curtain Wall Framing, Storefront Systems, Sliding Doors, Custom Extrusions	Modern West Coast architectural projects, commercial, and mixed-use spaces
8	Peerless Products	Architectural aluminum manufacturer offering custom-engineered structural framing, acoustic control, and specialized commercial solutions.	Commercial Curtain Walls, Heavy Commercial Windows, Architectural Framing	Specialized commercial projects, replacement, and custom architectural builds
9	U.S. Aluminum (A CRL Company)	Specialized architectural aluminum division under C.R. Laurence delivering accessible, standardized framing systems across an extensive dealer network.	Standard Curtain Walls, Storefronts, Glass Fittings, Entrance Systems	Low-to-mid-rise commercial buildings, retail, and standard framing
10	Viracon	Premier architectural glass fabricator delivering high-performance, solar-control insulated glass engineered specifically for curtain wall integration.	Insulated Glass Units (IGUs), Laminated Glass, Low-E Coatings, Silk-Screened Glass	High-rise glazing specification, solar control facades, and high-performance envelopes

Top 10 Curtain Wall System Manufacturers in the USA 2026

1. Oldcastle BuildingEnvelope (OBE)

Overview

Oldcastle BuildingEnvelope (OBE) is North America’s largest independent supplier of integrated building envelope solutions. Headquartered in Dallas, Texas, OBE operates a massive operational network consisting of dozens of manufacturing and fabrication facilities strategically distributed across the United States.

The company designs, engineers, and fabricates structural aluminum framing, custom unitized curtain wall assemblies, architectural glass, and skylight systems. As a primary leader among curtain wall system manufacturers, OBE offers an end-to-end single-source model that significantly simplifies building design, project management, and jobsite logistics.

By controlling both architectural glass processing and aluminum framing fabrication under one corporate roof, OBE provides fully integrated, tested assemblies backed by comprehensive envelope warranties. Their extensive footprint makes them uniquely capable of supplying complex, multi-phased commercial developments without the supply chain bottlenecks often associated with multi-vendor sourcing.

Main Products

Stick-built and unitized curtain wall systems
High-performance architectural glass (insulated, laminated, tempered, and Low-E)
Storefront systems and heavy commercial entrance doors
Architectural skylights, canopy systems, and structural slope glazing
Blast-resistant, hurricane-impact, and acoustic facade systems

Key Advantages

1. Single-Source Integration

Manufactures both structural aluminum framing and high-performance architectural glass to eliminate vendor coordination disputes.

2. Expansive Fabrication Network

Operates plants nationwide, substantially lowering freight costs and offering regional fabrication support.

3. Comprehensive Laboratory Testing

Features extensive in-house acoustic, structural, thermal, and air/water penetration testing facilities.

4. Scalable Production Capacity

Highly equipped to fulfill major commercial office towers and large multi-building developments seamlessly.

Best For

OBE is best suited for real estate developers, facade consultants, and general contractors managing large-scale commercial towers, institutional campuses, mixed-use developments, and projects requiring single-source building envelope warranties.

2. Kawneer North America

Overview

Kawneer North America, an Arconic company, is one of the most established and foundational names in the commercial fenestration and architectural aluminum industry.

With more than a century of engineering heritage, Kawneer designs and manufactures engineered aluminum building products focused on energy management, structural durability, and architectural versatility. Kawneer’s product portfolio includes standard stick curtain walls, pre-assembled unitized framing systems, and specialized blast and impact mitigation lines.

The company works closely with facade consultants, architects, and structural engineers to deliver complete technical support—from early conceptual detailing and custom die design through shop drawing reviews and jobsite installation.

Main Products

Thermally broken stick curtain wall systems
Pre-engineered unitized curtain wall systems for rapid installation
Commercial storefront framing and high-traffic entrance systems
Sun control products, architectural louvers, and light shelves
Impact-resistant and blast-mitigation architectural framing

Key Advantages

1. Deep Technical Support

Industry-recognized structural engineering, thermal analysis, and custom architectural detailing support.

2. Advanced Thermal Performance

Proprietary thermal break technology that helps projects achieve strict LEED certification criteria and regional energy codes.

3. System Design Versatility

Broad selection of sightlines, mullion depths, and decorative cover caps to match diverse architectural aesthetics.

4. Established Installer Network

Strong relationship with certified glazing contractors across North America ensuring proper installation.

Best For

Kawneer is ideal for higher education facilities, corporate headquarters, civic institutions, and high-performance commercial projects requiring proven structural and thermal reliability.

3. YKK AP America

Overview

YKK AP America Inc. is a recognized technology leader in commercial architectural products. A subsidiary of the global YKK AP group, the company manufactures high-performance commercial curtain walls, window walls, storefronts, and balcony doors in state-of-the-art facilities located in Austell and Dublin, Georgia.

Positioned prominently among top curtain wall system manufacturers, YKK AP places heavy emphasis on sustainable design, energy efficiency, and precision manufacturing.

Their exterior curtain wall lines incorporate advanced thermal barrier materials designed to minimize HVAC operational loads, prevent condensation, and enhance overall occupant comfort in demanding climate zones.

Main Products

YCW series stick and unitized curtain wall systems
ThermaShade® solar shading systems and light shelves
Thermally broken commercial storefront systems
Heavy commercial window systems and sliding balcony doors
Coastal hurricane-impact and structural facade systems

Key Advantages

1. Thermal Engineering Innovation

Advanced thermal break designs eliminate cold bridging, delivering low U-factors for energy-conscious builds.

2. Sustainable Manufacturing

Operates environmentally responsible manufacturing plants certified under ISO 14001 standards.

3. High Precision Extrusion

Exceptional quality control over aluminum extrusion, anodizing, and powder-coat finish applications.

4. Responsive Field Support

Dedicated architectural sales representatives and field technical support staff available throughout the project lifecycle.

Best For

YKK AP America is best suited for sustainable commercial buildings, healthcare institutions, university facilities, and projects seeking high thermal efficiency and environmental certification.

4. EFCO Corporation

Overview

EFCO Corporation, operating as part of Apogee Architectural Metals under Apogee Enterprises, Inc., is a U.S.-based manufacturer of commercial aluminum windows, curtain walls, storefronts, and entrance systems.

Headquartered in Monett, Missouri, EFCO has supplied the commercial building industry with durable, custom-engineered fenestration solutions for decades. EFCO leverages its integration within the broader Apogee portfolio to offer highly coordinated facade packages.

The company excels at producing customized framing profiles, historic window and curtain wall replications, and specialized heavy-commercial systems tailored for tough municipal and educational environments.

Main Products

Standard and custom aluminum curtain wall systems
Thermally improved commercial window systems (fixed and operable)
Storefront framing and monumental entrance systems
Unitized and cassette curtain wall solutions
Custom exterior shading, louvers, and decorative grilles

Key Advantages

1. Synergy with Apogee Brands

Direct operational alignment with sister company Viracon enables streamlined glass and framing delivery schedules.

2. Customization Flexibility

Strong engineering capability for modifying standard dies and profiles to fit non-standard building geometries.

3. Institutional Structural Durability

Systems built to withstand heavy usage in schools, hospitals, and public facilities.

4. Rigorously Tested Systems

Fully certified physical testing for water resistance, dynamic wind loads, and seismic movement.

Best For

EFCO is recommended for K-12 and university facilities, government buildings, healthcare centers, and mid-to-high-rise commercial developments requiring durable, custom framing solutions.

5. Enclos Corp.

Overview

Enclos Corp. is a specialized facade engineering and curtain wall contracting firm operating across North America. Headquartered in Eagan, Minnesota, Enclos focuses exclusively on the design, structural engineering, advanced fabrication, and field erection of custom, high-performance exterior wall systems for high-rise buildings and complex structures.

Unlike traditional volume extruders, Enclos operates as a design-build facade specialist and custom manufacturer. The firm frequently leads the commercial industry in developing unitized curtain wall technologies, parametric design execution, and structural glass walls for iconic skyline structures.

Main Products

Custom unitized curtain wall systems
Double-skin dynamic and ventilated facade systems
Structural glass walls and point-supported glazing systems
Custom kinetic and geometrically complex exterior facades
Integrated tension structures, cable nets, and skylights

Key Advantages

1. Single-Source Design-Build

Offers total project responsibility covering structural design, engineering, shop fabrication, and jobsite installation.

2. Complex Geometry Specialists

Industry leader in executing complex facade geometries, sloped walls, and custom extrusion shapes.

3. Advanced Assembly Logistics

Operates regional assembly hubs to pre-assemble and pre-glaze massive unitized panels off-site.

4. In-House Engineering Power

Maintains a vast team of structural engineers, facade specialists, and 3D modeling experts.

Best For

Enclos is the top choice for iconic high-rise skyscrapers, luxury urban residential towers, complex airport terminals, and custom high-budget architectural landmarks.

6. Manko Window Systems, Inc.

Overview

Founded in 1989 in Manhattan, Kansas, Manko Window Systems, Inc. has grown from a regional fabricator into a major manufacturer of commercial aluminum windows, curtain walls, storefronts, and processed glass products.

Manko operates multiple manufacturing facilities across the Midwest and Rocky Mountain regions, serving contractors with reliable regional supply chains. Manko provides commercial construction teams with high-grade aluminum framing and insulated glass units fabricated in-house to exact project specifications.

Their regional production model enables short lead times, nimble production scheduling, and direct customer service for commercial builds.

Main Products

Stick-built aluminum curtain wall systems
Commercial aluminum windows (fixed, casement, and project-in/out)
Storefront framing and heavy-duty entrance systems
Thermal barrier framing extrusions
In-house fabricated architectural glass (insulated, tempered, and spandrel)

Key Advantages

1. Regional Agility

Fast fabrication turnaround times and reliable local delivery schedules across Midwestern and Western construction markets.

2. Combined Glass & Aluminum Fabrication

In-house aluminum processing and glass tempering/insulating under one operational roof.

3. Flexible Order Customization

Willingness to accommodate specialized sizing and custom hardware configurations without high minimum orders.

4. Direct Technical Support

Close coordination between plant engineers, sales representatives, and field installers.

Best For

Manko is best suited for regional commercial construction, mid-rise office buildings, local healthcare facilities, and educational renovation projects.

7. Arcadia Inc.

Overview

Arcadia Inc., based in Vernon, California, is a premier supplier of architectural aluminum framing systems, curtain walls, storefronts, sliding doors, and interior partition walls.

Operating substantial manufacturing facilities on the West Coast and expanding distribution nationwide, Arcadia is known for sleek aesthetics and custom extrusions. As demand grows for narrow sightlines and modern architectural aesthetics, Arcadia continuously refines its curtain wall product lines.

Their engineering division works directly with architectural design teams to draft custom extrusions that satisfy both aesthetic vision and structural load requirements.

Main Products

Thermally broken curtain wall systems
Storefront framing and entrance door assemblies
Architectural sliding and multi-slide door systems
Custom aluminum extrusions and sunshade devices
Interior architectural aluminum framing and demising walls

Key Advantages

1. Refined Architectural Aesthetics

Clean, narrow sightlines and high-end anodized or painted finishing options.

2. Custom Extrusion Capabilities

Responsive custom die development for unique structural and decorative facade conditions.

3. West Coast Footprint

Strong manufacturing capacity and rapid delivery networks across the Western United States.

4. Matching Interior & Exterior Systems

Offers cohesive framing packages for continuous visual design from exterior facades to interior spaces.

Best For

Arcadia is ideal for contemporary commercial developments, urban mixed-use complexes, tech corporate offices, and high-end hospitality projects requiring custom architectural aesthetics.

8. Peerless Products

Overview

Peerless Products, Inc. is a Midwestern manufacturer of high-performance architectural aluminum windows and curtain wall systems. Operating out of Fort Scott, Kansas, Peerless engineers fenestration products built specifically to withstand demanding structural, thermal, and acoustic conditions.

Peerless maintains complete oversight over its manufacturing pipeline, from initial extrusion design and thermal break assembly to structural testing and final packaging. Their aluminum curtain wall systems are built to comply with demanding AAMA and ASTM performance standards.

Main Products

Commercial aluminum curtain wall systems
High-performance architectural window systems
Therma-Glaze commercial framing systems
Historic replication window and curtain wall solutions
Acoustic-rated and thermally improved aluminum systems

Key Advantages

1. Specialized Customization

Exceptional capability in drafting custom framing profiles for unique structural or historical restoration conditions.

2. Quality Control Oversight

Vertically integrated fabrication guarantees tight tolerances across all framing members and joinery.

3. High Acoustic Performance

Specialized framing configurations designed to meet strict Sound Transmission Class (STC) standards.

4. Dedicated Engineering Support

Complete shop drawing packages, structural calculations, and installation guidance provided per job.

Best For

Peerless Products is best for educational campuses, government facilities, historic commercial retrofits, and mid-rise institutional construction.

9. U.S. Aluminum (A CRL Company)

Overview

U.S. Aluminum is an established architectural aluminum brand operating under C.R. Laurence (CRL), a subsidiary of Oldcastle BuildingEnvelope. U.S. Aluminum manufactures commercial storefronts, entrance doors, curtain walls, and window wall systems distributed through CRL's expansive national service network.

Integrating U.S. Aluminum into CRL’s logistics infrastructure allows contractors to procure aluminum framing alongside specialized glazing hardware, structural fittings, and accessories. This creates an accessible, reliable, single-source procurement option for standard commercial construction projects.

Main Products

Stick curtain wall systems for low-to-mid-rise applications
Commercial storefront and entrance door systems
Window wall framing assemblies
Architectural door hardware, panic devices, and hinges
Glass railing attachments and structural patch fittings

Key Advantages

1. Widespread Distribution

Available through CRL service centers nationwide for fast order fulfillment and stock replacement.

2. Integrated Hardware Solutions

Complete hardware compatibility sourced directly from CRL's extensive product catalog.

3. Standardized Detailing

Straightforward assembly procedures that reduce field labor time for regional glazing contractors.

4. Cost-Effective Framing

Budget-friendly framing options ideal for standard commercial developments.

Best For

U.S. Aluminum is best suited for low-rise commercial spaces, retail shopping centers, light commercial renovations, office parks, and standard storefront projects.

10. Viracon

Overview

Viracon, an Apogee Enterprises company headquartered in Owatonna, Minnesota, is North America’s leading single-source architectural glass fabricator. While Viracon does not extrude aluminum framing members, it plays an indispensable role in the curtain wall ecosystem, manufacturing the high-performance glass units specified within exterior wall systems worldwide.

Viracon works directly with major curtain wall system manufacturers, facade contractors, and design architects to deliver processed glass units. Their manufacturing capabilities include heat treating, laminating, insulating, digital ceramic printing, and applying high-performance solar-control Low-E coatings tailored for major commercial facades.

Main Products

Insulating glass units (IGUs) designed for curtain wall integration
Laminated structural, safety, and security glass
High-performance solar control Low-E coatings
Silk-screened and digitally printed architectural glass
Hurricane-impact and acoustic glass assemblies

Key Advantages

1. Cutting-Edge Coating Technology

Industry-leading Low-E coating technology optimized for high visual light transmittance and low solar heat gain.

2. Single-Location Glass Processing

Conducts all glass processing steps at one facility, preventing multi-vendor quality disputes.

3. Proven Landmark Experience

Premier glazing supplier for major skyscrapers, healthcare campuses, and international airport terminals.

4. Comprehensive Performance Warranties

Backs complex coated and insulated glass units with robust commercial warranties.

Best For

Viracon is the industry benchmark for high-rise commercial towers, institutional complexes, airport terminals, and project specifications requiring advanced solar control and visual glass performance.

Key Factors for Selecting Curtain Wall System Manufacturers

Selecting the right partner from the leading curtain wall system manufacturers requires balancing architectural design intent with structural engineering, manufacturing lead times, budget parameters, and long-term building envelope durability. Procurement managers, developers, and project teams should systematically evaluate candidates using four primary operational criteria.

Manufacturing Capability

A manufacturer’s physical manufacturing infrastructure and production model directly determine its ability to deliver quality components on schedule:

Production Capacity & Plant Footprint: Confirm that the manufacturer has available shop floor capacity and automated fabrication lines capable of processing the required square footage without disrupting critical path schedules.
Stick vs. Unitized Fabrication: Determine whether the project design utilizes stick-built systems (assembled member-by-member on site) or unitized systems (pre-assembled framing panels fabricated and shop-glazed in-factory). Unitized systems require manufacturers with large assembly plants, controlled shop-glazing environments, and dedicated storage logistics.
Supply Chain Integration: Check whether the manufacturer extrudes and finishes aluminum in-house or relies on third-party coaters and extruders, which can introduce lead-time variability.

Engineering and Customization Support

Exterior building envelopes must accommodate wind displacement, thermal expansion, seismic movement, and dead-load deflections:

Collaborative Design Assistance: Leading manufacturers provide in-house facade engineers who work directly with architectural teams to refine mullion depths, thermal breaks, and anchor attachment details early in design.
Custom Extrusion Die Capabilities: Evaluate the manufacturer's willingness and speed in creating custom extrusion dies when standard product catalogs cannot meet specific sightline or structural load criteria.
BIM and Submittal Workflows: Ensure the manufacturer supplies up-to-date Building Information Modeling (BIM) objects, 3D CAD details, and stamped structural calculations to streamline submittal approvals.

Product Performance and Testing

Commercial facades must undergo rigorous laboratory testing to verify safety, comfort, and code compliance:

Structural & Wind Load Resistance: Systems must meet specified ASCE 7 structural design loads, resisting positive and negative wind pressures without permanent deformation.
Thermal Efficiency & Condensation Control: Examine overall U-factor ratings and Condensation Resistance Factors (CRF). Thermally broken framing members are mandatory for complying with modern energy codes like ASHRAE 90.1.
Air & Water Infiltration: Verify static and dynamic water penetration resistance under ASTM and AAMA standards (such as ASTM E331 for water and ASTM E283 for air leakage).
Impact & Blast Certification: For coastal regions or federal projects, verify system compliance with local hurricane impact standards or GSA blast mitigation criteria.

Project Experience

Mitigating risk is central to commercial construction procurement:

Proven Track Record: Prioritize manufacturers with a documented portfolio of successfully completed projects matching your build's scale, height, and climate zone.
Glazer Network Relationships: Reputable manufacturers maintain relationships with certified, experienced glazing subcontractors trained on their specific framing profiles.
Warranty Terms: Carefully review system warranty details, ensuring coverage protects both aluminum finishes and structural glass seals over 10-to-20-year periods.

Recommended Sourcing Partner: Taiyang

While established U.S. tier-1 manufacturers offer strong domestic presence, project teams and procurement managers often face challenges such as rigid custom order minimums, lengthy tooling lead times, and premium cost structures.

For developers, facade consultants, and contractors seeking a more versatile, cost-effective manufacturing partner, Taiyang delivers a highly competitive alternative for custom commercial curtain wall systems.

Taiyang bridges the gap between high-specification facade engineering and budget-optimized procurement. Rather than forcing projects into standardized catalog extrusions, Taiyang excels in flexible OEM/ODM manufacturing, rapid die creation, and custom structural aluminum framing tailored to project-specific architectural designs.

Key Advantages for B2B Buyers & Developers

1. Rapid Custom Extrusion & Tooling

Accelerated engineering-to-production cycles for custom mullion profiles and bespoke exterior geometries, eliminating long lead times typical of large traditional mills.

2. Factory Pre-Assembly & Shop Glazing

High-precision off-site assembly for unitized panel systems, reducing jobsite installation hours, field labor costs, and thermal/water leakage risks.

3. Compliance with Global Standards

Systems engineered and factory-tested to satisfy rigorous international building codes, including AAMA and ASTM performance criteria for air, water, and structural wind resistance.

4. Direct-from-Source Cost Efficiency

Direct factory-to-site supply chain coordination that significantly lowers overall building envelope capital expenditure without compromising structural integrity or material quality.

By serving as a responsive global manufacturing extension for project teams, Taiyang provides the structural reliability, thermal efficiency, and custom fabrication freedom required to bring complex commercial building designs to life within target budget constraints.

Conclusion

Evaluating the top curtain wall system manufacturers in the USA requires a thorough understanding of project requirements, architectural design goals, structural specifications, and schedule constraints.

The ten manufacturers highlighted in this article represent the benchmark of North American facade manufacturing, offering solutions that span from standardized stick framing systems to custom-engineered unitized high-rise facades. As building codes place greater emphasis on energy efficiency, structural resilience, and long-term material sustainability, choosing a reliable manufacturing partner becomes a foundational step in project planning.

By assessing manufacturers on their physical production capacity, engineering depth, certified testing performance, and commercial project experience, developers, architects, and contractors can select the ideal supply partner to ensure project success.

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