Glasco Corporation

What Glasco Corporation does

Glasco Corporation is a family-owned commercial glazing contractor and wholesale glass distributor headquartered at 18205 Weaver, Detroit, Michigan. Founded in 1947 by Harry Pheney and continued under family ownership, the company designs, fabricates, and installs architectural glass, door, and entrance systems for commercial construction and renovation projects across Southeastern Michigan. Operations span five integrated service lines: wholesale distribution of glass, storefront materials, and glazing supplies (anchored by a licensed Tubelite distributorship with in-house door fabrication); specialty products including fire-rated, X-ray, and bullet-resistant glass plus skylights; entrances and door hardware; interior glass partitions, frameless entries, and handrails; and storefront and curtain wall systems with design/build engineering. Field installation is performed exclusively by union journeymen sourced from Glaziers and Glassworkers Local 357, with project management, estimating, and AutoCAD-based design handled in-house.

The business generates revenue through two complementary streams: project-based professional services for end customers (general contractors, building owners, architects) and wholesale hardware sales to peer commercial glaziers in the Michigan market. Pricing is entirely custom and quote-driven — no public price list exists — with billing tied to project scope, materials, and labor. Customers span healthcare/medical, educational and institutional, municipal, tenant interiors, hospitality and auto retail, entertainment, religious, and industrial end markets, with a documented portfolio that includes Ferrari, McLaren Oxford Medical Center, Serra Ford, M1 Concourse, and People Driven Technology. Go-to-market is sales-led and project-based: customers are acquired via direct field sales, estimator engagement, an online estimate-request form, and word-of-mouth reinforced by featured project case studies on the company website.

The senior leadership team is unusually tenured for a firm of this scale: President Steve Hohenshil (43 years at Glasco, 47 in the industry), Controller Vicki Celeski (since 1986), VP of Operations Greg Miketa (prior 27 years at Dow and Asia-Pacific operational leadership), Senior Estimator Ed Spybrook (30+ years construction, 23 glazing), and four project managers with 10-23 years of specialized experience. Glasco remains privately held with no institutional investors, public listing, or disclosed funding; ownership has stayed within the Pheney family across three generations of operation.

Name

Glasco Corporation

Legal name

Glasco Corporation

Website

https://glascocorp.com

Company type

Private

Founded year

1947

Operating status

Operating

Headcount range

1–10 employees

Short description

Family-owned commercial glazing contractor and wholesale glass distributor serving Southeastern Michigan since 1947. Designs, fabricates, and installs storefronts, curtain walls, entrances, and specialty glass for healthcare, education, auto retail, and institutional projects.

Ownership category

akta.pro rank

Product category

Commercial Glazing Services

NAICS

Glass and Glazing Contractors (23815), Metal Window and Door Manufacturing (332321)

SIC

General Bldg Contractors - Nonresidential Bldgs (1540), Glass Products, Made Of Purchased Glass (3231), Metal Doors, Sash, Frames, Moldings & Trim (3442)

akta.pro primary industry

Architectural Glazing & Fenestration (Curtain Wall, Windows, Storefronts, Skylights) (IMAFAMAC)

akta.pro secondary industries

Architectural & Building Glazing Systems (Curtain Wall/Storefront/Canopies) (IMADAHAB), Fire-Rated Glass & Glazing Assemblies (IMADAHAH), Specialty Glazing (Acoustic, Blast, Bullet-Resistant, Smart/Electrochromic) (IMADAHAL)

Keywords

• Commercial glazing services
• Architectural glass installation
• Curtain wall systems
• Storefront and entrance systems
• Glass wholesale distribution

Headquarters

HQ city

Detroit

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Supply Chain, Operations, Marketing or Sales, Infrastructure

Revenue model

1. Commercial Glazing Services: Glasco generates revenue through providing glass and glazing installation services for commercial construction projects. This includes curtain wall systems, storefronts, entrance doors, interior glass partitions, and handrails. Revenue is project-based, derived from new construction and renovation projects across various commercial sectors.
2. Wholesale Glass and Building Materials: Glasco operates as a licensed Tubelite distributor and door fabricator, selling glass, storefront materials, door hardware, and glazing supplies to commercial glass distributors and contractors in the Michigan area. This wholesale stream provides recurring revenue from inventory sales and custom fabrication services.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels3 records

Core offering

Glasco Corporation designs, fabricates, and installs architectural glass, door, and entrance systems for commercial building projects in Southeastern Michigan. The company operates two integrated lines: (1) project-based commercial glazing installation services covering curtain walls, storefronts, entrance doors, interior glass partitions, and handrails, and (2) wholesale distribution of glass, storefront materials, door hardware, and glazing supplies as a licensed Tubelite distributor.

Product overview

Glasco Corporation offers a unified suite of commercial glass and glazing products and services centered around five core offerings: Wholesale distribution of glass and supplies, Specialty Products (fire-rated, bullet-resistant, decorative glass), Entrances (door fabrication and hardware), Interior Glass & Handrails, and Storefronts & Curtain Walls. The Wholesale division serves as a distributor for Tubelite products, providing stock glass, storefront materials, and glazing supplies. Specialty Products include skylights, safety glass products, and composite panels. Entrances covers door fabrication with custom size and security entry options. Interior Glass focuses on frameless entries, partitions, and handrails. The Storefronts & Curtain Walls division provides comprehensive facade solutions with design/build and engineering services. These offerings integrate to provide complete glazing solutions from material supply through installation.

Differentiator

Problem solved

Functional benefit

Products and services

• Glasco Wholesale Wholesale distribution of commercial glass and glazing supplies for commercial glass distributors in Michigan, including stock glass, storefront materials, door hardware, and glazing supplies. Operates as a licensed Tubelite distributor with in-house door fabrication and cut-to-size services.
• Specialty Products Specialty glass products including fire-rated glass, X-ray glass, bullet-resistant glass and doors, stained/leaded/art glass, skylights, specialty doors, and composite panels. Serves hospitals, police stations, schools, and other businesses with specialized safety and aesthetic glass requirements.
• Entrances Commercial entrance door fabrication with in-house hardware installation capabilities, offering standard, thermal, and monumental door systems, custom size entries, security entry solutions, and door hardware upgrades including high-security locks, access control systems, and advanced door closers.
• Interior Glass & Handrails Interior glass solutions for commercial applications including frameless glass entries, office partitions, and glass handrail systems. Provides modern aesthetics, natural light, and adaptive partition configurations for changing office requirements.
• Storefronts & Curtain Walls Storefront and curtain wall systems ranging from standard designs to complex custom-engineered projects, including suspended and multi-span curtain wall systems with thermal, high-performance glass options. Includes full-service solutions from pre-construction collaboration through shop drawings, design, engineering, and installation including design/build and design assist services.

Named customers8 records

Segments8 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Five partnerships are on record, tiered core, strategic and minor.

• Glaziers and Glassworkers Local Union 357coreOthersGlasco Corporation's field installers and union journeymen are exclusively sourced from Local 357. This union partnership ensures access to skilled, trained glaziers and maintains quality standards across all installation work.
• TubelitecoreChannel Partner/ Reseller/ DistributorGlasco is a licensed Tubelite distributor and door fabricator. They stock standard doors, extrusions, accessories, components, and a variety of glass in different thicknesses and tints. Most glass and metal can be ordered in customized cut sizes.
• NanaWallstrategicTechnology or IntegrationGlasco utilizes NanaWall folding door systems as part of their comprehensive glazing solutions, particularly for projects like the M1 Concourse Event Center that require specialized door systems.
• PAC CladminorChannel Partner/ Reseller/ DistributorGlasco stocks PAC Clad aluminum sheet for brake metal fabrication, offered in .040 thickness in 10' and 12' lengths for customer projects.
• Epco Sliding Reception WindowsminorChannel Partner/ Reseller/ DistributorGlasco offers Epco sliding reception windows as part of their wholesale inventory, available in Assembly #15 for 1/4 inch glass in clear and dark bronze anodized finishes.

Scale indicators1 record

Recent moves6 records

Expansion highlights5 records

Regional players

• Baker Glass: Baker Glass is a commercial glass and glazing contractor serving the Michigan market with storefront, entrance, and custom glass work — a regional peer competing with Glasco directly in the same Detroit-area project pipeline.

Others

• Tubelite: Tubelite is the storefront and curtain wall framing manufacturer for which Glasco is a licensed distributor. As a critical supplier partner, Tubelite shapes Glasco's product economics and competitive positioning, making it the most relevant ecosystem peer despite not being a direct competitor.

Direct peers

• Giroux Glass: Giroux Glass is a commercial glazing and glass subcontractor serving the western U.S., with deep capabilities in curtain walls, storefronts, and specialty safety glass — directly comparable to Glasco's full-scope commercial glazing service offering.
• W&W Glass: W&W Glass is a commercial glazing and curtain wall contractor operating across the eastern U.S., with a comparable mix of storefront, curtain wall, entrance, and specialty safety glass work — making it one of the closest functional analogs to Glasco at a larger geographic scale.
• Carmody Glass: Carmody Glass is a commercial and architectural glazing contractor with storefront, curtain wall, and interior glass capabilities serving healthcare, education, and retail — closely matching Glasco's vertical exposure and project types.
• JE Berkowitz: JE Berkowitz is an architectural glass and glazing contractor serving commercial and institutional projects along the East Coast. Its combination of fabrication and installation of curtain walls, storefronts, and interior glass aligns directly with Glasco's service mix.
• Poma Glass & Specialties: Poma Glass is a commercial glazing contractor delivering storefront, curtain wall, entrance, and specialty glass solutions for healthcare, retail, and institutional projects — a direct comparable in scope, vertical mix, and project size.

Broad incumbents

• Vitro Architectural Glass: Vitro Architectural Glass (formerly PPG and Vitro America) is a major architectural glass manufacturer supplying float glass, coated glass, and laminated products to the commercial glazing channel. It is an upstream broad incumbent that competes indirectly with Glasco's fabricated glass scope.
• Arch Aluminum & Glass: Arch Aluminum & Glass is a larger-scale architectural glazing company offering storefront, curtain wall, and entrance systems across multiple U.S. regions. As a broader incumbent with deeper geographic reach, it competes with Glasco on larger commercial scopes.
• Oldcastle BuildingEnvelope: Oldcastle BuildingEnvelope is the largest North American building envelope and architectural glazing provider, offering glazing systems, hardware, and installation services. It is a broad incumbent whose commercial glazing division competes with regional specialty glaziers like Glasco for marquee projects.

Market position

Strengths5 records

Weaknesses5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/glasco-corp

Revenue estimate

Valuation estimate

Number of profiles

Profiles9 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Glasco Corporation