Shelter Works

What Shelter Works does

Shelter Works is a privately held US manufacturer of custom-engineered, prefabricated fiberglass (fiber-reinforced plastic, or FRP) equipment shelters and buildings, founded in 1990 and operating from its headquarters in St. Louis, Missouri, with a second manufacturing facility in Ohio. Its product line centers on made-to-order enclosures, electrical buildings (E-Houses), SCADA system shelters, chemical storage buildings, pump houses, and boiler room enclosures, all built around two proprietary methodologies: FiberBeam™ structural support technology and FiberWrap™ seamless door and wall construction, with continuous encapsulated foam insulation eliminating thermal bridges. The shelters are engineered to customer specifications in any size or color, with options including HVAC, electrical (including NEC Class I/II/III explosion-proof packages), containment basins, custom doors, and security features, and are backed by a 25-year 'Built for Life' warranty with a stated 30+ year service life.

The company operates a sales-led, engineering-driven go-to-market motion. Sales engineers assist customers with specification writing and design assistance, supported by PE-stamped drawings, an online Specification Writer tool, and dedicated project management post-purchase. Customers are primarily enterprise and government buyers across water/wastewater, natural gas distribution, telecommunications, oil and gas, mining, FAA/aviation, and energy/utilities, with named end users including Verizon, Coca-Cola Bottling, AmeriChem Systems, Knight Hawk Coal, and U.S. military installations. Revenue is generated almost entirely through one-time, quote-based sales of custom units plus professional services for specification and design, with an OEM/integrator channel embedding Shelter Works shelters inside third-party packaged systems such as chemical feed and pump skids.

Shelter Works is a small, founder-influenced organization (Tracy Switzer is identified as founder and the public face of the company) with 11-50 employees and no disclosed external investment, M&A, or subsidiary structure. The company is positioned as a specialty, high-customization manufacturer competing against steel and precast concrete shelters on durability, corrosion resistance, weight, and total lifetime cost rather than on price.

Name

Shelter Works

Legal name

Shelter Works

Website

https://shelterworks.com

Company type

Private

Founded year

1990

Operating status

Operating

Headcount range

11–50 employees

Short description

Shelter Works is a privately held US manufacturer of custom-engineered, prefabricated fiberglass equipment shelters and buildings, serving municipal utilities, industrial operators, and government customers in water/wastewater, natural gas, telecom, oil and gas, and related infrastructure verticals.

Ownership category

akta.pro rank

Product category

Custom Fiberglass Equipment Shelters and Buildings

NAICS

Drywall and Insulation Contractors (238310)

SIC

Prefabricated Metal Buildings & Components (3448)

akta.pro primary industry

Insulation, Scaffolding & Access Services (ISA) (IMAIACAF)

Keywords

• Custom fiberglass shelters
• Equipment enclosures
• Fiber-reinforced plastic buildings
• Prefabricated industrial shelters
• Explosion-proof equipment buildings

Headquarters

HQ city

St Louis

HQ country

United States

HQ region

North America

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Personnel, Operations, Infrastructure, Marketing or Sales, Technology or R&D

Revenue model

1. Custom Fiberglass Buildings and Shelters: Shelter Works manufactures custom-engineered, made-to-order fiberglass buildings and equipment shelters. Products are engineered to customer specifications and built to order. Revenue is generated from the sale of custom prefabricated shelters including standard options, customization options (HVAC, electrical, doors, floors), and specialty configurations (containment floors, explosion-proof packages).
2. Options and Accessories: Additional revenue from customizable options including wall/floor/roof configurations, heating/cooling systems, electrical packages, door hardware, skylights, windows, and specialized containment systems.
3. Specification and Design Services: Engineering assistance and specification writing services for customer projects. Sales engineers assist with design specifications and provide PE-stamped drawings and structural calculations.

Go-to-market motion2 records

Distribution channels4 records

Marketing channels7 records

Core offering

Shelter Works manufactures custom-engineered, made-to-order fiber-reinforced plastic (FRP) equipment shelters, enclosures, and buildings for industrial, municipal, and government customers. Each shelter is built to customer specifications using proprietary FiberBeam™ structural technology and FiberWrap™ seamless construction, with options for HVAC, electrical (including explosion-proof packages), doors, floors, containment basins, and specialty configurations. The company also provides engineering assistance, PE-stamped drawings, and specification writing services through its sales engineering team.

Product overview

Shelter Works manufactures custom-engineered fiberglass building and equipment shelter products using proprietary FiberBeam™ and FiberWrap™ technologies. The core product line consists of Fiberglass Shelters with FiberBeam™ Technology and Fiberglass Buildings for field equipment protection across water/wastewater, natural gas, energy, telecom, oil & gas, mining, and FAA/aviation industries. Specialized product variants include Electrical Buildings (E-Houses), SCADA System Shelters, Boiler Room Enclosures, Chemical Storage Buildings, and Fiberglass Pump Houses. The product ecosystem includes extensive options and accessories such as HVAC systems, electrical packages, door configurations, floors/bases, and containment floors. Additional services include a Specification Writer tool and portfolio of case studies demonstrating applications. All shelters are custom-engineered to order in any size or color, backed by a 25-year warranty, and designed for corrosion resistance, weather resistance, and minimal maintenance.

Differentiator

Problem solved

Functional benefit

Brands

• FiberBeam™: Proprietary technology used in Shelter Works shelters providing 'Built for Life' structural characteristics
• FiberWrap™

Products and services

• Custom Fiberglass Shelters Custom-engineered, made-to-order fiber-reinforced plastic (FRP) equipment shelters using proprietary FiberBeam™ and FiberWrap™ technologies, available in any size or color, for municipal, industrial, and government customers.
• Fiberglass Enclosures and Cabinets
• Electrical Buildings (E-Houses) Prefabricated fiberglass electrical buildings for protecting critical electrical equipment including backup power systems, battery storage, communications equipment, switchgear, motor control centers, SCADA systems, and variable frequency drives, with customizable HVAC, fire suppression, and security features.
• SCADA System Shelters Fiberglass shelters designed to house SCADA (Supervisory Control and Data Acquisition) systems for monitoring and controlling industrial processes in natural gas, water, wastewater, energy, oil & gas, and petroleum applications.
• Boiler Room Enclosures Fiberglass enclosures for boiler room applications including metering, chemical dosing, packaged boiler plants, electric boilers, electrical distribution, cooling towers, and geothermal pump systems, resistant to corrosion and extreme temperatures.
• Chemical Storage Buildings Fiberglass chemical storage buildings for chemical feed and storage applications, featuring acid corrosion-resistant construction, optional partition walls for separating chemicals, and secondary spill containment basins.
• Fiberglass Pump Houses Fiberglass pump house enclosures designed for water, wastewater, and industrial pumping applications, featuring corrosion resistance, insulation options, and customizable access points.
• Explosion-Proof Electrical Packages Electrical systems designed for hazardous locations meeting NEC Class I (gas/vapor), Class II (dust), and Class III (fibers/filings) requirements, including Division 1 and Division 2 specifications with appropriate lighting, fixtures, fittings, plugs, receptacles, control stations, and distribution panels.
• Containment Floors with Spill Basins Fiberglass emergency spill containment basin systems with elevated fiberglass grid flooring, designed for worst-case volume containment with options for side wall drains, bottom drains, or sump pump systems, suitable for aggressive chemicals with high-end resin options.
• Specification Writing and Design Assistance Services Engineering assistance and specification writing services for customer projects, delivered by sales engineers who support design specifications and provide PE-stamped drawings and structural calculations, complemented by the online Specification Writer tool for generating detailed bid package specifications.

Quantifiable outcome

• Lightweight construction allows single-day rooftop installation using standard crane and lifting rings
• +4 more outcomes

Named customers12 records

Segments8 records

Ideal customer profiles6 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Scale indicators5 records

Recent moves5 records

Expansion highlights4 records

Direct peers

• Strongwell Corporation: Manufacturer of pultruded and molded fiberglass (FRP) structural products, including structural shapes, grating, and building systems serving industrial, utility, and infrastructure markets with similar composite-material technology to Shelter Works.
• Enduro Composites: Manufacturer of fiberglass reinforced plastic products including structural shapes, panels, and fabricated assemblies used in chemical, water/wastewater, and oil & gas facilities — overlapping core verticals with Shelter Works.
• Fibergrate Composite Structures: Manufacturer of molded fiberglass grating, structural shapes, and architectural FRP products used in industrial facilities, chemical plants, and wastewater treatment — directly overlapping Shelter Works' vertical markets and material approach.
• Creative Pultrusions: Pultruded FRP products manufacturer serving industrial, utility, and infrastructure applications with structural profiles, grating, and custom composite fabrications — comparable custom FRP manufacturer for similar end-use environments.

Broad incumbents

• Easi-Set Industries: Producer of precast concrete buildings including utility, pump, and equipment shelters used by municipal water/wastewater and telecommunications customers — competes with Shelter Works in the same specification-driven market.
• Porta-King Building Systems: Custom prefabricated metal building manufacturer serving industrial, utility, and equipment enclosure applications; competes with Shelter Works on the prefab industrial shelter category.
• Oldcastle Infrastructure: A large CRH-owned building products platform offering precast concrete utility buildings, vaults, and enclosures that compete for the same municipal/utility shelter specifications as Shelter Works' FRP alternative.
• WillScot: Large public modular space provider offering mobile offices and modular buildings across industrial, commercial, and government markets; competes broadly for prefabricated equipment enclosure procurement budgets.
• CXT Inc. (L.B. Foster Company): Producer of precast concrete buildings and restroom structures marketed to national park, federal, and utility customers; competes with Shelter Works in the prefab concrete/shelter space for government and infrastructure buyers.

Emerging players

• Nema Enclosures: Manufacturer of fiberglass and metal NEMA-rated electrical enclosures for industrial and hazardous location applications; partial overlap with Shelter Works' explosion-proof electrical package and enclosure product lines.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/shelterworksstl
• LinkedInlinkedin.com/company/shelter-works

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 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 Shelter Works