Areas of Expertise

We are a relationship-driven company that knows our employees make the difference in winning and retaining the clients we serve.  We have earned our reputation for quality, safety, and outstanding customer service in the business of performance contracting, fabrication/installation, industrial piping, service and building solutions and electrical services.

FabricationService &

Performance Contracting

We specialize in design-build, energy efficient renovations for any type of government, K-12 and postsecondary school buildings. These scopes can range from roofs, windows, HVAC systems, lighting and other specialized systems. By understanding our clients' needs, vision, challenges and facilities requirements, we help maximize energy and operational and capital cost avoidance dollars.

Performance Contracting Case StudiesSee More About Performance Contracting


No matter the size, scope or location, GRP|WEGMAN can speed any project to market at significant savings to our clients. Utilizing the latest in welding technology, we can handle pipe up to 80’ in length and 60” in diameter in addition to sheet metal fabrication and insulation blanket fabrication in our 21,600 square-foot environmentally controlled facility located in Bethalto, Illinois.

Fabrication Case Studies

Petrochemical Maintenance & Construction

Industrial customers trust GRP|WEGMAN to handle complex piping systems, high pressure/high temperature vessels and associated industrial equipment in a variety of capacities including: schedule driven plant turnarounds and scheduled and unscheduled plant maintenance.  We perform these services in refineries, electrical power generation plants, chemical plants, biofuel manufacturers, water treatment facilities, etc.

Petrochemical Case StudiesSee More About Petrochemical

Powerhouse Maintenance & Construction

Combining our comprehensive knowledge of construction and maintenance with our safety-driven work ethic has helped us create satisfied, repeat customers.  GRP-Wegman has extensive experience in a variety of powerhouse capacities:

  • Power Plant Maintenance
  • Forced Outages
  • Large Planned Outages
  • Small Boiler Repair
  • Small Boiler Maintenance
  • Tank Repair
  • R, PP, S Stamp Code Repairs
Boiler Case StudiesSee More About Powerhouse Maintenance and Construction

Service & HVAC/R Solutions

Offering a combined 150 years of HVAC and plumbing experience, GRP|WEGMAN provides preventive maintenance for industrial and commercial buildings, keeping them operating at top capacity. Other companies address symptoms. GRP|WEGMAN looks at the big picture, solving problems and offering preventive care.

Service & HVAC/R Case StudiesSee More About Service & HVAC/R


GRP|WEGMAN specializes in industrial, commercial, and institutional electrical construction and maintenance. Our services include construction, maintenance, high-voltage, low-voltage, engineering, design-build, pole line maintenance, electrical testing, camera, voice and data installations.

Electrical Case Studies