In 1952, International Decorators began as a painting contractor. Since then, the company has evolved into one of Northern Illinois’ largest Commercial, Industrial, and Residential wall, ceiling and painting contractors. We specialize in metal stud framing, drywall hanging and finishing, metal roof trusses, acoustical/specialty ceilings, interior/exterior painting, wall covering, as well as abrasive blasting and industrial painting.

Geotechnical and construction material testing for commercial, industrial, public and residential projects in Chicagoland area.

More than 100 years after it was founded, Olsson Roofing Company is still known for integrity, continuous improvement, customer service, and professionalism. With two locations, and more than 200 annual projects spanning the Midwest, Olsson Roofing Company has earned recognition as the largest commercial roofing company in the state of Illinois. We specialize in the maintenance, installation, and repair of commercial and industrial roofing systems, and architectural sheet metal.

Area Erectors Inc is a structural steel and precast erector based in Rockford, IL with branches in Rochelle, Chicago (Villa Park) and East Peoria, IL. We are an AISC and PCI Certified Erector.

Welcome to Nelson Insulation Company. We want to be your source for mechanical insulation services. As one of the largest commercial contractors in the Chicagoland area, we serve every major industry by providing viable, eco-friendly, code compliant solutions that save energy, money, and time. Every job is installed by the highly skilled professionals of Local 17 Heat and Frost Insulators. At Nelson Insulation, we take our responsibility to you, the industry, and the environment seriously in everything we do. Whether it’s a half day job or complex multi-million dollar engagement, your project will be managed to the highest standards by an experienced team of experts. Our growing client list is a living testimonial to the quality of work that we perform. For excellence in extreme time-frames, no one but Nelson delivers the unmatched capabilities and work force depth needed to ensure your success. FIRE-STOPPING Nelson Firestopping is now Nelson Thermal Insulation and Firestopping. We’ve grown. In addition to the expert firestopping and fire-safing installations you’re familiar with, we now offer thermal and acoustical building insulation resources from one trusted source – Nelson. Along with Through Penetration, Building Joint Firestopping, and Slab Edge Fire-safing, we offer expanded insulation capabilities including Curtain Wall Insulation, Spray Foam Insulation, Building Envelope, and Acoustical Insulation. As always, you’ll get top quality materials, responsive service, and competitive prices. Thermal insulation has always played a key role in energy savings and building comfort. With energy costs always on the rise, installation of thermal insulation helps deliver more ways to save money and prevent weather damage to all types of construction. Our team of experts will work with you to design solutions that help protect your structure from the unnecessary loss of energy, property, and life. With over 20 years of experience in building insulation and firestopping, Nelson is a leader in life safety and energy conservation.

We deliver engineered solutions in the areas of Open Protocol Systems Integration, Building Management Systems, Energy Solutions, Energy Conservation Measurements, Power Monitoring & Management, Access Control Systems, and HVAC Mechanical Services.

We’re passionate about water gardening and would love to share our story with you. Learn how Aquascape started from a 12-year old boy’s hobby and developed into an award-winning, multi-million dollar company. From our quality water gardening products to a LEED® (Leadership in Energy and Environmental Design) certified building, Aquascape plays an integral role in the world to enhance the environment and beautify landscapes across North America. Aquascape is proud to announce that St. Charles, Ill., home to Aquascape's main headquarters, Aqualand, adopted the title of Water Garden Capital of the World. The move came after the city counsel approved the idea proposed by Ed Beaulieu, vice president of field research and contractor development.

Althoff Industries was founded in 1961 by James Althoff to service residential heating and air-conditioning customers in the growing Northwest Chicago suburbs. These communities also had a growing need for skilled tradesmen to provide plumbing, piping and electrical services, and we soon expanded our offerings to meet them. As our reputation for the highest quality service grew, small businesses and light commercial clients joined our customer base. Over time, our dedication to total customer satisfaction has continued to fuel our growth, leading us to form long term relationships with some of the largest institutions and manufacturing companies in the area. In the 1990’s, we added our Building Automation Group to design and install computerized HVAC control systems. By remaining current with innovative technologies, we continue to provide outstanding value to our customers.

Corrosion Monitoring Services, Inc. (CMS) has been helping its customers assess, monitor, and repair air heaters since 1982. For nearly four decades, CMS personnel have inspected, repaired or rebuilt thousands of tubular air heaters (TAH) and other industrial equipment in North America and beyond its borders. In the process, the company has established a reputation for delivering quality products and services, on-time and on-budget. CMS offers a wide range of nondestructive inspection options for tubular air heaters, air to air heat exchangers, dust collectors, bag houses, gas/air ducts and ash hoppers that can identify existing tube failures and suggest both short term and long term repair solutions. Some of the many options include acoustic eye, pressure testing, and high angle rope access inspections to check difficult-to-reach or inaccessible areas. CMS Performance Services’ proprietary tools are designed to evaluate the impacts of current operations problems and provide opportunities for improvement based on proposed repairs or replacement. These resources can help evaluate the impacts of air heater performance related issues and provide technical estimations based on industry-accepted methods to help justify the cost of repairs. CMS repair methods are driven by the company’s solutions-oriented philosophy. The goal is not only to return equipment to as-built condition, but to apply its proprietary technologies to improve performance and service life, so that customers are able to realize measurable improvements. In addition, CMS offers alternatives to get customer back online quickly, like in-situ and partial tube repair. If air heaters aren't an issue, mobile teams can provide general mechanical maintenance, such as repair of expansion joints, mechanical dust collectors, and gas ducts, all performed by highly skilled staff with safety training. For more information about CMS and its rapid response inspection, repair, and performance services, visit cmsinc.us.

A nationally recognized leader in the field of historical building restoration since 1992, we construct custom restoration solutions for historical homes, churches, universities, courthouses, and state capitol buildings, including many buildings on the National Register of Historic Places. Skilled in both residential and commercial restoration, our full range of services include historical tile and slate roofing, architectural sheet metal, historical carpentry, historical masonry, gutters and downspouts, plus access to the largest inventory of HISTORICAL ROOFING MATERIALS in the U.S. — everything needed to restore your historical building, under one roof. Customers appreciate our unparalleled commitment to client success, our proven Monarch Elite Process, and our industry-leading safety program. Historical building specialists want to work with us because we take on challenges that no one else in the business can.

Since 1971, Eagle Concrete has been a trusted source for commercial concrete construction in the Chicagoland area. Principles of reliability, quality, service and safety remain at the foundation of every project. As a union contractor, typical projects in both the public and private markets include schools, apartment complexes, retail and industrial facilities, parks and stadiums, mid-rise buildings and many others. Pride is taken in maintaining a consistent high ethical standard, a comfortable work environment and a strong commitment to every employee. Eagle Concrete will continue to invest in improving efficiency and streamlining operations to allow for further personal development and company-wide growth. Eagle Concrete employs a staff of industry-leading professionals that assist our customers through every phase of their project. By maintaining accessibility, flexibility and responsiveness, our clients remain confident in knowing that all services will be performed above industry standards for each of their unique needs. Accommodating our customers’ budgets and schedules, staying informed of the latest industry technologies and materials, and investing in new equipment has allowed Eagle Concrete to develop a repeat customer base and a reputation as a well-established and respected Concrete contractor. Our Services • Concrete Foundations • Interior Flatwork • Structural Concrete • Concrete Paving & Curbs • Site Concrete

AMERICAN DEMOLITION CORPORATION is one of the Midwest’s leading demolition and environmental remediation companies with the proven professionalism, experience, resources and knowledge to successfully manage all types of building, structure or facility projects. Since 1989, we’ve helped private businesses, public institutions and government agencies nationwide “break into the future” by maximizing their asset potential.