ELFI Wall System began in 2002 as a manufacturer of steel-studded, prefabricated walls. Within a year we expanded our market focus by integrating other high-performance, superior insulation products into our offering. This enabled us to create a tight exterior building envelope that surpasses our competitors by a wide margin.
We now combine ICF – Insulated Concrete Forms with light-gauge steel floor joists, ELFI exterior walls, light-gauge steel roofing trusses, radiant-barrier insulation and other products. With this combination, we custom-build commercial, residential, and industrial structures with the highest energy efficiency ratings (HVAC) available. Combining ELFI’s technologies with alternative energy sources (geo-thermal, solar, and wind), enables us to construct a true zero-energy home – today, not far off in the future.
Demand for ELFI’s building technology has crossed our borders and we now work with partners in Asia, Africa, and Central America to design and build manufacturing/assembly plants in-country, enabling real estate and construction entrepreneurs to import ELFI technology to their countries. We design and procure the needed equipment, we assist with site selection, we design and supervise construction of the facility, and we train the managers and employees.
George Modrovic is the founding and managing partner of the ELFI LLC, has a broad technical background and eight years experience with this very product – prefabricated wall system. His formal education is credited to the Slovak Institute of Technology and continued in the U.S. through advanced studies in economics, sales, and management. Mr. Modrovic currently serves on the Educational and Research Committee of the USGBC, Chicago Chapter. George is a naturalized US citizen, who has been living in the Chicago area since 1980 with his wife and two children.
Harvey Bergholz
Business Strategy Development
Harvey Bergholz began his career in 1970 with the Hay Associates after completing a Master's Degree at Northwestern University. He opened his own shop, Jeslen Corporation, in 1974. Harvey resides in Chicago, is married, and has two children.
Anthony Haynes
Governmental Procurement
Mr. Haynes provides expertise as an international trade agent and government sales representative to the company. He has experience as a U.S. Army veteran and previously worked for the Veterans Administration, and has successfully secured government contracts for private industries. He is a member of the World Trade Center Illinois, has an honorary doctorate degree in divinity and is the Assistant Pastor of Traveler’s Rest Spiritual Church.
William Lada
International Business Development
During his time at the B.C. Fastener Products company, Bill personally grew it into a medium-sized manufacturing firm with millions of dollars in annual sales. His resume also includes a five-year tenure with the World Trade Center (WTC), as Director of Membership. Skilled in identifying and coordinating business opportunities, his responsibilities included networking between business sectors and geographic areas. Bill’s 12 year tenure as coach of his community high school cross country and track teams produced three state titles. He resides in McHenry, Illinois with his wife of 30 years and their four children.
Timothy Heppner
Manufacturing Operation
Over a period of 20 years Timothy Heppner has developed broad technical expertise in manufacturing as well as green residential construction. Tim’s tool & dye experience coupled with his tenure as President of Jet Cutting Service, manufacturer of steel for the CNC industry, has been instrumental in his successful career in green building. Utilizing his background as independent master carpenter and general contractor, Timothy took on the challenge of building the greenest home in Chicago and has now garnered accolades in the field of green residential construction. In addition, his experience as a RESNET trainer has deepened his understanding of energy efficiency and has intensified his appreciation for green building materials.
