Four individuals within Wheaton Sprague Building Envelope’s engineering department have been promoted: Jeffrey Cook, Charles Shepard, Andrey Schuster and Andrew Vargo. The company also hired a new branch office leader and manager: Michael Kohler.

Cook was promoted to director of structural engineering practices. According to the announcement, he will be the technical go-to person for the structural engineering domain for building envelope engineering and consulting within the organization. Cook will continue to serve as a senior engineer and professional engineer (PE) in charge, working within the engineering department based at the company’s headquarters in Stow, Ohio, and servicing existing clientele.

Shepard was promoted to structural engineering manager for the company’s Stow branch office. He joined Wheaton Sprague in 2008, following several years with Urban Engineering in Pennsylvania, and many years with Harsh Engineering Services in Rootstown, Ohio. In this new role, Shepard will assume reporting responsibility for all staff of the Stow engineering team. Schuster was promoted from project
engineer II to senior engineer I, and has been with Wheaton Sprague since
2014. He obtained his Ohio PE in 2016.

As a senior engineer, he will work as a high-level technical specialist on structural engineering projects with minimal supervision, working through complex structural calculations and procedures and thinking creatively to solve problems for projects and clients. Schuster will be working to obtain additional state registrations to further support his role and WS clients.

Vargo has passed his professional engineering exam and registration is in process in the state of North Carolina. He is a 2013 civil engineering graduate from North Carolina State University and joined Wheaton Sprague in 2016 after a three-year position with American
Tower in Cary, N.C. With his registration, Vargo will move from a project engineer I to a project engineer II. The North Carolina branch office will continue to pursue additional state registrations for him once he has obtained his license.

Kohler is Wheaton Sprague Building Envelope’s new branch office leader and manager in charge of operations for the Stow office. He has held positions with PPG, Tremco Inc., Mar-Flex Building Products and Sherwin-Williams.

Linetec, an architectural metals finishing company, promoted Tammy Schroeder to marketing manager. Throughout her 19 years with the company, Schroeder has worked in various sales and marketing roles. Most recently, she held the role of senior marketing specialist for Linetec’s architectural coatings and services. Some of her current responsibilities include website designer, social media administrator, digital content manager, industry-facing public relations coordinator and educator, and technical article author.

Wojan Window & Door has promoted long-time sales representative Jeff Collis to regional manager of the Great Lakes region. Collis joined Wojan in 2012 and has been instrumental in its growth since then, according to the company. He has experience as a glazing business partner and also represented Wojan as an independent representative for a number of years before joining the company full-time. Collis will oversee all representatives and sales activity in Michigan and Ohio, initially. The company expects this newly-defined region to expand in the future.


Michelle Estes is the new regional architectural manager for Vitro Architectural Glass in south central Texas. Estes was most recently an architectural sales representative for Masco Coatings Group, which represents Behr Paint. Her territory includes Austin, Houston and San Antonio.

Estes spent 19 years at PPG Paints as the South Central Texas architectural representative, establishing working relationships with Vitro Glass representatives. Estes holds a bachelor of science degree in marketing from Kansas State University.

David Hill has been named Eastern territory sales manager of machinery and screens for Quanex Building Products. Hill has spent more than a decade with Quanex. In his new role, he will take on screen sales to help customers add new efficiency into their operations. He will continue to be responsible for equipment sales as well.

Soft Tech has created a new business development manager role based out of the company’s Florida office. It will be filled by Ray Imbrigiotta who has many years’ experience in sales and an understanding of how the use of technology facilitates success, according to the company.

Imbrigiotta has more than 25 years of major accounts sales experience with Xerox and Ricoh in hardware and information technology services. Previously, he owned and operated a hurricane impact window, door and shutter company in South Florida, Advanced Windows & Shutters. He has a State of Florida Glass & Glazing Contractors License.

Comings and Goings

Bobby Hart has retired from Billco’s washer assembly department after 44 years in the industry. He started at the company the day after his 18th birthday and did general labor in the shop—running errands, sweeping floors or whatever was needed.

Hart recalls that he started at the wage of $3.12/hour. After about a year doing general labor, he moved into assembly and that is where he spent his entire career at Billco. In Billco’s 70-year lifespan, Hart has seen, built and witnessed many of the company’s historical events.

“It is his attention to quality that he will be remembered by. He’s trained many people at Billco and trained them well, according to many. Although he is looking forward to his retirement, he will miss his friends, noting that many of them are closer than family to him,” reads a company statement.

Hart says he will likely find a part-time position doing something else he enjoys.

“Bobby Hart is a part of Billco as much as Billco is a part of him. We are honored that he chose to spend his career at Billco and wish him all the best in his retirement,” reads a company statement.

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