HOUSTON, TEXAS — January 5, 2026 — Griesenbeck Architectural Products, Inc. (GAP) is pleased to announce that Brian Groff and Sheila Jackson have become equity partners in the company, effective January 1, 2026.
Groff will continue in his role as Vice President + Partner, Sales & Estimating, and Jackson will continue as Vice President + Partner, Finance & Administration.
“This partnership recognizes Brian and Sheila’s 22+ years of service and the countless contributions they’ve made to Griesenbeck’s growth and success,” said Tanner Spears, President of Griesenbeck Architectural Products. “It is also an important step that reinforces leadership continuity and long-term stability for our employees, customers, and manufacturing partners. I’m personally grateful for their loyalty, dedication, and sacrifice, and I’m proud to call them partners as we continue building the future of Griesenbeck together.”
The announcement comes as Griesenbeck Architectural Products celebrates 60 years in business, marking a significant milestone in the company’s history. The addition of Groff and Jackson as equity partners reflects the company’s long-standing commitment to investing in its people and ensuring continuity for the future.
Brian Groff
Brian Groff oversees preconstruction, estimating, architectural promotion, service sales, marketing, and the company’s manufacturer representative agency, Griesenbeck Sales Group. With more than 25 years in the Houston construction market, Groff has played a pivotal role in expanding the company’s market presence and guiding complex projects from concept through completion. Groff holds a Bachelor of Science in Construction Science from Texas A&M University. He is actively involved in industry organizations, including Associated General Contractors (AGC) and Associated Builders and Contractors (ABC), and serves on the board of the American Subcontractors Association – Houston Chapter.
Sheila Jackson
Sheila Jackson joined the company during a critical period of transition and has remained instrumental in strengthening internal controls, financial reporting, and Griesenbeck’s administrative infrastructure. As Vice President of Finance & Administration, she oversees finance, accounting, payroll, employee benefits, insurance, and corporate administration. Her leadership has helped drive major operational initiatives and is widely respected for its focus on stewardship, accountability, and Griesenbeck’s people-first culture. Jackson holds a Bachelor of Business Administration in Accounting from Sam Houston State University and is an active member of the Construction Financial Management Association (CFMA).
As the company looks ahead, Griesenbeck remains grounded in its purpose: the work done today has a lasting impact on the community tomorrow—creating opportunities for its people, delivering value to customers through excellence, and helping create better spaces for people to live, work, worship, learn, and heal. This milestone also reinforces the company’s commitment to leaving People, Products, and Projects better than they were found.
Griesenbeck Architectural Products, Inc. congratulates Brian Groff and Sheila Jackson on this well-deserved milestone and looks forward to their continued leadership and partnership.
About Griesenbeck Architectural Products, Inc.
Griesenbeck Architectural Products, Inc. (“GAP”) is a Houston-based specialty trade subcontractor serving the Southeast Texas commercial construction community for more than 60 years. GAP is a value-added distributor of architectural solutions focused on products that support Daylighting, Open Space Design, and Division 10 Building Specialties. The company provides architectural design assistance, turnkey installation, and service and maintenance for the products it represents. Learn more at griesenbeck.com.
Brian Groff, Vice President + Partner, Sales & Estimating
