Drew Tiemann is a Certified Fire Door Assembly Inspector (CFDAI) and a key figure in the commercial construction industry, particularly in Division 8 specifications, which encompass doors, frames, hardware, glazing, and access control systems. He is affiliated with LEEDING Architectural, a company known for its expertise in architectural openings and hardware solutions.​ Tiemann is an active contributor to professional discussions on LinkedIn, where he shares insights on best practices for Division 8 specifications.

In his article, “What, Why and How: Division 8 Specifications,” he emphasizes the importance of clear and up-to-date specifications to ensure project efficiency and compliance with safety and accessibility standards. He advocates for early collaboration among stakeholders, standardized hardware selections, and detailed hardware schedules to minimize project delays and costly revisions. ​

Beyond his professional endeavors, Tiemann is deeply involved in community activities. He serves as the Vice President of Falls City Little League in Texas, demonstrating his commitment to youth development and community engagement. ​ LinkedIn Falls City Little League Tiemann’s multifaceted involvement in both his professional field and community initiatives highlights his dedication to excellence and service.