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Karim Allana, PE, RRC, RWC, CEO, Principal

Karim P. Allana is the CEO and Founding Principal of Allana Buick & Bers, Inc. (ABB), a leading Architectural-Engineering firm specializing in building envelope and sustainable construction for new and rehabilitation projects. Mr. Allana has been in the A/E and construction fields for 35+ years, with a concentration on forensic analysis, design, and sustainable construction of roofing, waterproofing and building envelope systems. He has also acted as a consultant and expert witness in 500+ construction defect cases.

Mr. Allana earned a B.S. in Civil Engineering from Santa Clara University and is a licensed professional engineer in California, Hawaii, North Carolina, Nevada and Washington. He is a Registered Roof Consultant (RRC) and Registered Waterproofing Consultant (RWC) through IIBEC, Inc. He is a frequent speaker and presenter at professional forums.


Petersen Lambert, PE, BECxP, CxA+BE, Division Manager, Principal


Mr. Lambert is a Principal for Allana Buick & Bers (ABB), and is responsible for all projects in the Pacific Northwest. He provides building envelope, roofing, waterproofing, and exterior wall systems expertise for both existing buildings and new construction. He oversees project planning, production, and team and client management for the region. Mr. Lambert is also the lead technical expert for the Seattle office, providing quality control/quality assurance and construction administration services.


Mr. Lambert has been with ABB since 2001. Prior to opening the Seattle office, he opened and managed the Los Angeles office. His experience includes management of investigation, design, bid support, and construction administration and management for new construction and renovation projects. Mr. Lambert specializes in identifying and resolving complex waterproofing issues during construction.


In addition to being a subject matter expert, Petersen is an experienced presenter. His style of presenting is always well-received by his audiences


John Williams, NC Division Manager, Principal


Mr. Williams is a Division Manager and Principal at Allana Buick & Bers (ABB), responsible for the operations and oversight of all the North Carolina Division’s projects. He oversees project planning, production, team and client management. ABB’s projects focus on property condition assessments, due diligence investigations, peer review, construction administration, mechanical capital planning and replacement programs, assessments of building mechanical system operations, and energy projects.


Mr. Williams earned a B.S. in Electrical Engineering from United States Military Academy, West Point, New York and also received a MBA from Wake Forest University in Winston-Salem, North Carolina. He is a member of the American Society of Heating, Refrigerating and Air Conditioning Engineering (ASHRAE).

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