Raths, Raths & Johnson, Inc. (RRJ), a national engineering, architecture, and forensics consulting firm, headquartered in Willowbrook, Ill., announced that Principal Sarah K. Flock has been appointed to the Executive Committee of the Air Barrier Association of America (ABAA), and Principal Dennis K. Johnson has been elected President of the Insulating Glass Certification Council (IGCC).

In May 2019, Sarah Flock was appointed to the Executive Committee of ABAA, a national trade organization serving the diverse members of the air barrier industry. She will serve as Second Vice Chair of the committee for a three-year term. She is member of the ABAA Board of Directors and currently serves as the Co-Chair of the Research Committee.

At its 2019 Annual Meeting in May, Dennis Johnson was elected President of the Insulating Glass Certification Council (IGCC) where he has served on the Board of Directors and provided dedicated service to the organization for almost 20 years. IGCC is an independent and impartial organization that assesses the conformance of sealed insulating glass units to the requirements of ASTM E2190 and by maintaining a balance of material suppliers, IG manufacturers, and public interest members focus on the means for obtaining quality performance in the fabrication of commercial and residential IGs. Under Dennis’ leadership, the IGCC Board and technical committees are well-positioned to move forward with its many technical and diverse initiatives.

Sarah K. Flock, NCARB, BECxP, CxA+BE
Sarah is a Principal of Raths, Raths & Johnson, Inc. with 17 years of architectural experience and recognized expertise in exterior wall systems' water leakage and condensation investigation and resolution, with a specialization in thermal performance and computational analysis of building enclosure systems and components. She consults in the areas of exterior wall investigations, thermal modeling, building enclosure consulting and commissioning, and litigation support and expert witness testimony of related moisture intrusion problems.

Sarah is active in several professional organizations and speaks and writes on building enclosure thermal performance and condensation issues across the industry. She serves on multiple ASTM International committees and is a member of the American Institute of Architects (AIA), Building Enclosures Council-Chicago (BEC-Chicago), Construction Specifications Institute (CSI), Exterior Design Institute (EDI), and American Society of Healthcare Engineering (ASHE). A licensed architect in several states, she is certified as a Building Enclosure Commissioning Process Provider (BECxP) and a Commissioning Authority + Building Enclosure (CxA+BE). (SFK photo attached)

Dennis K. Johnson
Dennis is an industry expert with a 45-year career as a technical leader in the investigation, repair design, and performance testing of exterior walls, fenestration systems, and glazing materials. His technical knowledge of facade systems and extensive background with the forensic analysis of building enclosures has contributed to his ability to develop practical approaches and solutions for the resolution of problems associated with non-performing systems and materials in order to achieve superior results for clients. A Principal at RRJ, he consults on significant facade projects regarding the performance of exterior wall designs and develops solutions to manage and control air, water, and vapor migration. He also reviews exterior wall designs for air infiltration, water penetration, and condensation performance issues and conducts on-site field testing and construction quality assurance measures for new buildings, as well as remediation and restoration of existing structures. He is a long-time member of the ASTM International.