Technical clarity and practical solutions
Raths, Raths & Johnson, Inc. is a nationally recognized engineering, architecture, and forensics consulting practice headquartered in Willowbrook, Illinois. Founded in 1966, it specializes in building enclosure consulting, structural engineering investigations, and field and laboratory testing for all building types and structures. It serves owners, architects, contractors, and engineers with technical analysis, peer reviews, repair designs, and litigation support.
Kurt HoigardPresident
Sarah FlockVice President
Patrick ReicherPrincipal
Lurita McIntosh BlankPrincipal
George MulhollandPrincipal
Brian LammertAssociate Principal
Prevention and solution of building enclosure performance problems, focusing on the design, construction, and rehabilitation of the building envelope.
Forensic structural, architectural, and mechanical investigations covering performance assessment, failure analysis, and repair design.
In-house evaluation services utilizing standard ASTM and AAMA testing protocols alongside custom-developed testing programs.
Technical support for construction projects and construction-related defects, including contractor support and assembly reviews.
Expert witness testimony and forensic support for disputes involving building failures, enclosures, and structural issues.
Commercial · Education · Healthcare · Historic Preservation · Hospitality · Industrial · Manufacturing · Parking · Government · Sports & Recreation · Residential · Transportation
Springfield, IL · Historic Preservation · Client: PNC Bank
An exterior facade repair project in the Central Springfield Historic District in Springfield, Illinois, addressing unanticipated conditions during restoration.
Bethesda, MD · Government · Client: The Nuclear Regulatory Commission
A forensic investigation to detect mild steel hairpin anchors in the stone cladding of an 18-story marble- and granite-clad building.