Jonathan D. Kovach

Associate Principal


Jonathan Kovach has broad-based experience in building enclosure condition assessments, design peer reviews, field testing, investigations of new and existing structures, repair design, and construction phase services (CPS) for various building types to address deterioration of building enclosure materials, components, and systems. Since joining WJE in 2008, he has provided professional services for numerous projects involving the investigation of distress conditions and water infiltration in various building enclosure systems, including brick masonry, stone, terra cotta, windows, curtain wall, skylights, metal wall panels, roofing, and waterproofing. Mr. Kovach is also experienced in the evaluation, stabilization, and repair design of masonry and stone claddings and in quality assurance for new construction projects based on lessons learned from existing building troubleshooting.


Building Enclosure Commissioning

  • A.J. Celebrezze Federal Building - Cleveland, OH: Building enclosure commissioning (BECx) of a dual-skin facade comprised of new unitized curtain wall over existing facade
  • Honda Transmission Manufacturing Facility - Russell’s Point, OH: BECx of new building expansion clad with metal wall panels
  • Iowa State University, Gerdin Business Building Expansion - Ames: BECx for a limestone and brick masonry clad building with aluminum window systems



  • Renaissance Cleveland Hotel - OH: Brick masonry and terra cotta inspection, stabilization, repair design, and restoration; redesign of terra cotta balustrade
  • Higbee Building - Cleveland, OH: Assessment of limestone and terra cotta cladding
  • Cleveland Metroparks Zoo RainForest - OH: Assessment of brick masonry and granite cladding
  • 30th Street Station - Philadelphia, PA: CPS for limestone cladding and cast-iron curtain wall repairs
  • Kenmore Plaza Apartments - Chicago, IL: Repair design and CPS for repointing and masonry repairs
  • Caleres Brown Shoe Company - Clayton, MO: Assessment and repair design of brick and limestone cladding


Stone Cladding

  • Cleveland Justice Center Complex - OH: Assessment and repair design of granite clad buildings
  • PNC Building - Cleveland, OH: CPS for travertine stabilization repairs
  • Ohio State University, Fisher Auditorium - Wooster: Investigation of limestone cladding


Windows/Curtain Walls/Skylights

  • Ohio State University, Knowlton Hall - Columbus: Evaluation of glazing restraint for curtain wall system
  • The Carlyle on the Lake - Lakewood, OH: Building-wide fenestration assessment, water infiltration testing, development of window replacement contract documents, and field quality assurance observations
  • Cleveland Justice Center Complex - Cleveland, OH: Investigation and water infiltration testing of a large atrium skylight


Water/Air Leakage Assessment

  • Cleveland Museum of Art - OH: Investigation of below-grade water infiltration; repair design and water testing of repairs
  • Ohio State University, Kottman Hall - Columbus: Investigation of water infiltration through brick cavity walls
  • UPMC Sports Performance Complex - Pittsburgh, PA: Water penetration testing of aluminum curtain wall and polycarbonate glazing systems
  • Westinghouse Corporate Headquarters - Cranberry Township, PA: Whole building air leakage test


Failure/Damage Investigations

  • Ohio State University, Agricultural Research and Development Center - Wooster: Campus-wide structural and building enclosure condition assessments due to tornado damage


Roofing and Waterproofing

  • Perry’s Victory and International Peace Memorial - Put-in-Bay, OH: Plaza waterproofing evaluation and inspection of temporary repairs
  • Large Medical Center - Northeast OH: Roof failure investigation, repair design, and CPS of replacement roof assemblies
Professional Affiliations

Association for Preservation Technology International Northwest Chapter
Building Enclosure Council
The Masonry Society


Professional (Civil) Engineer in WA
Professional Engineer in OH


Ohio University
Bachelor of Science, Civil Engineering, 2006

Lehigh University
Master of Science, Structural Engineering, 2008