Richard C. Ziegler

Senior Associate


Rick Ziegler is a building enclosure consultant with over a decade of broad-based experience in design, construction, and rehabilitation of existing and new buildings. Mr. Ziegler applies building science principles to design high-performance enclosure assemblies that consider the project’s specific climate and environmental loads. He designs, consults, and performs construction reviews of building enclosure systems for various building types, including high-rise hotels and multifamily, retail, healthcare, educational, and office buildings. Mr. Ziegler has also collaborated with developers and institutional owners to define performance standards and the associated verification process.



Building Science

  • Children’s Wisconsin Northwest Addition - Milwaukee, WI: Review of metal panel cladding attachments for thermal performance and thermal calculations
  • Petty Elementary School - Taft, TX: Hygrothermal evaluation of closed-cell spray polyurethane foam impact on moisture performance of a concrete floor slab over a crawlspace
  • Canyon Ranch Spa - Fort Worth, TX: Hygrothermal evaluation and design assistance of spa enclosure and exterior walls


Peer Review

  • Maple Terrace Residential Tower and Office Tower Expansion - Dallas, TX: Review of stone cladding, precast, window replacements, curtain wall, and roofing/waterproofing design
  • 924 E. Seventh Street - Austin, TX: Peer review of design documents related to window wall, concrete, roofing, and waterproofing
  • Frisco Square Phase III – Frisco, TX: Review of enclosure systems designs including the window, waterproofing, balconies, doors, and roofing


Facade Assessment

  • American Plaza - Waco, TX: Assessment and testing of exterior wall assemblies including masonry and curtain wall
  • Mercy Tower West - Fort Smith, AR: Assessment of building enclosure including brick masonry veneer, storefront, and curtain wall
  • Waco City Hall - Waco, TX: Assessment of historic limestone facade and development of restoration design concepts
  • Fort Worth Independent School District Administration Building - Fort Worth, TX: Assessment of cement plaster wall assemblies, roofing, and storefront windows to identify required repairs for building rehabilitation


Forensic Investigation

  • Heritage Trace Retail - Fort Worth, TX: Field review and testing to identify construction defects related to the cement plaster wall assemblies
  • Baylor Golf Facility - Waco, TX: Field review and testing to identify source of water intrusion at the terrace
  • Major National Bank - Coppell, TX: Field review and testing of storefront systems to determine sources of water intrusion and development of conceptual repair recommendations


Roofing and Waterproofing

  • Montessori Academy at Onesimo Hernandez - Dallas, TX: Roof consulting related to a roof replacement project including site evaluation and design recommendations
  • Christus Health Headquarters - Irving, TX: Review of design documents and provision of recommendations related to below-grade waterproofing design and specifications
  • Children’s Medical Center Roof Repairs - Dallas, TX - Assistance with the development of design documents for new coating and roof repairs


Building Enclosure Commissioning

  • Ohio State University, Wexner Medical Center - Columbus: Laboratory mock-up review, testing observations, and troubleshooting of unitized curtain wall system with insulating glass units and limestone panels
  • Major Retail Chain, Campus Fitness Center: Development of enclosure commissioning specification and testing procedures and review of mock-up design
Professional Affiliations

American Society of Heating, Refrigerating, and Air Conditioning Engineers (ASHRAE)
International Institute of Building Enclosure Consultants (IIBEC)


Professional Engineer in AZ, CO, TX, and UT
Registered Roof Consultant (RRC)
Registered Roof Observer (RRO)


Juniata College
Bachelor of Science, Engineering Physics, 2005