• Blogs

    What Really Matters for Air Barrier Materials

    ...supporting evidence-based decision-making. Read about what really matters for air barrier materials. At RDH’s August 2021 Building Science Live presentation, Jonathan Smegal shared some insights about airtightness gained through RDH’s...
  • News

    RDH’s 2025 Appointments: Celebrating Our New Leaders

    ...      Jonathan Smegal, P.Eng. | Associate Principal, Senior Engineer Jonathan specializes in laboratory research, forensic analysis, and consulting for litigation and insurance projects. His ability to develop solutions...
  • News

    Introducing RDH’s Newest Principals and Associates

    ...services for the building enclosure components of new construction projects. Eric works closely with the rest of the RDH team to provide building science recommendations and consulting services. Jonathan Tow...

Technical Expertise. Real-World Impact.