Contact Information

519 342 4731

167 Lexington Court #6
Waterloo, ON N2J 4R9

Aaron Grin | M.A.Sc., P.Eng.

Principal, Building Science Specialist

Aaron Grin | M.A.Sc., P.Eng.

Principal, Building Science Specialist

Aaron is a Professional Engineer, building scientist, and researcher with an academic background in building science and structural engineering. His creative problem-solving skills and extensive knowledge of building systems and materials allow him to effectively address challenging questions and find practical solutions.

Aaron is the manager of the RDH Building Science Laboratories (RDH BSL) facility in Waterloo, where he oversees building enclosure performance-related tests and experiments. As part of his role, he works with a range of clients to conduct product research and development, forensic investigations, and building enclosure performance testing.

He has also conducted a range of building enclosure assessments and targeted investigations on Existing Buildings projects. He has extensive experience in identifying performance problems on structures that are subject to cold and moist weather conditions.

Aaron is the primary designer of a custom climate simulator and the project manager facilitating its construction and installation at George Brown College. In addition, he is a key member of the team that designed, constructed, and now operates RDH BSL’s Thermal Metric Hot Box, an advanced double-guarded hot box that is being used to refine approaches to thermal performance measurement.

He graduated from the University of Waterloo, where he obtained his bachelor of structural engineering and master of building engineering.

Chris Schumacher | M.A.Sc.

Principal, Senior Building Science Specialist

Chris Schumacher | M.A.Sc.

Principal, Senior Building Science Specialist

Chris is recognized as an expert in the field of building monitoring as well as enclosure and building systems testing. Chris’s formal education in architecture and engineering is balanced by two decades of building enclosure design and testing experience.

Chris oversees much of the work done through RDH Building Science Laboratories, and he regularly consults on the development of experimental test programs for academic institutions, building product manufacturers, and government agencies.

Examples of Chris’s research work include the Thermal Metric Project, a multiyear investigation of thermal performance in full-scale wall assemblies; and the development of an apparatus and test method that measures dense-pack airflow resistance to support the development of the Building Performance Institute’s test standard BPI-103 and material standard BPI-102.

Before joining RDH, Chris was a founding principal of Building Science Consulting Inc. and a founding partner of Balanced Solutions Inc., an innovative Canadian building science RD&D consultancy.

Jonathan Smegal | M.A.Sc.

Associate, Senior Project Manager

Jonathan Smegal | M.A.Sc.

Associate, Senior Project Manager

Based in Waterloo, Jonathan is an important part of our Building Science Laboratories team. He regularly leads laboratory research, forensic analysis of building failures, hygrothermal modeling, and field monitoring of building enclosure performance.

A trusted resource, Jonathan has managed more than a dozen full-scale field tests of wall and roof performance in various locations throughout North America. He has also been involved with numerous new construction site audits for residential and commercial construction, from the design phase through to the final walk-through.

In 2007, Jonathan completed his master’s thesis on Drainage in Small Cavities in Wall Systems as part of the Building Engineering Group at the University of Waterloo. This research has been published in various forms, and he presented it at the Alaska Building Science Network conference and the 11th Canadian Conference on Building Science and Technology.

Dr. John Straube | PhD, P.Eng.

Principal, Senior Building Science Specialist

Dr. John Straube | PhD, P.Eng.

Principal, Senior Building Science Specialist

A prominent figure throughout North America, Dr. Straube is an influential and driving force in the industry. Well-known in a variety of building science and research circles, he helps guide the direction of RDH and is seen as a mentor to all levels of staff.

He has broad experience in the building industry and is considered an international expert, having been involved in the design, construction, repair, and restoration of buildings in Canada, the United States, Europe, Asia, and the Caribbean.

Dr. Straube is also known for his academic contributions as an Associate Professor in the Department of Civil Engineering and the School of Architecture at the University of Waterloo, where he teaches courses in structural design, material science, and building science to both disciplines.

Dörken Systems Research + Development Study

We undertook a research and product development study to assist our client, Dörken Systems (then Cosella-Dörken), in developing best practices for window rough opening preparation and window installation using their DELTA®-VENT SA membrane, DELTA®-FLASH, and other products.

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Toronto Community Housing ReSet Energy Program

As a building ages, the building owner is presented with opportunities to improve the building’s energy efficiency through renewal or rehabilitation.

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