James Bourget | ABET, RRO®

Principal, Construction Specialist

James Bourget | ABET, RRO®

Principal, Construction Specialist

James has over 30 years of industry experience, specializing in condition assessments, design and detail development, and field review on Existing Buildings projects.

As an approved roof inspector with the Roofing Contractors Association of British Columbia, James has developed expertise in the investigation, design, and field review of complex and specialty roof renewal and replacement projects. Over the years, he has established a multifaceted skill set and familiarity with various trades’ practices, including masonry, carpentry, concrete finishing, painting, and plastering.

As part of an initiative to support the implementation of the BC Step Code, James delivers hands-on airtightness training to builders and contractors. He also shares his knowledge of the building enclosure as an instructor at the British Columbia Institute of Technology.

Before joining RDH in 2003, James also worked in the roofing and architectural sheet metal industry and studied zinc-clad installations at the RHEINZINK of Canada training institute.

Robert Bombino | MS, PE (WA, MA)

President, Senior Building Science Specialist

Robert Bombino | MS, PE (WA, MA)

President, Senior Building Science Specialist

Robert is the President of RDH, responsible for providing executive leadership and managing the company’s growth. Committed to achieving RDH’s Vision, his passion is driving strategic initiatives and developing new approaches to deliver and broaden our services.

Robert is also a Senior Building Science Specialist and an industry leader in evaluating the design and performance of building enclosure systems, with extensive experience across the United States and Canada. He has focused his career on both enclosure rehabilitation of Existing Buildings and the design and construction of New Buildings projects. He also provides his expertise and draws on his experience for litigation projects. His ability to understand the needs and expectations of our clients informs his approach to managing RDH’s growth.

Robert holds a master of architectural engineering from Pennsylvania State University and is a registered Professional Engineer in both Washington and Massachusetts.

Robin Breuer | AScT, RRO®

Associate, Senior Project Manager

Robin Breuer | AScT, RRO®

Associate, Senior Project Manager

Robin joined RDH in 1998 and began his career as part of the team in Vancouver. He is now responsible for supporting the growth and success of developments in North Vancouver Island.

Robin’s technical skill set, along with his ability to communicate with clients and contractors, has made him an effective project manager. He manages a variety of New Buildings and Existing Buildings projects, and he possesses exceptional expertise in the review and implementation of intricate building enclosure systems.

While working in Vancouver, Robin was involved in the completion of some of the city’s most innovative and groundbreaking buildings at the time, including the Fairmont Pacific Rim and Shangri-La mixed-use towers.

More recently, Robin’s expertise has been shared across a range of unique projects, such as the development of the Nanaimo Passive House.

Bailey Brown | MS, PE

Associate, Senior Project Engineer

Bailey Brown | MS, PE

Associate, Senior Project Engineer

Bailey is a Senior Project Engineer who is recognized for her ability to communicate industry best practices, as well as her ingenuity to apply these practices to buildings throughout the Northwest.

As an author of various leading guides and bulletins, Bailey communicates technical topics to a range of audiences. She has both authored and contributed to numerous industry publications across the United States. One example of her work is the recently published Masonry Systems Guide: Northwest Edition.

Bailey also consults on the design and constructability of New Buildings projects. She regularly performs thermal and hygrothermal analyses of building enclosure systems and advises on energy code compliance and design throughout various project phases.

Bailey also serves as the leader of our Technical Communications team, where she provides guidance and coaching to a number of design and technical staff.

Tim Bryant | ABET, RRO®

Associate, Senior Project Technologist

Tim Bryant | ABET, RRO®

Associate, Senior Project Technologist

As a Senior Project Technologist, Tim applies his technical understanding of the building enclosure to support the design and review of an array of New Buildings projects.

Tim’s skills have been developed over 20-plus years in the construction industry. He has worked as a building enclosure consultant, a carpenter, and a foreman on single-family dwelling construction projects. He also has extensive experience in concrete construction for both residential and commercial architectural formwork projects.

Tim is a graduate of the British Columbia Institute of Technology (BCIT) and is now an instructor for BCIT’s Architectural and Building Technology certificate. He is relied upon for his experience in applying building science theory to support practical design and construction decisions.

Eric Catania | M.Eng., P.Eng., BEMP, CPHD, LEED AP BD+C, PHI Accredited Passive House Certifier

Associate, Senior Energy and Sustainability Analyst

Eric Catania | M.Eng., P.Eng., BEMP, CPHD, LEED AP BD+C, PHI Accredited Passive House Certifier

Associate, Senior Energy and Sustainability Analyst

As a Senior Energy and Sustainability Analyst, Eric utilizes his passion for energy modeling and his background in integrated building design to improve the energy efficiency of buildings.

With over 10 years of experience, he specializes in the simulation and evaluation of energy efficiency measures and has experience in conducting energy audits and assessing facilities for retrofit potential. He has developed energy efficiency strategies for a variety of projects, including health care facilities, sporting complexes, and commercial and residential buildings that pose energy consumption challenges.

Eric holds multiple certifications, including being an accredited Passive House Certifier and Designer, a LEED Accredited Professional, and an Associate Member of ASHRAE. His ability to provide energy-focused building design solutions makes him an asset to any energy and sustainability project.

Brittany Coughlin | P.Eng., BEMP, CPHC, LEED AP

Principal, Energy and Sustainability Specialist

Brittany Coughlin | P.Eng., BEMP, CPHC, LEED AP

Principal, Energy and Sustainability Specialist

Brittany’s focus has always been on designing buildings with an emphasis on energy conservation and efficiency. She is known throughout British Columbia for her contributions to the province’s leading energy projects. Along with her role as an Energy and Sustainability Specialist, she is the Co-Regional Manager of RDH’s Vancouver office.

Brittany’s goal is to assist clients in improving the energy efficiency of their buildings to realize measurable savings and reduce environmental impacts. Her work includes energy assessments, energy studies, and whole-building energy modeling.

Brittany shares her understanding and expertise at conferences across North America on a variety of topics related to energy consumption and conservation in buildings. Along with an impressive portfolio of Passive House projects, she also led the City of Vancouver’s High-Rise Passive House Feasibility Study.

Brittany started with the company as a co-op student and gained a broad understanding of RDH’s practice areas while on her way to becoming a Principal.

Marcus Dell | M.A.Sc., P.Eng.

Principal, Senior Building Science Specialist

Marcus Dell | M.A.Sc., P.Eng.

Principal, Senior Building Science Specialist

Marcus is a Professional Engineer who specializes in finding practical solutions to building enclosure problems. He is one of the three co-founders who established RDH in 1997.

With over 30 years of industry experience and 20 years with RDH, Marcus’ work includes complex project delivery for some of the largest institutions and iconic buildings in North America.

Marcus assisted in a project to study the performance of building enclosure assemblies and details in the high-rise building stock in the Lower Mainland of British Columbia. His findings were well received and resulted in an invitation by the Washington State Senate to participate in a task force that brought about substantive changes to the Washington State Condominium Act.

Throughout his career, Marcus has earned a reputation as a knowledgeable and engaging speaker. He has been invited to present for many industry bodies, including the British Columbia Building Envelope Council, the Masonry Contractors Association, and the Canada Mortgage and Housing Corporation.

Paul Duffy | B.Sc.

Associate, Senior Project Manager

Paul Duffy | B.Sc.

Associate, Senior Project Manager

Paul has a proven track record during his time directing RDH’s construction management operations in both Seattle and Portland.

He takes a client-first approach that allows him to build positive relationships with building owners and project stakeholders. His responsibilities usually span a project’s entire scope, including managing permitting and entitlements, estimating and reviewing drawings, and evaluating details for constructability.

As a veteran of the construction industry in the Northwest, Paul has built a reputation for selecting and leading design and construction teams to produce projects that meet client expectations and maintain their budgets.

Paul is also a member of the Seattle Building Enclosure Council and the Past Chair of the City of Kirkland Design Review Board.

Jason Dunn | B.Arch.Sc.

Principal, Senior Project Manager

Jason Dunn | B.Arch.Sc.

Principal, Senior Project Manager

With over 10 years with our Existing Buildings team, Jason has risen to the role of Senior Project Manager and Principal. His leadership qualities help him manage a variety of technical staff.

Jason’s experience in the repair, renewal, and rehabilitation of existing buildings has allowed him to develop a strong understanding of the challenges that owners face when it comes to building maintenance.

Jason coordinates with building owners to provide a variety of services, including building enclosure condition assessments that require investigative field testing, coordination of drawings and specifications, preparation of working budgets, and bidding of the work to contractors. He also is involved in producing depreciation reports and communicating recommendations to a variety of building owner groups.

Jason holds positions on both the British Columbia and Ontario Building Envelope Councils.

Graham Finch | Dipl.T., M.A.Sc., P.Eng.

Principal, Senior Building Science Specialist

Graham Finch | Dipl.T., M.A.Sc., P.Eng.

Principal, Senior Building Science Specialist

Graham works across a wide spectrum of RDH’s core practice areas and is directly involved with New Buildings projects, Existing Buildings investigation work, and research related to building materials and building enclosures across North America.

He regularly works with building product manufacturers and other clients on product research and development, performance monitoring, forensic investigations, and field testing. He also works closely with architects and developers to support the design of high-performance building enclosures and façade systems. Graham is directly involved with the majority of RDH’s mass timber and high-rise wood building projects and instrumental in leading industry research, risk management, and façade development for these new wood buildings.

Graham is an industry leader in measuring, evaluating, and modeling of the thermal and hygrothermal performance of building enclosure systems. His master’s degree research and thesis focused on the in-service performance of rainscreen wall assemblies in the Pacific Northwest, and the research has resulted in several publications and practical recommendations for the construction industry.

He is a leader in knowledge sharing and is regularly invited to present at conferences and speaking opportunities around North America on a range of building science topics. He also contributes to the education of the industry through the development and delivery of best practice guidelines and bulletins.

Originally from Vancouver Island, Graham returned to Victoria after working out of the Vancouver office for over a decade.

Chris George | Architectural Technologist AIBC

Associate, Construction Project Manager

Chris George | Architectural Technologist AIBC

Associate, Construction Project Manager

Chris’s technical understanding of building science combined with his project management skills make him an important resource for any enclosure renewal project.

Throughout each project phase, Chris focuses on ensuring that design and construction are implemented to meet the client’s expectations.
With over 10 years of experience, Chris coordinates all phases of a project, working from initial client meetings to project close-out, using traditional general contractor or construction management implementation methods.

Although based in Victoria, Chris has developed a diverse portfolio of projects throughout Vancouver Island and the Lower Mainland of British Columbia.

Tony Guillard | Dipl.T.

Associate, Senior Building Science Technologist

Tony Guillard | Dipl.T.

Associate, Senior Building Science Technologist

Tony is a practical and hands-on Senior Building Science Technologist with extensive experience in the field. He is regularly involved in targeted investigations and reviews of performance issues regarding building enclosure assemblies.

Tony has been working in the consulting sector of the construction industry since he joined RDH in 1999. He has a strong understanding of building science technology as well as experience in the practical application of this technology.

In 2008, Tony spent one year as a full-time RDH field representative during construction of the Honua Kai Resort in Hawaii.

Harvey Goodman | P.Eng.

Building Science Specialist

Harvey Goodman | P.Eng.

Building Science Specialist

Harvey’s extensive experience in building enclosure consulting and project management made him an ideal manager for the 2006 development of our Courtenay office. He plays a vital role in the full range of consulting services RDH provides to the north and central regions of Vancouver Island.

Harvey has pursued a career specializing in construction-related services, including positions as a site engineer, structural designer, construction manager, and project manager. With that background as a basis, he began to provide building enclosure engineering services in 1990.

In addition to project management services, Harvey provides services such as condition assessments, building enclosure rehabilitation and renewals, warranty reviews, and litigation support. He has built a strong rapport with building owners, contractors, building officials, and design consultants across North Vancouver Island.

Harvey is a University of British Columbia alumni and has been a registered Professional Engineer in British Columbia since 1977.

Sarah Gray | M.Sc., P.Eng., CAHP

Principal, Building Science Specialist

Sarah Gray | M.Sc., P.Eng., CAHP

Principal, Building Science Specialist

Sarah is a Building Science Specialist whose passion lies in the sensitive repair of historic buildings. Her portfolio includes an array of iconic buildings, including the Confederation Life Building and Commerce Court North, both located in Toronto where she has worked for over 15 years.

Her primary focus is on the evaluation and exterior rehabilitation of Existing Buildings and their assemblies, with work in the commercial, residential, and institutional sectors. She has worked on the design and construction review of deep energy retrofit projects for older residential towers.

Sarah also contributes to building enclosure design for New Buildings projects as well as building enclosure commissioning projects, where she provides insight on design, energy, and durability requirements.

After attending the University of Cincinnati to complete her bachelor of science in civil engineering, Sarah achieved her master of science in historic preservation at the University of Pennsylvania. She has served on the Board of the Canadian Association of Heritage Professionals and is currently a peer reviewer for the Association of Preservation Technology’s APT Bulletin.

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.

Gloria Handyside | BA

Associate, Human Resources Manager

Gloria Handyside | BA

Associate, Human Resources Manager

Gloria is a Human Resources Manager with 10 years of experience in adapting and implementing human resources policies and practices to support a culture of continuous learning and development.

Gloria provides support to over 250 staff members across our 9 offices. She is responsible for overseeing the integration of new staff and working with employees to create a positive work environment.

Since joining RDH in 2013, she has played a key role in nurturing the company’s values-driven culture and advancing human resources strategies in support of the company’s leadership and growth objectives.

James Higgins | AScT

Associate, Building Science Technologist

James Higgins | AScT

Associate, Building Science Technologist

James works across several groups at RDH, from research and investigation with Building Science Laboratories (RDH BSL) to building enclosure design and construction field review on our New Buildings team.

James combines his theoretical expertise with a practical approach to solving complex design and construction problems. As a leading member of the RDH Building Science Laboratories team, he regularly works with manufacturers as well as government and industry organizations on product development, materials testing, and industry guidance. He has been the lead author of several of BC Housing’s guideline documents, include the Illustrated Guide – Achieving Airtight Buildings.

James also provides field review and testing services on New Buildings projects. He is responsible for reviewing and testing various aspects of the building enclosure systems for high-profile projects in British Columbia, including the University of British Columbia’s Brock Commons.

James completed a co-op term and research project with RDH as part of the completion of his education at the British Columbia Institute of Technology before joining RDH full-time. He is now relied upon as a resource by staff throughout the company.

Brian Hubbs | P.Eng.

Principal, Senior Building Science Specialist

Brian Hubbs | P.Eng.

Principal, Senior Building Science Specialist

Brian is recognized as a practical engineer and researcher who delivers innovative solutions. He is one of the three co-founders of RDH and has a unique blend of theoretical and hands-on knowledge gained from completing hundreds of projects across RDH’s various practice areas.

Brian’s experience includes work on both high- and low-rise commercial, institutional, and residential projects in many geographic locations and in virtually all climatic regions in North America.

A key member of any design team, Brian specializes in façade engineering and is regularly involved in the design, testing, and construction of unique and complex building façades. He is often asked by clients to test and review various enclosure systems manufactured around the world.

An engaging and vibrant presenter, Brian regularly speaks at seminars, conferences, and universities on a range of building science topics. As one of the key contributors to the evolution of building enclosure technology in British Columbia, he has led landmark policy, guideline, and research initiatives.

Alexander (Sasha) Itsekson | SE, LEED AP

Principal, Façade Structural Specialist

Alexander (Sasha) Itsekson | SE, LEED AP

Principal, Façade Structural Specialist

Sasha is a Façade Structural Specialist with 30 years of experience working on a wide range of structural systems and building facades. He has provided his expertise on a number of high-profile projects in the San Francisco Bay Area, including the Oakland Cathedral and Sutter Hospital.

Sasha is often called upon to review the structural design of complex glazing systems and to provide structural evaluations and assessments of buildings. He also conducts forensic investigations of structural failures and designs solutions for building repairs.

Sasha uses an in-depth understanding of how seismic activity affects the structural integrity of buildings to provide earthquake risk analysis and seismic retrofits to existing buildings. He is a recognized Safety Assessment Program (SAP) Evaluator for the State of California Office of Emergency Services and is designated to perform rapid assessments of building safety in the wake of an emergency.

As well as being a LEED Accredited Professional (LEED AP), Sasha is a qualified Structural Engineer (SE) in 12 states throughout the U.S., including California, Washington, Oregon, and Nevada.

Al Jaugelis | B.Sc.Arch.

Senior Fenestration Specialist

Al Jaugelis | B.Sc.Arch.

Senior Fenestration Specialist

Al has a comprehensive understanding of the performance, building code, and regulatory issues applicable to commercial and residential glazing in North America.

He is a recognized authority on the North American Fenestration Standard (NAFS, formerly AAMA 101) and helps manufacturer clients to develop test programs and resolve regulatory and code compliance challenges.

Al shares his knowledge by actively participating in industry associations and technical committees, including the Natural Resources Canada (NRCan) Energy Efficient Fenestration Steering Committee and the CSA A440 Committee on Performance Standards for Windows.

Al is also a recognized conference speaker and is the author of the NAFS in Canada blog on RDH.com. He has written or contributed significantly to the following publications:

  • An Architect’s Guide to NAFS: Using the North American Fenestration Standard in Canada (RDH)
  • Reference Procedure for Simulating Spandrel U-Factors
  • Reference Methodology for Computing Window Performance Values for Use in the Passive House Planning
  • Package (a report funded by the BC Innovative Clean Energy (ICE) Fund)
  • Best Practices for Window and Door Replacement in Wood-Frame Buildings (BC Housing)

Steve Kemp | M.A.Sc., P.Eng., LEED AP BD+C, LEED Fellow

Principal, Senior Energy and Sustainability Specialist

Steve Kemp | M.A.Sc., P.Eng., LEED AP BD+C, LEED Fellow

Principal, Senior Energy and Sustainability Specialist

As the head of RDH’s Energy & Sustainability services, Steve drives energy-related initiatives and explores avenues for growth within this emerging practice area.
Steve is renowned as one of Canada’s top energy efficiency experts. He works with architects and developers to lay the foundations for sustainable and high-performance buildings. He is skilled in numerous energy technologies, including geothermal energy, smart lighting control, solar power generation, solar thermal, energy recovery, and thermal storage.
Steve was part of the team that recently unveiled Mohawk College’s Joyce Centre for Partnership & Innovation, the largest net-zero building in North America. To add to his lengthy list of achievements, he was presented with the Green Building Champion Award by the Canada Green Building Council in 2014.
A LEED Fellow, Steve is also a member and past chair of the Energy & Engineering Technical Advisory Group LEED Canada.

Paul Kernan | Architect AIBC

Principal, Senior Building Science Specialist

Paul Kernan | Architect AIBC

Principal, Senior Building Science Specialist

Paul leads our Existing Buildings practice area and is responsible for developing the strategic approach, establishing consistent standards, and identifying new services for the Existing Buildings group.

Along with his operational responsibilities, Paul has specialized in building enclosure design and rehabilitation for over 20 years. He is a registered architect with experience in North America and Europe.

Paul is an advocate for a client-first approach and ensures that his team is effectively communicating and addressing building owners’ concerns. He has experience working on a variety of building types and collaborating with various ownership groups.

Prior to joining RDH in 1998, Paul was the Building Envelope Specialist at the City of Vancouver, responsible for developing and implementing many of the city’s technical initiatives regarding building envelopes. While at the city, Paul assisted in the development of a building envelope education program for architects and designers and administered the city’s envelope specialist certification program.

Warren Knowles | P.Eng.

Principal, Senior Building Science Specialist

Warren Knowles | P.Eng.

Principal, Senior Building Science Specialist

Warren joined RDH when it was founded in 1997 and continues to play a key role in the evolution of the company.

Warren first realized the importance of integrating building science and façade engineering while working in a cold climate. It was evident to him that there was a need to make buildings more durable and energy efficient, which has led to research and development of new approaches to the design and implementation of building enclosures.

He enjoys working with building owners and other project team members to collaboratively determine creative, yet simple, solutions to help make their buildings better. His depth of knowledge of RDH’s services allows him to work with building owners and project teams to better achieve the project objectives.

Warren has led projects that have gained industry recognition, including the Engineers and Geoscientists of British Columbia Sustainability Award. His influence on the industry has also previously included roles as the President of the BC Building Envelope Council and Director of the National Building Envelope Council. He is currently a member of the Engineers and Geoscientists of British Columbia Building Enclosure Committee.

Michael Kramer | LEED AP

Principal, Senior Building Science Specialist

Michael Kramer | LEED AP

Principal, Senior Building Science Specialist

As a Senior Building Science Specialist, Michael has comprehensive experience leading New Buildings and Existing Buildings projects at RDH. His meticulous and detail-oriented approach can be attributed to his knowledge of building science and his industry experience.

Along with applying his building science focus to assess the relationships between sustainable building, building durability, and building codes, Michael is also the Co-Regional Manager of RDH’s Seattle office.

His past achievements include being a member of the City of Seattle Green Building Team that developed Seattle’s groundbreaking Sustainable Building Policy—the first municipal policy of its kind to adopt the U.S. Green Building Council’s Leadership in Energy and Environmental Design (LEED) Green Building Rating System.

Michael’s diverse career path, as well as his knowledge of the Washington and Seattle building, mechanical, and energy codes, is an asset to our team and clients.

Along with being an LEED Accredited Professional (LEED AP), he also holds memberships with the National Institute of Building Science and the Seattle Building Enclosure Council.

Erik Lawrence | AIA, M.Arch.

Associate, Project Architect

Erik Lawrence | AIA, M.Arch.

Associate, Project Architect

As an Oregon-licensed architect, Erik brings a diverse set of skills to our team in Portland. He provides expertise in the investigation, analysis, and design of building enclosures.

His unique role as an architect in the building science field has allowed him to specialize in integrating the technical aspects of enclosure design and detailing for buildings with a sharp focus on affordable aesthetic quality that helps clients achieve their goals.

As the building industry continues to explore unfamiliar and audacious designs, Erik’s architectural experience has become a valued asset to many of our clients.

Wei Lam | PE

Principal, Building Science Specialist

Wei Lam | PE

Principal, Building Science Specialist

Wei specializes in the performance and design of building enclosures related to heat, air, and moisture control. He leads RDH’s Northeastern United States team from the Boston office.

Wei continues to make inroads in our newest geographic location, overseeing various building enclosure consulting and enclosure commissioning projects. Wei has brought his innovative and direct approach to high-profile projects such as the Maine Medical Center and the Harvard University Art Lab.

Wei has a bachelor of science in civil and environmental engineering from the University of Massachusetts.

Catherine Lemieux | P.Eng., LEED AP

Principal, Building Science Specialist

Catherine Lemieux | P.Eng., LEED AP

Principal, Building Science Specialist

Catherine is a Building Science Specialist on our New Buildings team in the Vancouver office. Through her years of practice managing investigative, rehabilitation, and building enclosure consulting projects, she has gained a well-rounded approach to building science. She enjoys working with architects and owners to develop conceptual façade solutions for innovative building enclosures.

As a Professional Engineer, Catherine possesses technical expertise in the design and implementation of complex glazing and cladding systems as well as in-depth experience in engineering high-performance building enclosures.

She is also an important technical advisor for staff in our New Construction group. Internally she supports staff across multiple projects in making design, construction, and project management-related decisions.

Catherine enjoys keeping a pulse on the industry through committee involvement, including as a past director of the BC Building Envelope Council.

Ariel Levy | MS, PE, LEED AP

Principal, Chief Operating Officer, Senior Building Science Specialist

Ariel Levy | MS, PE, LEED AP

Principal, Chief Operating Officer, Senior Building Science Specialist

Ariel’s experience ranges geographically from the East to the West Coasts and includes buildings of all types.He manages a number of building enclosure consulting and remedial repair projects and leads many building enclosure design reviews and investigations.

In addition to his role as a Senior Building Science Specialist, Ariel is the Chief Operating Officer of RDH and participates in the overall direction and management of the firm.

Prior to his current position in the Portland office, Ariel spent several years practicing in Boston and Los Angeles. He is a registered Professional Engineer in six states, including Oregon, Washington, California, Alaska, Montana, and Georgia.

Winnie Lin | CPA-CA

Associate, Corporate Controller

Winnie Lin | CPA-CA

Associate, Corporate Controller

Winnie is a CPA-CA and has over 10 years of finance experience in both industry and public practice.

Since Winnie joined RDH in 2014, her role has evolved and expanded to her current position as Corporate Controller. She is responsible for leading the administration of payroll, benefits, insurance, and tax planning. She also helps manage RDH’s Shareholder Program and day-to-day finance operations for our offices in both Canada and the United States.

Jesse Listoen | Dipl.T.

Associate, Project Manager

Jesse Listoen | Dipl.T.

Associate, Project Manager

Jesse is a Project Manager in our Existing Buildings group, specializing in the repair, renewal, and rehabilitation of building enclosures. He also works with building owners to provide maintenance and planning services.

Working throughout the Lower Mainland of British Columbia, Jesse has developed the ability to successfully manage all phases of a project while keeping the owners updated and informed. His aptitude for professionally managing the warranty review process is recognized by RDH as well as the industry.

A British Columbia Institute of Technology Honours Graduate, Jesse was also the recipient of the BC Building Envelope Council Foundation Achievement Award in Building Science.

Christy Love | P.Eng., LEED AP BD+C

Associate, Vancouver Island Regional Manager, Senior Project Engineer

Christy Love | P.Eng., LEED AP BD+C

Associate, Vancouver Island Regional Manager, Senior Project Engineer

Christy provides leadership and guidance as the Vancouver Island Regional Manager. She oversees staff in both the Victoria and Courtenay offices, and has contributed to projects all over North America.

Her role as a Senior Project Engineer has her exploring and implementing energy- and water-efficient mechanical systems as well as emphasizing the importance of sustainable buildings. She has completed analyses for a range of energy and water conservation projects and researched innovative system design strategies.

In addition to a broad understanding of strategies to improve a building’s performance, Christy brings strong project management and clear communication to her client relationships. She particularly enjoys helping her clients fully understand the financial, functional, and environmental compromises of a range of design strategies, enabling them to make informed choices.

She has conducted numerous research projects for both government and industry associations, including Cost-Benefit Analysis of Super-Efficient New Buildings, a costing study for BC Hydro.

Stephen Lowther | AScT

Associate, Project Manager

Stephen Lowther | AScT

Associate, Project Manager

Stephen is the Maintenance and Planning lead in our Victoria office. His role as a Project Manager primarily involves building enclosure investigation and assessment as well as providing technical assistance for the design and construction methods for Existing Buildings projects.

Stephen organizes building enclosure investigations, assessments, and technical reviews of building enclosure renewal. He works to ensure that materials and design specifications are correctly implemented during construction. He also coordinates performance testing of many building enclosure components and assemblies, including roofs, balconies, and windows.

Stephen first worked at RDH during the summer of 2005 while still a student, following the completion of his Diploma of Architectural & Building Engineering Technology he rejoined the company in 2006.

Alex Lukachko | M.Arch.

Principal, Senior Building Science Specialist

Alex Lukachko | M.Arch.

Principal, Senior Building Science Specialist

Alex is a Senior Building Science Specialist and the Regional Manager for our Ontario offices.

Alex has a background in architecture and building science and is typically involved in early project stage consulting for high-performance new construction or retrofits, using an integrated approach to the enclosure, mechanical system, and energy performance design.

In his role as Regional Manager, Alex oversees numerous building science professionals and manages a variety of corporate initiatives. His knowledge of RDH’s broad range of services allows him to support staff as they take on new responsibilities and roles. He has played an important role in the development of personnel across our Energy & Sustainability, New Buildings, and Building Science Laboratories.

Alex is also a Lecturer at the John H. Daniels Faculty of Architecture, Landscape and Design at the University of Toronto. He has active research interests in the development of future building enclosure systems and the design of high-performance, low environmental impact buildings. In particular, Alex is interested in the link between architectural design and quality assurance that ensures high building performance.

Lucas Nahrgang | PE

Associate, Building Science Engineer

Lucas Nahrgang | PE

Associate, Building Science Engineer

As a Building Science Engineer working in our Boston office, Lucas is relied upon to provide technical input on a mix of building enclosure systems.

Lucas’s experience involves both New Buildings and Existing Buildings projects, ranging from wood-frame, multifamily residential buildings to multi million-square-foot data centers. He has a strong understanding of building codes and practices on both the West and East Coast of the United States.

Beginning his career with RDH in Portland, Lucas quickly became an important contributor to the region’s business development and operations. He joined the Boston office when it was established in 2017 and has played an important role in our progress in the region.

Rob Orlowski | AScT

Associate, Façade Specialist

Rob Orlowski | AScT

Associate, Façade Specialist

Rob is a Façade Specialist who provides input on a range of elements related to the design and implementation of façade systems. He is part of our New Buildings team, where he is involved in various façade engineering and procurement projects.

He has gained an in-depth understanding of a variety of glazing technologies. Many manufacturers have utilized his skills to help update their system designs to meet increasing performance requirements and improve the integration with high-performance assemblies.

Rob joined RDH in 1998 and spent a year helping to establish RDH’s presence in Portland when the office opened in 2004.

Tiffiny Palmer | CPA, CMA

Principal, Director of Finance

Tiffiny Palmer | CPA, CMA

Principal, Director of Finance

Tiffiny is our Director of Finance and is a Certified Professional Accountant and Certified Management Accountant.

She is responsible for management of the finance department and, alongside her team, oversees day-to-day accounting functions for our offices in both Canada and the United States.

Tiffiny plays a critical role in planning and developing the integration of our enterprise resource planning and business process management systems. Her ability to evaluate and provide insight on significant businesses decisions is an important tool for RDH’s growth.

Monte Paulsen | EA, CPHC, PHI Building Certifier

Associate, Passive House Specialist

Monte Paulsen | EA, CPHC, PHI Building Certifier

Associate, Passive House Specialist

Monte is among Canada’s most experienced Passive House professionals. He leads a multi-city Passive House team that has consulted on or certified more than 70 projects—totaling 4 million square feet—including homes, offices, affordable mid-rise buildings, and luxury high-rise buildings.

Monte is also a veteran Passive House Trainer who has helped more than 100 professionals earn their Certified Passive House Designer (CPHD) credential. His courses range from a one-day Passive House 101 overview to the multi-day workshop A Pattern Language for Passive House.

Monte was a founding board member and volunteer at the nonprofit organization Passive House Canada, and previously managed his own Passive House consulting firm, which merged with RDH in 2016.

Joseph Piñon | MS, PE

Principal, Building Science Specialist

Joseph Piñon | MS, PE

Principal, Building Science Specialist

As a performance-driven and client-focused professional, Joseph is dedicated to employing the principles of building science to improve building enclosures.

He is well-versed in many of the services RDH provides on New Buildings and Existing Buildings projects. He possesses a broad knowledge of industry best practices as prescribed by ASHRAE and ASTM as well as national, state, and local building codes on the performance standards relating to energy efficiency and moisture control.

Joseph holds a bachelor’s degree in physics and completed his master’s in architectural engineering with a structural major.

Heather Reid | P.Eng.

Associate, Building Science Engineer

Heather Reid | P.Eng.

Associate, Building Science Engineer

Heather is a project manager and engineer specializing in building science. As a key member of the Existing Buildings team, Heather brings over a decade of experience in design and project management.

Heather organizes and coordinates all aspects of building enclosure repair, renewal, and rehabilitation projects. She also contributes to technical committees within RDH and supports senior technical specialists on litigation and forensic projects.

As an experienced project manager, Heather is continually forming collaborative and effective relationships with clients, contractors, and her colleagues. She utilizes her strong leadership skills as a leader of a diverse group of technical staff.

Dave Ricketts | M.Sc., P.Eng., FEC

Principal, Senior Building Science Specialist

Dave Ricketts | M.Sc., P.Eng., FEC

Principal, Senior Building Science Specialist

As one of the three co-founders of RDH, Dave has played a crucial role in the overall direction and focus of the company. The experience and knowledge he has gained from growing RDH makes Dave a valuable resource to all staff as RDH continues to move forward.

Throughout his career and his time with RDH, Dave has managed and guided multiple exemplary building enclosure engineering projects. He combines a thorough understanding of building science theory and materials with practical knowledge of construction practices and sequencing.

A key contributor to the evolution of building codes and best practices following BC’s leaky condo crisis, and a respected leader across North America. Dave has led several landmark policy, guideline, and research initiatives. He had a crucial role in the pivotal study, Survey of Building Envelope Failures in 3 & 4 Storey Wood Frame Buildings in the Coastal Climate of BC, commissioned in 1996.

Lorne Ricketts | M.A.Sc., P.Eng.

Principal, Building Science Specialist

Lorne Ricketts | M.A.Sc., P.Eng.

Principal, Building Science Specialist

Working across a wide spectrum of RDH’s core practice areas in his roles as a consultant, researcher, and educator, Lorne is able to leverage his multifaceted expertise to identify optimal solutions to complex building science problems.

As a trusted consultant, Lorne regularly works closely with architects and developers to achieve their design and performance goals. Lorne’s typical projects include world-class architecture, industry-leading energy efficiency, and cutting-edge building technologies.

In his role as leader of our Building Science Laboratories team in Vancouver, Lorne works with manufacturers, governments, and industry organization to develop and test the next generation of building systems, and to lead change through the production of numerous industry-leading guidance and research documents.

Lorne is deeply committed to education and is an accomplished presenter, having spoken at numerous conferences and industry events across North America. In addition to his work with RDH, Lorne also passes on his knowledge to the next generation of engineers as an Adjunct Professor at the University of British Columbia, where he teaches building science in the Department of Civil Engineering.

John Robb | B.Sc. (HONS), M.Sc., MBA, CPA

Principal, Chief Financial Officer

John Robb | B.Sc. (HONS), M.Sc., MBA, CPA

Principal, Chief Financial Officer

Since 2012, John has been responsible for the oversight of RDH’s finance and operational functions, including the accounting, business applications, IT, and human resource teams.

Michael Roche | B.Sc. (HONS), MCPM

Principal, Manager of Construction Services

Michael Roche | B.Sc. (HONS), MCPM

Principal, Manager of Construction Services

Michael is responsible for overseeing RDH’s construction services. As manager, Michael is committed to delivering high-quality project management services through our Construction Project Management (CPM) division. For more than 15 years, Michael has helped develop and grow the CPM division in the Lower Mainland and Victoria, emphasizing quality and performance in all areas of work.

He has successfully managed the remediation of many buildings that face complex challenges, including residential buildings, institutional buildings at the University of British Columbia and Simon Fraser University, hotels such as the One Wall Centre and the Sheraton Guilford Hotel, plus the unique Broadway Pentecostal Church.

Michael first joined RDH as a Project Coordinator before progressing to become a Senior Project Manager and then assuming the role of Manager of Construction Services. He is committed to growing RDH’s services by ensuring that clients are treated with professionalism.

Gerry Ruehle | B.Arch., B.E.S.

Associate, Project Designer

Gerry Ruehle | B.Arch., B.E.S.

Associate, Project Designer

As the lead of our Vancouver drafting team, Gerry’s focus is primarily on design development and the coordination of construction documentation for building enclosure rehabilitation projects.

Trained as an architect, Gerry brings 20 years of design and detailing experience to rehabilitation and renewal projects. He also assists field staff with the interpretation of design details and with necessary modifications to address as-built conditions.

Gerry gained experience working for architectural firms in Vancouver and Toronto before joining RDH in 2003.

Chris Saldanha | PE

Associate, Senior Project Engineer

Chris Saldanha | PE

Associate, Senior Project Engineer

Chris works on both New Buildings and Existing Buildings projects to provide desired outcomes and meet client expectations.

He regularly provides field review and has been involved in making key building enclosure-related decisions on projects in Washington, including the Bullitt Center and Washington Square Towers.

Chris’s particular building science expertise includes hygrothermal computer modeling of enclosure assemblies, 3D heat flow analysis, infrastructure renewal, and heat and moisture flow and energy use analysis for sustainable buildings.

Chris joined the Seattle team in 2007 after gaining industry experience working for a concrete manufacturer in Ontario.

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.

Colin Shane | M.Eng., P.Eng., PE

Principal, Senior Project Manager

Colin Shane | M.Eng., P.Eng., PE

Principal, Senior Project Manager

Colin is a Professional Engineer in the United States and Canada and provides operational and project leadership in the San Francisco Bay Area office.

Colin has a broad knowledge of building construction and applies building science principles to analyze and design durable, energy-efficient building enclosures. He shares his experience by regularly speaking about topics related to building enclosures at events across the United States and contributes to industry organizations with the aim of making buildings better.

Colin began his career with RDH in Vancouver before transferring to the San Francisco Bay Area and now plays a key role as part of the leadership team for our California operations.

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.

Kyle Silliker | PE

Principal, Building Science Specialist

Kyle Silliker | PE

Principal, Building Science Specialist

Kyle leads our New Buildings group, and is the Co-Regional Manager of the Seattle office.

A proponent of quality assurance and client satisfaction, Kyle is sought out by developers and architects to assess the practicality and performance of their concepts. On both the West and East Coasts of North America, he consults on energy code compliance and energy retrofit services.

Kyle is also a member of the Seattle Building Envelope Council.

Kathleen Smith | CT

Principal, Senior Project Manager

Kathleen Smith | CT

Principal, Senior Project Manager

An experienced professional, Kathleen leads our Maintenance and Planning group out of the Portland office. She possesses a diverse range of skills in the application of building science technologies, building asset management, and contract administration services.

Kathleen is heavily involved in keeping a clear line of communication between the building owner and contractors and suppliers. Through her experience, she has developed a strong rapport with a range of service providers and manufacturers, furthering her ability to deliver on the client’s expectations.

Kathleen left Vancouver to join the Portland team when it was established in 2004.She has built a strong position for herself in the industry, including being a member of the Building Envelope Council of Oregon.

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.

David Taguchi | Eng.L., RRO®

Associate, Building Science Specialist

David Taguchi | Eng.L., RRO®

Associate, Building Science Specialist

For 20 years, David has provided building enclosure and roofing engineering consulting services for both New Construction and Existing Buildings projects throughout British Columbia, Alberta, Saskatchewan, Manitoba, and the United States.

As a Building Science Specialist, David leads teams of engineers and technologists to provide a range of engineering services, including building enclosure investigations, assessments, design, and the rehabilitation of existing buildings.

Before joining RDH, David worked at building science firms in British Columbia and Alberta. As a Senior Project and Branch Manager, he opened and established the Calgary branch of another building science firm.

Ed Thiessen | P.Eng.

Principal, Senior Building Science Specialist

Ed Thiessen | P.Eng.

Principal, Senior Building Science Specialist

An important member of the Existing Buildings group, Ed combines his background of structural engineering with building science to provide technically sound and innovative solutions for building enclosure rehabilitation projects. While focusing primarily on building enclosure services. He is an in-house resource for both our clients and staff when it comes to making informed design decisions relevant to the building enclosure.

In addition to his structural background, Ed has over 15 years of experience with building envelope assessment, design, and rehabilitation with a focus on high-rise buildings. His projects have included full and targeted enclosure renewals, glazing replacements, roof renewals, and historic building preservation.

Ed has also provided forensic and investigation services for a variety of clients in the insurance and legal industry for construction projects of various types.

Prior to completing his engineering degree, Ed completed his diploma of technology in civil and structural engineering from the British Columbia Institute of Technology.

David Vadocz | P.Eng.

Principal, Senior Façade Specialist

David Vadocz | P.Eng.

Principal, Senior Façade Specialist

David leads our Façade Structures team, providing expertise on a variety of fenestration and glazing systems across Canada.

David’s career has seen him work on virtually every type of glass and glazing system, and his expertise spans from the curtain wall, to skylights and canopies, to structural glass walls. He is a trusted consultant on all things glass, providing his professional knowledge to manufacturers, glazing contractors, architects, and fellow RDH staff.

David and his team’s structural experience is an asset to the RDH team and allows us to provide a well-rounded façade design service.

Neil Warburton | PE, CPHC

Principal, Building Science Specialist

Neil Warburton | PE, CPHC

Principal, Building Science Specialist

Neil’s versatility allows him to contribute to RDH’s New Buildings, Existing Buildings, and Energy & Sustainability practice areas in Washington.

Neil is a Building Science Specialist who works tirelessly to ensure that project requirements and client expectations are achieved. He works on a wide range of New Buildings and Existing Buildings projects, and he is committed to exploring and integrating Passive House and high-performance buildings on the West Coast of the United States.

Before joining RDH in 2005, Neil worked with another building enclosure consulting firm in Ontario, where he focused on roofing condition assessments and construction as well as fire protection field inspections.

Mark Will | BA Econ

Principal, Vancouver Regional Manager

Mark Will | BA Econ

Principal, Vancouver Regional Manager

Mark is an experienced construction manager who has overseen a large variety of building enclosure rehabilitation and assembly replacements. Beginning in 1998, Mark has fulfilled many roles at RDH, starting with field review and contract administration and moving onto project management, construction management, and asset management.

Mark has advanced within the company to the position of Principal and Vancouver Regional Manager. In addition to overseeing the administration and operations of the Vancouver office, he is also currently responsible for the training and development of approximately 50 staff in the Existing Buildings group.

Mark’s current role as a consultant includes managing projects associated with warranty claims. He is also responsible for the reconciliation of construction warranty defects and deficiency management with building owners for new and rehabilitated buildings.

Mark holds a bachelor of economics from the University of British Columbia and currently serves as a Business Member on the Condominium Home Owners Association of BC’s Board of Directors.

Kristen Yee Loong | B.A.Sc., P.Eng., LEED AP BD+C

Associate, Energy and Sustainability Specialist

Kristen Yee Loong | B.A.Sc., P.Eng., LEED AP BD+C

Associate, Energy and Sustainability Specialist

Kristen brings an invaluable depth of knowledge to the Energy & Sustainability team with her experience in sustainable design and construction practices. Her expertise includes consulting on energy-efficient system design strategies for high-performance buildings, LEED and code compliance, and simulating building energy use. She also performs energy efficiency assessments of Existing Buildings projects to identify areas where energy consumption can be reduced and energy savings could be made.

Working with design teams, government agencies, and utilities, Kristen gathers energy consumption data through submetering and utility bills to analyze and benchmark building energy performance.

Before joining RDH in 2016, Kristen worked at a sustainable buildings consulting firm in Toronto as a Senior Energy Analyst, where she led the Energy Analyst team.

David C. Young | PE

Principal, Senior Building Science Specialist

David C. Young | PE

Principal, Senior Building Science Specialist

David is a Senior Building Science Specialist who provides numerous services across our New Construction and Existing Buildings practice areas.

When contributing to building enclosure engineering projects, he is often involved from the conceptual design phase through project wrap-up. His eye for detail makes him adept at identifying performance issues and opportunities for increased durability.

David also works on historic conservation and restoration on the West Coast; for example, he recently completed the rehabilitation of Kaiser Permanente Town Hall in Portland.

David joined the Vancouver office in 1999 and was part of the team that brought RDH to Portland in 2004.