Each year RCI members from across North America and abroad gather to participate in over 25 hours of education covering the latest techniques and technologies in building envelope design, repair, and maintenance.
RCI Continuing Educational Credit
All registered attendees will receive Continuing Educational Hours (CEHs) based on hourly attendance at educational programs and the trade show.
AIA Continuing Educational Credit
Educational presentations are registered to provide Learning Units for AIA members. Programs will provide 1.0 LU per hour of attendance and qualify for Health Safety Welfare (HSW) credit.
Trade Show Continuing Educational Credit
Attendees will earn 2.0 CEHs for spending up to four hours on the trade show floor. Attendees who spend more than four hours at the trade show will receive 3.0 CEHs.
Friday, March 23
Litigation Support Services for Building Envelope Experts
This auxiliary seminar is specifically designed for building envelope experts who provide litigation support services. It was developed by an experienced construction attorney who has litigated several building envelope-related cases and a building envelope expert with extensive experience in litigation support. Using case histories, the seminar will provide an overview of the construction litigation process and construction claim types. The presenters will discuss the stages of litigation, the role of an expert, how he or she can make or break a case, and the important attributes of a building envelope expert. The presenters will cover typical challenges facing building envelope experts, such as document management and attribution of damages. They will also cover the “do’s” and “don’ts” of testifying in various venues.
Kamran Farahmandpour, FRCI, RRC, RWC, REWC, RBEC, PE, FNAFE, CCS, CCCA | Building Technology Consultants, Inc., Arlington Heights, IL
Kami Farahmandpour is a principal of his firm with over 30 years of building envelope experience. He has served as an expert for many construction disputes. His services in building envelope-related cases have included forensic investigations of water leakage and failure issues through nondestructive and destructive testing, using analytical modeling programs to assess proposed solutions, damage calculations, presentations at mediations, and testimony at depositions, trials, and arbitration proceedings. Having been retained as an expert by plaintiffs and defendants on many cases, he has a unique perspective of the construction dispute process and the role of an expert in such disputes.
Josh M. Leavitt | Much Shelist, PC, Chicago, IL
Josh Leavitt cochairs the construction law group at his firm and is an elected Fellow of the American College of Construction Lawyers. He is entering his 30th year of practice. Leavitt has represented the full spectrum of construction sector participants, including leading ENR-listed companies and Fortune 100 companies. He has handled matters involving dozens of building systems and technologies and a variety of building types, including some of the tallest buildings in the world, manufacturing and energy plants, museums, theaters, tunnels, and quarries. He has both transactional and disputes experience involving design, construction, restoration, repair, and replacement matters. Leavitt has frequently lectured and published on construction and design law topics.
Stucco And Exterior Finish Cladding Systems
The Stucco and Exterior Finish Cladding Systems course is the second specific exterior wall course that builds on the fundamentals presented in RCI’s Exterior Walls and Science educational program. This shortened one-day course will provide essential information on material properties, design principles, evaluation techniques, and repair methods for stucco and EIFS. Topics covered in this course include the various codes and standards that influence design, installation of stucco and EIFS systems, serviceability requirements, performance test methods, and case histories relative to stucco and EIFS assemblies. This abbreviated course is recommended for those who have taken Exterior Walls Technology and Science and want to further expand their knowledge of exterior wall systems. It will also serve as a good review course for those interested in taking the Registered Exterior Wall Consultant (REWC) exam.
James I. Daniel, REWC, PE | Daniel Building Investigations, Inc., Lemont, IL
Jim Daniel is a nationally recognized building enclosure and building science expert with 40 years of experience. He is a licensed professional engineer in 22 states. Daniel specializes in the investigation, testing, and evaluation of nonperforming construction systems, including exterior building façades and roofing systems. He has authored numerous publications relating to concrete technology, fiber-reinforced concrete, and exterior cladding systems and has been an invited lecturer at numerous technical seminars and educational courses. Daniel is an active member of RCI’s TAC Committee and serves on the ASTM subcommittees C11.03 and C11.05 that promulgate the Stucco and EIFS Installation standards.
Richard L. Cook, Jr., FRCI, RBEC, RRC, REWC, RWC, RRO, CCS & LEED® AP, CSRP, SC ACEM | ADC Engineering, Hanahan, SC
Rick Cook is a past president of RCI, Inc. and is the principal and building envelope consultant and designer for his firm. He provides consulting services for private, commercial, industrial, institutional, and government agencies. Cook has authored numerous papers on roofing, waterproofing, and building systems. He has presented at national symposia and conferences for the American Society of Civil Engineers, the Construction Specifications Institute, and RCI.
Patricia M. Aguirre, REWC, PE, CDT | Bristow, VA
Tricia Aguirre is a consulting engineer with 15 years of experience. Her work focuses on forensic field and laboratory investigations; façade and building envelope investigations; structural inspection, analysis, and design; architectural retrofit and repair; and development of design documents and repair recommendations. Aguirre is an active member of the RCI Interface Peer Review Committee. She also serves on the ASTM C11 committee on Gypsum and Related Building Materials.
Saturday, March 24
Remediation of Balcony Waterproofing and Structural Framing
The speaker will present two case studies of the investigation and remediation of water leakage and construction defect issues related to waterproofing of the balconies on two different assisted living facilities. Due to many design errors and construction issues, the balconies at both of these projects leaked water over time, which resulted in significant structural damage and water intrusion. These balconies were designed with wood framing, wood joists, engineered wood products, and common waterproofing membranes. Renovation included redesign, modification, and replacement of several portions of the original structural framing, associated parapet walls constructed of Portland cement plaster, and brick and stone veneer cladding assemblies. Additional drainage and slope considerations were also engineered for these facilities.
Warren R. French, FRCI, RBEC, PE | French Engineering, LLC, Houston, TX
Warren French is president of his firm. He has over 45 years experience in design, engineering, and construction of commercial, industrial, and institutional buildings. His experience and abilities include analysis, design, testing, and inspection of all types of construction assemblies intended to resist moisture migration within buildings. Areas of expertise include all types of roofing systems, below-grade and plaza-type waterproofing, building sealants, wall cladding systems, plaster, EIFS, and all types of curtainwall.
The Air Barrier Circus
Over the last several years, air barrier membranes used in contemporary wall systems have seen rapid product development and evolution. Hybrid systems that combine sheathing with air/water/vapor barrier membranes and vapor-permeable sheet membranes are particularly lively segments of today’s market. The speaker will review the current range of available air barrier products and discuss product subtypes and variations.
Matthew Copeland, PE | Gorman Richardson Lewis Architects, Hopkinton, MA
Matthew Copeland is the director of building envelope sciences at his firm. He has presented at RCI, IRE, Build Boston, and the Urban Green Council. His written work has appeared in The Construction Specifier and RCI’s Convention Proceedings.
Performance Influence: Roofing Assemblies’ Interface With Decks
With all the outside forces affecting building construction design, such as the International Code Council, economic changes, and green standards, to name a few, it is no wonder that some decking material has conflicted with interfacing of the roofing assemblies. Though these materials are permitted by the building code, the failure of the material to hold a fastener or adhesive for roofing can jeopardize the expected performance of the roofing assembly. To avoid concerns about long-term performance, it is important to understand the types of decking materials, their limitations, and how to improve architectural specification wording to meet code.
Brian Chamberlain | Carlisle Construction Materials, Carlisle, PA
Brian Chamberlain has been with Carlisle Construction Materials since 1987. He graduated from the University of Wisconsin at Milwaukee, earning a bachelor’s degree in the science of architectural design. Chamberlain has been assisting architects, consultants, and specifiers with assemblies, focusing on performance and sustainability. He is part of a team responsible for assemblies, details, and code testing. He has presented technology information throughout the U.S., Canada, and overseas, offering information on unique design issues.
Waterproofing and Integration of Exposed Air Handling Unit (AHU) Cladding with the Building Envelope
Large rooftop mechanical equipment, such as air handling units (AHU), can be an important component of a building’s exterior envelope. However, it is critical that the skin of this equipment be designed or constructed with principles similar to the remainder of the building envelope. This presentation will explore successes and failures in AHU cladding and roofing systems. It will also provide guidance for alternative construction techniques that can address specific issues, including removing the equipment from the building envelope.
Daniel Gibbons | Simpson Gumpertz & Heger, San Francisco, CA
Daniel Gibbons is the leader of Simpson Gumpertz & Heger’s roofing and waterproofing practice group. He has experience investigating and designing commercial, institutional, and residential buildings for waterproofing issues including roofs, plaza areas, below-grade spaces, and exterior walls. He has consulted with architects, contractors, and building owners to analyze and repair water intrusion problems and construction defects.
Nonpresenting Coauthor: David Markman, PE | Simpson Gumpertz & Heger
Floodproofing New York: The City’s Response to Superstorm Sandy
This presentation will provide consultants, engineers, and architects with an overview of newly in-place floodproofing building code requirements for New York City, as well as various floodproofing strategies that satisfy both code and (often more stringent) project-specific needs. Various systems and assemblies for wet and dry floodproofing will be discussed, together with the advantages and disadvantages of the designs’ approaches. Case studies will be presented that illustrate the implementation of several different floodproofing strategies and the presenters’ lessons learned during the projects’ design and construction.
Kenrick J. Hartman, RBEC, RRC, RWC, REWC, PE, LEED AP BD+C | Wiss Janney, Elstner Associates, New York, NY
Kenrick J. Hartman specializes in the evaluation and repair of building envelope systems. He has experience with a variety of materials, including terra cotta, brick, concrete, steel, glass, and various roofing and waterproofing products. Hartman performs field testing, moisture infiltration investigations, facade evaluations, and repair design for modern and historic structures.
Douglas R. Stieve, RRC, AIA | Wiss, Janney, Elstner Associates, New York, NY
Douglas Stieve specializes in diagnosis and repair design for building envelope failures in contemporary and historic buildings. Since joining WJE in 1991, Stieve has provided professional services for over six hundred buildings throughout the northeast United States. He has experience with many types of materials, including brick, concrete masonry, natural stone, and exterior insulation and finish systems (EIFS). Stieve has managed design and construction services for several multi-million-dollar repair and rehabilitation projects, and provided consulting services for new buildings.
Sunday, March 25
Know Your Code Requirements!
The codes are becoming more and more complex. Designers are challenged to keep abreast of current code provisions. The 2015 International Codes have been available for several years, the 2018 International Codes will be published in January 2018, and work has begun on the 2021 edition of the International Codes. This presentation will cover major changes that will affect your projects, possible changes to the 2021 edition, and code requirements you may not be familiar with. Among the topics covered will be secondary drainage requirements for reroofs, susceptible bay requirements, ponding analysis requirements, and interpretations from the commentaries published by the International Code Council. The presentation will focus on the International Building Codes, International Existing Building Code, and the International Energy Conservation Codes.
Wanda Edwards, PE | RCI, Inc., Raleigh, NC
Wanda Edwards is the Senior Director of Technical Services for RCI. Before joining RCI, Edwards served as director of code development for the Institute for Business and Home Safety. Previously, Edwards served as deputy commissioner and chief engineer for the Engineering Division of the North Carolina Department of Insurance, whose responsibilities included administration and regulation of the building codes. She was a Fulbright scholar to Trinidad and Tobago and previously owned a design/construction/development firm. Edwards earned her bachelor’s degrees in civil engineering and architecture from North Carolina State University. She is a licensed professional engineer and serves on various committees within ASTM, ICC, and NIBS.
Donald R. Scott, PE, SE, FSEI, FASCE | PSC Structural Solutions, Tacoma, WA
Don Scott is a member of multiple national engineering boards, has been a member of ASCE 7 Wind Load Subcommittee for over 20 years, and a member of several other ASCE 7 committees. He was the chairman of the ASCE 7 Wind Load Subcommittee for the 2016 edition and is continuing as chairman for the 2022 edition, which sets the standards for wind loads on buildings. Scott is a past president of the board for the Applied Technology Council. He has authored many technical publications, given numerous industry presentations on wind design loads for ASCE/SEI, and has given several National Council of Structural Engineers Association webinars on the same subject.
Avoiding Condensation in Low-Slope Roofing Assemblies
There have been an increasing number of low-slope roofing assemblies with extensive condensation damage. This is perhaps a result of designers failing to understand proper use of venting and vapor barriers as related to Title 24 and cool roof requirements. This presentation will review the building science and design options behind vented and unvented roof assemblies. The speaker will highlight the differences between vapor barriers and retarders, then provide guidance on selection and placement in a roof section. The author will cover forensic case studies of roofing failures resulting from improper venting and placement of vapor retarder and barrier assemblies.
Jerome L. Jeffers, II, RRC, RWC, REWC, RBEC, CCS, CCCA | Allana Buick & Bers, Inc., Palo Alto, CA
Jerome Jeffers has over 40-years of experience in design services for the building industry. His waterproofing experience encompasses a wide variety of projects including below-grade, split slab, pedestrian, mechanical room, vehicular deck, and exterior wall. His building envelope experience includes design for renovations to exterior wall systems such as siding, stucco, cement plaster, pre-cast concrete, and masonry. Jeffers provides solutions to building weatherization issues and deterioration to building structures including stairs, landings, and balconies.
Robert L. Worthing, Jr., CDT | Allana Buick & Bers, Inc.
Robert Worthing specializes in the investigation, design, and construction administration of all types of roofing and waterproofing systems. With over 18 years of experience, he has a unique ability to apply a blend of technical knowledge, field experience, and sound business judgment toeach individual project to find the best solution for the client. Worthing’s experience includes: roofing and waterproofing evaluations, destructive testing/investigation, development of technical roofing and waterproofing construction documents, peer review, construction administration services, and project management. He has been a member of RCI for six years and currently holds a Construction Documents Technologist (CDT) certification from Construction Specifications Institute (CSI).
Nonpresenting author: Karim P. Allana, RRC, RWC, PE | Allana Buick & Bers, Inc.
SPRI Roof System Listing Service Program
This SPRI-sponsored Listing Service is an unbiased source of information for roof systems tested and evaluated to meet code for wind uplift requirements. This listing service has been developed to serve as an easy-to-use reference source for consultants, design professionals, contractors, code officials, and others. The speakers will discuss the steps to a product’s listing, including the validation of each listing to assure accuracy and quality, and an explanation of the many benefits, which include deck types not available in other listing services, including Tectum, gypsum, wood, and lightweight insulating concrete (LWIC). Instructions on how to use the listing service, how to easily search for assemblies, and details about the system’s operations will be presented.
Stan Choiniere | Southwick, MA
Stan Choiniere retired last summer as OMG Roofing Products technical director. He continues with consulting work for manufacturers for product approvals with agencies such as Factory Mutual. He is currently working with SPRI assisting with technical projects. The DORA program was started when Choiniere was President of SPRI.
Ron Reed, ASQ-CQA | Intertek, York, PA
Ron Reed manages certification and quality assurance programs and inspections for the building and construction segment of his business and oversees the operations of the engineering services, inspection, and program management groups in York, PA. He was an integral part of the development of the SPRI Roof System Listing Service Program.
Nonpresenting Coauthor: Michael J. Ennis, RRC, CDT | Ennis Associates
Assessing Concrete Moisture in Unconditioned Environments
Moisture-sensitive materials are commonly applied to concrete surfaces with exterior environmental exposure (roofs, plazas, concourses, retention structures, parking garages, etc.). Most current industry guidance regarding acceptable concrete moisture is limited to concrete in conditioned environments where the temperature and humidity are controlled. Research has been conducted to develop a framework to provide guidance for the application of moisture-sensitive materials in unconditioned environments. The presentation will include discussion of basic to advanced topics and will offer findings from research that will be useful for design professionals specifying the application of moisture-sensitive materials.
Kip Gatto | Wiss, Janney, Elstner Associates, Inc., Seattle, WA
Kip Gatto is an engineer with over 15 years of experience with the forensic investigation of concrete structures and the development of appropriate repairs. Much of his work has involved diagnosis and assessment of moisture-sensitive materials applied to concrete surfaces.
Nonpresenting Coauthors: Grace Wong, AIA, and Kari Klaboe, PE, SE | Wiss, Janney, Elstner Associates, Inc.
Onondaga County Reroofing Project: Impacts of Reflectance and Thermal Resistance
The 2009 roof replacement project at the Onondaga County Correctional Facility in Jamesville, NY, provided a unique opportunity to evaluate the relative performance of roofing systems with different energy efficiency strategies. Because the project included roofs on four identical buildings on the same site, the setup allowed comparison of insulation R-Value and roof reflectance values, as well as the thermal performance of vegetative roofing systems in northern climate zones. By reviewing thermal transmittance data and correlating the results with local weather conditions, this paper provides insight into various roofing design options to maximize building energy efficiency and overall roofing performance.
Michael D. Fischer | Kellen Company, Chittenango, NY
Michael Fischer is a 34-year veteran of the building products industry. He has held management positions in manufacturing, marketing, and regulatory affairs. Fischer is a member of the International Code Council (ICC), ASHRAE, IAPMO, and ASTM International and represents the Asphalt Roofing Manufacturers Association (ARMA) and the Roof Coatings Manufacturers Association (RCMA). In addition, he serves as codes consultant to the Polyisocyanurate Insulation Manufacturers Association (PIMA) and the Center for the Polyurethanes Industry (CPI) of the American Chemistry Council (ACC). Fischer has testified before code, regulatory, and legislative bodies and is a frequent presenter at building industry events and conferences.
Nonpresenting Coauthors: Hugh Henderson Jr., Nicholas Genzel and Marcin Pazera
A Discussion on Fenestrations Testing
Standardized testing is a terrific way to validate the real-world performance of fenestration systems. When combined with a thorough quality assurance plan, testing an enclosure system to a standardized procedure allows design and construction teams to control for quality. With that said, testing should not be specified or performed without consideration of the needs of a project. Sometimes, an industry standard doesn’t quite match the design intent of an assembly. In these cases, testing should be adjusted accordingly. The speaker will cover the mechanics of fenestration water testing and how to critically analyze a water penetration test against a fenestration’s design intent. The presentation will include a review of common fenestration testing protocols from ASTM and AAMA and exploration of their origins and intent. Discussion will also focus on the building science behind common fenestration systems. The dialogue will tie testing and science together to highlight areas where the two don’t align. The presentations conclusion with feature a discussion of what could be revised in test procedures to provide better value to design and construction teams.
José Estrada, RRO, PE | JRS Engineering, Ltd., Seattle, WA
José Estrada is a professional engineer in the state of Washington and a Registered Roof Observer. With a decade of experience as an enclosure consultant under his belt, Estrada has worked on projects of various types and sizes throughout the United States, Canada, and China, focusing primarily on the Pacific Northwest and California. His project experience includes all phases of design through construction, including involvement with field and lab fenestration testing.
Monday, March 26
Roof Drainage Design, Roof Collapses, and the Codes
Every year, roofs in the United States collapse because of roof drainage-related design issues. These collapses result in large financial losses and serious safety consequences, including loss of life. This paper is the result of more than three decades of forensic investigations of dozens of catastrophic roof collapses and addresses recent changes in the codes that have profound life safety implications. This paper includes an in-depth discussion of drainage design fundamentals, flaws in current and past code design standards, examples of actual collapses, and the drainage design issues contributing to the collapses.
Stephen L. Patterson, PE, RRC, PC | Roof Technical Services, Fort Worth, TX
Stephen Patterson is a licensed engineer and registered roof consultant with more than 40 years of roofing industry experience, including 34 years as a consulting engineer designing and evaluating roofs. Patterson coauthored Roof Design and Practice, Drainage Design, and Wind Pressures on Low-Slope Roofs, as well as many other technical papers and articles on roofing. He has evaluated more than 30 roof collapses.
Madan Mehta, PhD., PE | University of Texas at Arlington, Arlington, TX
Madan Mehta is a Professor of Architecture at the University of Texas at Arlington and licensed engineer. He has authored several books, monographs, and research papers, which include co-authoring roof-related books, monographs, and papers with Stephen Patterson. His 1,000-page book on Building Construction, published by Pearson Inc., is one of the two most widely used books by practicing architects, students of architecture and construction engineering in North America.
Combination of Different Insulation Technologies to Enhance Performance of Exterior Wall Assemblies
The presenter will discuss modeled thermal performance of 13 types of exterior wall assemblies for nonresidential construction. The theoretical relationship between U-value and amount of insulation was determined to validate acceptable assemblies for climate zones 4 to 7. Nontraditional assemblies using continuous exterior insulation, coupled with a dual-composition cavity insulation mixture as the thermal control layer were predicted to perform well. U-values measured experimentally (following ASTM C1363) were compared to those predicted by thermal modeling. Hygrothermal simulations were also performed to allow evaluation of the impact of the choice and positioning of the various control layers on the thermal and moisture management performance.
Jean-François Côté | Soprema, Inc., Drummondville, QC
Jean-François Côté holds a PhD in materials science from INRS-Université du Québec obtained in 1998. In his current role, he represents Soprema on technical committees of industry associations (ARMA, PIMA, SPRI) and is actively engaged in various North American standards development organizations. He is chair of the CSA A123 technical committee on Bituminous Roofing Materials, and is co-chair of the ASTM D08.04 subcommittee on Felts, Fabrics and Bituminous Sheet Materials.
New Tool to Design Above-Grade Walls For the National Building Code of Canada
A new tool has been developed to help designers meet fire provisions in the National Building Code of Canada (NBCC) when using foam plastic insulation to meet improved energy code requirements. This paper provides information for three different perspectives: 1) Provider—a manufacturer needing to educate designers about code requirements when using foam plastic insulation; 2) Fire scientist and NBCC expert—a tool to allow simple building characteristics to be entered to deliver accurate code guidance; and 3) Building designer and specifier—explains the value of the tool for the design community.
Leslie F. Yard | Dow Chemical Canada ULC, Port Coquitlam, BCLes Yard is a building science specialist for Dow Building Solutions covering Western Canada. He is a frequent educational program presenter and he has co-authored several technical articles. Yard is the current past president of the British Columbia Building Envelope Council and the co-chair of the Canadian Conference on Building Science and Technology. He has been a technical sales representative in the construction industry for over 20 years. Yard was a key organizer for Dow Chemical Canada’s sponsorship of the 2010 Olympic Games in Vancouver-Whistler.
Stan Bury | DIALOG, Toronto, ON
Stan Bury is a senior specification writer responsible for quality assurance checks and reviews of contract documents. He has written and developed master specifications for various projects and contract types using Specnique Canadian Master Specification and has experience writing LEED® specifications and specifications for Infrastructure Ontario. Bury is an active member of Construction Specifications Canada (CSC) and the director of the Hamilton Niagara Chapter of CSC . He is currently completing the CSC Registered Specification Writer (RSW) programme.
Non-presenting Coauthors: Keith Calder | Jensen Hughes, Richmond, BC; Keith Robinson | DIALOG, Edmonton, AB; and Brian Lieburn | Dow Chemical Company
Narrow Roof Design Challenges
Narrow roofs and other façade articulations are often designed and detailed with waterproofing characteristics similar to adjacent vertical wall surfaces, leaving the narrow roof assembly with insufficient waterproofing performance and risk of leakage. Horizontal surfaces in these assemblies experience environmental conditions and exposures that demand the waterproofing materials and detailing of roofs. The presenters will identify narrow roof waterproofing challenges, discuss waterproofing design and detailing considerations, and review case studies from recently completed projects. This presentation will inform designers how to approach these conditions and improve building owners’ understanding of the operations and maintenance implications of these features.
Jeffrey Kerr, PE | Simpson Gumpertz & Heger, Washington, DC
Jeff Kerr is the building technology division head for his firm. He has more than 18 years of project management and engineering experience. Kerr works on building enclosure projects, including new design consulting and renovation of existing buildings. His clients include public and private building owners, architects, and contractors. Kerr is an active member of ASTM C18-Committee on Dimension Stone.
John Sekel, PE | Simpson Gumpertz & Heger, Washington, DC
John Sekel has more than 12 years of engineering experience. His professional background includes building structural design, as well as the investigation and evaluation of building enclosures, including roofing, below-grade waterproofing, and wall and glazing systems. He focuses on building enclosure consulting for new construction projects.
Impact of Insulation Dimensional Stability on Conventional Roof Performance
Problems with creasing and ridging of styrene-butadiene-styrene (SBS) roof membranes in conventional roof assemblies have been observed in the field, along with stress concentrations and holes around fixed penetrations. Field observations have indicated that shrinkage of insulation products may put undue stress on the roof membranes and potentially affect overall durability. To investigate the potential effect of dimensional movement of insulation on the performance of SBS membranes, laboratory testing was performed on conventional roof specimens in a purpose-built climate chamber.
Lorne Ricketts, PEng | RDH Building Science, Inc., Vancouver, BC
Lorne Ricketts is a building science engineer specializing in new construction, investigation, and research work. His research work includes laboratory testing, field monitoring studies, product evaluation, hygrothermal and thermal modelling, and development of industry guidance documents. He has produced numerous publications and regularly presents at seminars and conferences throughout North America.
Nonpresenting Coauthor: Jun Tatara | RDH Building Science, Inc.
Vented Cladding Assemblies Prevent Reverse Vapor Drive and Allow Vapor-Permeable Water-Resistive and Air Barrier (WRB/AB) Membranes To Enhance Wall Assembly Drying
The demand for higher-performance wall assemblies that reduce energy consumption, increase sustainability, and effectively reduce heat, air, and water movement is altering assembly design. Low-permeance vapor barriers once thought to improve performance may, in fact, increase interior condensation and trapped moisture in the assembly. Ventilated cladding increases wall drying, reduces the wet time of absorptive claddings, and mitigates reverse vapor drive, allowing permeable WRB/AB membranes to enhance the wall assembly performance. Current design has now changed from a barrier approach to a vapor-open WRB/AB system with a vented cavity to mitigate water intrusion and enhance drying potential.
Scott D. Wood | VaproShield, Gig Habor, WA
As the senior building scientist at VaproShield, Wood provides product QA/QC, investigations/testing for new product development, and technical support. Wood is a Level III thermographer, a licensed field auditor for ABAA, and a Large Building Air Leakage Level III professional. Since the early 2000s, Wood has provided consulting and training to professionals in the areas of building science and infrared thermography. He is an active voting member for ASTM C16 and C6 committees.
Climate Change Adaptation Technologies For Roofing
Wind climate adaptation of building envelopes depends on three key factors: design, evaluation, and installation. A National Research Council of Canada (NRC) project proposes a three-step approach for climate adaptation of commercial roofs. To discuss this endeavour, 45 North American roofing professionals met at the NRC in Ottawa, Canada, on December 15, 2016. The consultation was divided into the following three areas of focus: design loads, resistance, and installation techniques. The three main aims of the consultation were to determine the following for each focus area: consensus on the current state of practice, identification of the knowledge gaps, and formulation of research and development needs. The speakers will present the overall project and discuss outcomes from the industry consultation.
“Bas” Baskaran, PhD, PEng | National Research Council Canada, Ottawa, ON
Dr. Baskaran is a group leader at the National Research Council of Canada. As a professional engineer, he is a member of RICOWI, RCI, ASCE, SPRI, ICBEST, and CIB technical committees. He is a research advisor to various task groups of the National Building Code of Canada and is a member of the wind load committee of the American Society of Civil Engineers. He has authored and /or coauthored over 200 research articles and received over 25 awards, including the Frank Lander Award from the CRCA and the Carl Cash Award from ASTM. Dr. Baskaran was recognized by Her Majesty Queen Elizabeth II with the Diamond Jubilee medal for his contribution to fellow Canadians.
Dominique Lefebvre | National Research Council Canada, Ottawa, ON Dominique Lefebvre is a research associate at the National Research Council of Canada. Her research area focuses on the development of tools and techniques for climate adaptation of commercial roofs. At present, she is working on client-driven projects on advanced insulations, roofing materials, and systems. She represents NRC at the ASTM C16–Thermal Insulation and CAN/ULC-S700A–Thermal Insulation Materials and Systems committees. She received her master’s degree in chemical engineering from the University of Ottawa.
Nonpresenting Coauthor: Sudhakar Molleti and Neal Holcroft | National Research Council Canada
Masonry Walls: Considerations Before Interior Retrofits and Window Replacement Projects
Interior retrofit projects may require repairs to the building’s exterior masonry walls due to moisture intrusion and mold, or code-mandated improvements triggered by change in use. Walls and windows may also need to be retrofitted or repaired due to age-related deterioration, moisture intrusion damage, or to improve overall building aesthetics. The decision to retrofit is typically made without properly evaluating the air, moisture, and thermal behavior of the existing wall system; the conditions of the wall system; and without establishing reasonable performance expectations/criteria of the wall system. Modifications to the exterior wall, such as new windows and flashings, vapor retarders, and thermal insulation can have detrimental effects on the wall if not properly evaluated and designed. It is important to understand the interaction of the new and existing building materials and assemblies prior to constructing modifications that can affect the behavior of the in-place systems. Regardless of the reason for retrofitting, an evaluation of the exterior wall is warranted to ensure the goals of the retrofit project are fulfilled.
Paul D. Askham, PE, BECxP, QEWI | Gale Associates, Inc., Towson, MD
Paul Askham has 24 years of experience as a structural engineer and building enclosure consultant. He specializes in building structure and façade assessment, forensic architectural and structural engineering evaluations, project management, and construction administration. Askham provides consultation and design services for renovation of building enclosure elements (conventional/post-tensioned reinforced concrete, steel/light-gauge/wood framing, foundations/underpinning, below-grade waterproofing, brick masonry, stucco, EIFS, wood siding, windows, curtainwalls, waterproofing coatings, roofs, and roof coatings).
Nonpresenting Coauthors: Derek J. Ziese, PE | Gale Associates, Inc.
Introducing Architecture Students to The Building Envelope
The education of architects and other design professionals has notoriously left them ill-prepared to deal with the challenges of building envelope design. This paper will include an exhibition of work from the two most recent student design competitions sponsored by the RCI Mid-Atlantic Chapter. Work from the third and fourth years of this competition will be shown, focusing on lessons learned by the students from a jury of building envelope consultants, architects, and engineers. Through their participation in these competitions, students began to understand building performance in terms of thermal comfort, durability, and sustainability.
Elizabeth Grant, Ph.D | Virginia Tech, Blacksburg, VA
Elizabeth Grant is an associate professor at the School of Architecture + Design at Virginia Tech. She is a registered architect, a member of RCI, and the associate director of the Center for High Performance Environments. She has published in Architectural Science Review, RCI Interface, the Journal of Architectural Engineering, and the Journal of Green Building. Her interests include environmentally sensitive design, the building envelope, and building systems integration.
It’s Not the Heat, It’s the Humidity…Or Is It?
Condensation Potential Before and After Envelope and HVAC Alterations
This presentation will explore the effects of humidity and temperature on the potential for condensation within buildings. Referencing specific evidence, a simple and effective method will be introduced for expressing condensation potential. This method will be compared with predictive results from WUFI software and ASHRAE Standard 160. The paper offers empirical evidence from temperature, humidity, and moisture content sensors installed within existing buildings, some of which have been in place, recording five-minute moisture data for over five years. Before-and-after-data will be presented that demonstrate the effectiveness of added roof insulation, air movement, and/or modifications of heating systems.
Wade Vorley, RRC, AIA | Wiss, Janney, Elstner Associates, Inc., Seattle, WA
Wade Vorley is a licensed architect and Registered Roofing Consultant. He focuses on the building envelope and provides condition surveys, repair design, and peer reviews. Vorley has a master’s degree from UC Berkeley, has been published in trade journals, and conducts research. He writes and presents technical papers at industry events, including the 2011 NRCA International Roofing Symposium in Washington, D.C. and the 2013 Waterproof Membranes Conference in Dusseldorf, Germany.
Diagnosing Window Condensation Using Absolute Humidity
Window condensation is a widespread problem that flares up every winter. The problem is complex because it involves inside and outside conditions, thermal conductivity, air infiltration, air flow, and the interactions of furnishings. When field data are collected, relative humidity (RH) is an important data set. RH readings are difficult to compare because they are temperature-dependent. By converting RH to absolute humidity (AH), which is the actual amount of water vapor present, a much-needed equalizer is created. Using AH, condensation investigators better understand moisture distribution to more effectively diagnose window condensation.
Mark Meshulam | Mark Meshulam, LLC, Northbrook, IL
Mark Meshulam’s 30-year career includes positions as a sales engineer, vice president of operations, engineering director, and owner of a contract glazing company. Meshulam has supervised shop drawings and testing in field and laboratory mock-ups and overseen the installation of millions of square feet of products. He has also provided consultation, testing, and expert work in a separate consulting division. In 2010, Meshulam founded his own firm, providing consultation, testing, and expert work. He has written 80 industry articles, which are posted at ChicagoWindowExpert.com.