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Air Barrier Association of America (ABAA)

The Center of Excellence for the Air Barrier Industry

Approved ABAA Speakers

To arrange for a presentation and to have an ABAA Approved Speaker attend your organization, please contact the Air Barrier Association of America (ABAA) at: or

Len Anastasi
Director of the Air Barrier Association of America
President, EXO-TEC Group of Companies

Len Anastasi - Chairman of the Air Barrier Association of America, President, Lennel Specialties Corporation

Len Anastasi worked in the construction industry for twenty years in masonry, waterproofing and restoration work. He currently owns EXO-TEC Manufacturing, Inc. which manufactures specialty construction products, EXO-TEC Solutions, Inc. which performs marketing work for various quality and innovative manufacturers of construction products and EXO-TEC Consulting, Inc. which performs consulting services on building enclosure issues for building owners, managers, design professionals and lawyers. In his construction and consulting work, he has performed inspections and / or repairs on over 300 buildings as well as giving expert testimony in trials and reviews on dozens of legal cases. He is a member of ASTM's E 06 Committee on Building Performance where he has authored both proposed standards as well as proposed changes to existing standards. He is a member of the Boston Society of Architects' Building Enclosure Council where he has presented on several topics and has been sponsored to speak at the Build Boston Exposition, AIA National Convention and CSI National Convention. He has authored several articles and papers on building enclosure performance and has spoken on these topics at several conventions, seminars and meeting. He is the current President of the Air Barrier Association of America as well as a member of the Construction Specification Institute ( CSI ), the International Concrete Repair Institute ( ICRI ) and the U. S. Government's Building Enclosure Technology and Environment Council ( BETEC ). He is also a guest lecturer at the Boston Architectural Center.

Wagdy Anis AIA, LEED-AP
Director of the Air Barrier Association of America
Director of Technical Resources: Shepley Bulfinch Richardson and Abbott

Wagdy Anis, AIA, LEED

Is a principal of Shepley Bulfinch Richardson and Abbott (SBRA) in Boston, and Director of Technical Resources. Mr. Anis is responsible for maintaining the high technical quality of the firm’s projects.

Mr. Anis’ professional focus is the integrity and performance of the building enclosure, from a research, design and troubleshooting perspective, as well as high performance, sustainable building design and indoor air quality. He consults regularly to building owners, architects and manufacturers regarding the design and performance of the building enclosure. He is a board member of the National Institute of Building Sciences, (NIBS), the Boston Society of Architects, The Certified Building Commissioning Professional board of the Association of Energy Engineers, and the Air Barrier Association of America (ABAA). He is chairman of the Building Enclosure Technology and Environment Council (BETEC) The BSA-IAQ committee and the Energy Advisory Committee in MA. He serves as a committee member on ASHRAE 90.1 and Technical Committee 4.4.

Mr. Anis lectures extensively on building enclosure design and indoor air quality. He has written many technical papers and articles, and is the author of Indoor Air Quality: A Design Guide, published by the Boston Society of Architects. He is considered a national resource on air infiltration and moisture control in buildings.

Laverne Dalgleish
Principal - Building Professionals Inc.

Laverne Dalgleish

Mr. Laverne Dalgleish is the Executive Director of the Air Barrier Association of America (ABAA). As such, he works to champion energy conservation in buildings while educating the building owners and designers about the benefits of energy conservation such as durability, comfort, reduced maintenance, reduced HVAC equipment costs and the positive impact on the environment.

Mr. Dalgleish travels North America on a weekly basis to educate building owners and designers on the benefits of effective and working air barrier systems in buildings. This education mission includes working with standards development organizations, training and education groups, government policy departments, and quality assurance program developers for the construction industry. Mr. Dalgleish is the Secretariat of two ISO Committees, ISO TC61 SC10 Cellular Plastics and ISO TC163 SC3 Thermal Insulation Products. He is also Chair of the ULC Thermal Performance in the Building Environment Standards Committee.

Mr. Dalgleish was the key developer of the ABAA Quality Assurance Program for the installation of air barrier systems in buildings. This program is based on ISO9000 and ISO 12576-2 but brings the ISO requirements together with practical applications for the air barrier industry.

Ryan Dalgleish
Vice President - Building Professionals Inc.

Ryan Dalgleish

Ryan has been involved in the building envelope and building performance areas of construction in both the commercial and residential sectors for over 20 years.

Much of his time is spent on technology transfer, organizational excellence and education. Ryan has been a trainer, facilitator and performed a number of management roles for over 2 decades. He is also actively involved in research, development of training curriculum, and helping industries increase their professionalism.

Ryan obtained credentials in Adult Education, Leadership and Organizational Excellence from the University of Manitoba and has been mentored and trained by some of the best building scientist's in the world.

Ryan frequently publishes papers for design and construction magazines such as Journal of Building Enclosure and Design, Construct Canada, local CSI chapters and RCI’s Interface magazine. Ryan is a frequent speaker at various technical presentations dealing with the building envelope to various building official associations, city departments and building enclosure councils across Canada and the United States, American Institute of Architects, Construction Specifications Institute and a number of local home builder associations.

Lance Robson
Director of the Air Barrier Association of America
Principal, Building Envelope Technologies Inc.

Lance Robson

Lance Robson is a principal at Building Envelope Technologies Inc., a consulting firm for the building enclosure industry. Mr. Robson brings over 20 years of experience in building enclosure design, restoration and investigation to the Air Barrier Association of America. His areas of expertise include roofing, wall cladding, curtain wall, fenestration, masonry and concrete repair, waterproofing and air barriers. Mr. Robson established Building Envelope Technologies Inc (BET) in 2000. He later co-founded Robson and So Engineering, Inc., a multi-discipline engineering firm. Prior to establishing BET, Mr. Robson managed the Building Envelope Department of CID Associates in Boston, a 95 person firm providing multi-disciplinary engineering and architectural services to commercial, industrial and institutional clients.

Mr. Robson actively maintains his expertise through participation in professional societies and is currently working to establish air barrier system standards through ASTM. His professional affiliations include AIA, BSA, ASTM and E-6.

Peter Spafford
Quality Assurance Manager - Building Professionals Inc.

Peter Spafford

Peter Spafford has been involved in the energy conservation and building performance industry for 14 years. Mr. Spafford has been an instructor in building science and building envelope for the past 10 years and has taught hundreds of installers, building officials and contractors across the country. Mr. Spafford became the national training manager for BPC and oversaw the delivery and facilitation of upwards of 50 training programs a year and coordinated upward of 50 – 70 project managers and instructors in delivering 6 week to 6 month term training programs in energy efficiency. Mr. Spafford has also spent a tremendous amount of time in the field performing 3rd party inspections on behalf of government, quality assurance providers, utilities and warranty programs. Mr. Spafford currently is the quality assurance program manager for BPC. He has been involved in both the development and compliance aspects of the program for a number of initiatives in both the residential and commercial building markets.

Timothy A. Mills, PE, LEED AP
Licensed Field Auditor of the Air Barrier Association of America
President, TAM Consultants

Timothy A. Mills

Mr. Mills is the president of TAM Consultants, a firm specializing in providing Building Enclosure, Air Barrier Consulting, Forensic Engineering, Property Inspections, Structural Engineering and Design and Project Management Services for the built environment. Mr. Mills brings 20+ years of experience as an engineer in the building industry. He is a licensed Professional Engineer, a LEED AP, and a Licensed Field Auditor for the Air Barrier Association of America (ABAA). Mr. Mills' experiences cover a wide range of public and private projects of all sizes. Project types include commercial, Federal, municipal, educational, institutional, single and multi-family residential, historical, industrial and manufacturing facilities, laboratory, parking, green buildings and retirement facilities.

Roy Schauffele, FCSI, CCPR, LEED Green Associate
Director of the Air Barrier Association of America
President, Division 7 Solutions, Inc.
Technical Director & Owner, STS Coatings Inc.

Roy Schauffele

Roy Schauffele, FCSI, CCPR, LEED Green Assoc. is the Technical Director and an owner of STS Coatings Inc. He is also the founder and President of Division 7 Solutions, Inc. a multi-state multi-office Architectural Rep firm. He is an internationally published author and speaker in the fields of roofing, insulation and waterproofing. Mr. Schauffele has served as an elected and an appointed Official in the State of Texas. Additionally, he has served on the Board of Directors for the Construction Specifications Institute and on a variety of Institute Committees.

William R. Nash, P.E.
Senior Project Manager, Whitlock Dalrymple Poston & Associates / Manassas, VA
Chair of the ABAA Terminations & Flashing Committee

William R. Nash

William R. Nash provides 38 years of professional experience in the construction industry which includes construction engineering and project management. Mr. Nash is the QA Director with divisional responsibilities, as well as , the provision of technical services to three dozen concurrent projects. His management expertise is in the construction of building projects which includes estimating, peer reviews of plans and specifications, development and assembly of site specific quality plans, providing field construction quality control / quality assurance inspections and testing, building condition assessments and forensic investigations. He was actively involved on the management of multiple concurrent construction operations with oversight of safety, estimating, subcontract prequalification and solicitation, contracts, change orders, budget , field quality control, scheduling and owner/architect/engineer liaison and project management. Mr. Nash is a member of ACI, ABAA, ASCE, ASTM, ASHRAE, BETEC, NIBS, TMS and serves actively on multiple national standards committees within ACI, ASCE, and ASTM . He is a registered Professional Engineer in Missouri, Illinois, Indiana, Virginia and Texas.

Terry Brennan

Terry Brennan

Terry Brennan is a building scientist and educator. He has studied buildings since the 1970's. Because of his background in physics, biology and building construction, Mr. Brennan combines theory and practice in a unique and integrated way. Mr. Brennan has provided research, training, curriculum development and program support for the EPA, building owners and managers, individual homeowners, and several state health departments. He is currently the chair of the Air Barrier Association of America's Whole Building Test Committee. He is a member of ASHRAE 62.2 committee on ventilation for low-rise residential buildings. He served as a consultant to the National Academies of Science Committee on Dampness and Health in Buildings.

John Edgar

John Edgar

John Edgar is the Technical Director, Canada, Sto Corp. He has been in the construction industry for more than 30 years and has worked with Sto Corp. in innovative EIFS and air barrier research for more than 20 years. John is Vice - Chair, EIFS Council Canada; also a member of the Air Barrier Association America (ABAA) Technical Committee; Atlanta Building Enclosure Council and the Ontario Building Envelope Council. He served on the Standing Committee on Environmental Separation, National Building Code of Canada for 13 years during the development of objective based codes. He is Chair of the ULC S 716 EIFS Standards Task Group and Secretary of ISO TC163/SC03 . He has spoken at many conferences including Institute of Roofing, Waterproofing, and Building Envelope Professionals (RCI), Construction Specification Institute (CSI), the American Institute of Architects (AIA), AIA training, OBEC and BEC seminars in Canada and the USA, Architectural Record’s Innovation Conference, and Construct Canada. John received his diploma in Architectural Technology (Building Science) from Ryerson University in Toronto.

Jeff Diqui
Building Enclosure Specialist
Architectural Engineer
Sto Corp.

Jeff Diqui

Jeff Diqui holds a Bachelor of Science Degree in Architectural Engineering with a major in Structural Engineering. He has more than 20 years of experience most of which includes forensic investigations related to moisture intrusion and structural related problems, structural design, building condition assessments, development of repair / rehabilitation designs, and construction observations.

Project work was primarily related to the building envelope including various facades, roofing, and/or waterproofing systems. Jeff's focus is on being a consultative resource to architects, engineers, specifiers, building envelope consultants, contractors, and code officials related to building science principles. Jeff is a frequent lecturer on topics nationally regarding the importance of maintaining continuity of air, water, vapor, and thermal controls within the building enclosure.

Jeff is actively involved with the building science and architectural / engineering professions. He is a member of the Building Enclosure Council (BEC), Construction Specifications Institute (CSI), The Institute of Roofing, Waterproofing, and Building Envelope Professionals (RCI), Air Barrier Association of America (ABAA) and the United States Green Building Council (USGBC). Jeff is Program Director for the Building Enclosure Council - Chicago Chapter and on the Air Barrier Association of America (ABAA) Terminations and Flashings Committee.

Robert Popp, CSI, CCPR

Robert Popp

Robert Popp, CSI, CCPR is an owner of STS Coatings, Inc. He is also the Vice President of Division 7 Solutions, Inc. a multi-state, multi-office Architectural Rep firm. He is a graduate of Texas A & M School of Architecture with his expertise being in Environmental Design. He is a published author and speaker in the fields of insulation and waterproofing. He currently is a member of the Air Barrier Association The Voice Committee and is chairman of the Certification Management Committee. He also serves on the board for both the Dallas and Fort Worth chapters of the Construction Specifications Institute.

Steve Mort
Technical Application Specialist
Tremco Commercial Sealants & Waterproofing Division

Steve Mort

Steve Mort holds Bachelors Degrees in Physics and Mathematics. He is currently an active member of ABAA Voice Committee, ABAA Terminations & Flashings Committee, Cleveland B.E.C., R.C.I. and various ASTM E06 sub-committees. Steve is the technical product expert on Tremco’s Air Barrier and below grade waterproofing systems giving him extensive knowledge to the entire building envelope. He is an International Concrete Repair Institute Grade 1 Moisture Slab Testing Technician as well as an Infrared Training Center Level 1 Thermographer. Mr. Mort has assisted in building envelope design, material compatibility, sequence of installation, as well as investigative analysis.

Dan Crates
Building Enevlope Specialist
Sto Corp.

Dan Crates

Dan Crates is the Building Envelope Specialist for Sto Corp. He provides sales, training and technical assistance in the application of fluid applied air barriers, EIFS, stucco and high performance coatings in Oregon, Washington and Alaska.

As a member of the Oregon and Washington Chapters of The Northwest Wall and Ceiling Bureau, CSI chapters in both states and of course SEABEC, Dan brings over 25 years in the construction industry. As a Construction Manager for several years before finishing his degree in Project Management, Dan has been able to apply these valuable on the job skills to the design and consulting environment in his current technical sales role at Sto for the last 5 years.

Ryan Moore
Green Insight, High Performance Building Services
LEED for Homes Green Rater, HERS Rater, ABAA Field Auditor, BPI Multifamily Building Analyst, CEAIT, LEED AP BD&C, Construction Documents Technologist

Ryan Moore

Ryan has focused on sustainability issues through his work, studies, and volunteer activities since 1987 and brings the breath of his knowledge to bear on a variety of projects including LEED certification and energy audits of existing buildings. He began his career in building on a residential framing crew where he gained an intimate knowledge of the construction process. At Green Insight, Ryan prepares performance models (including daylighting), coordinates with project teams to optimize resource use, interfaces with construction teams to verify compliance issues, performs LEED for Homes Green Rater and HERS Rater services, and completes energy audits of existing residential and commercial buildings. Ryan has served as Green Rater and/or HERS Rater on over 40 projects, certifying nearly 600 units including the world’s first international LEED home (Sailfish Home, Cayman Islands). Ryan currently serves on the Existing Homes Task Force for New Mexico which is working on the development of incentives for energy upgrades of existing homes.

Stephen Shanks
Chief Operating Officer
CTI Consultants, Inc. (CTI)

Stephen Shanks

Mr. Stephen Shanks is the Chief Operating Officer of CTI Consultants, Inc. (CTI), a full-service engineering consulting firm with its corporate headquarters in Richmond, Virginia, and branch offices throughout the Mid-Atlantic, Carolinas, Southeast, and Central Gulf Coast with special project experience nationally and internationally. He has been responsible for and in charge of engineering services for over 30 years providing a multi-disciplinary approach to the integration of engineering principles and technology to building design and construction. Air Barrier consulting experience related to Design, Inspection, and Performance Verification Testing including Whole Building Air Tightness Testing in accordance with applicable USACE, LEED, ASHRAE 189.1, and ASTM E779 requirements. Other related experience includes Commissioning of New and Existing Buildings; Building Enclosure Design, Inspection, and Testing to determine conformance with ASTM and AMAA requirements; and providing Expert and Forensic Services.

Pam Jergenson, Senior Building Envelope Consultant, INSPEC

Pam Jergenson

Pam Jergenson has been in the construction industry for nearly 30 years, she came to Inspec in 1991. As a senior project manager in the exterior wall department, she works on a variety of wall systems and their transitions in the building envelope: air barriers, masonry, stucco, and EIFS. She is a member of Air Barrier Association of America (ABAA), ASTM, The Masonry Society (TMS), Building Envelope Committee of AIA/MN, and Construction Specifications Institute – Minneapolis/St. Paul Chapter. Pam completed the Air Barrier Association of America’s certification training for field auditing air barrier installation in August 2012 and has been active in the Terminations and Flashings Committee. She has been a TMS member for more than 15 years, focused on the Existing Masonry Committee as the current Task Chair of the Façade Inspection Guidelines. Pam has been a Certified Construction Specifier (CCS) and Certified Construction Contract Administrator (CCCA) for over 10 years. Her responsibilities at Inspec are managing and conducting building envelope surveys and forensic investigations, third party design review and construction observation, restoration and rehabilitation design, and leak testing. An increasing portion of her work is third party design review and construction observation of air barriers. She is trained and performs hygrothermal modeling of the building envelope. Pam’s duties include extensive report and specification writing, design document preparation, construction observation, and construction administrative services for building envelope projects involving multiple systems. She has written the masonry standards for Minnesota State Colleges and Universities and several articles for national publications, CSI-MSP chapter newsletter, and Inspec’s newsletter. Ms. Jergenson also trains personnel and speaks to groups on a variety of topics: exterior wall materials, building envelopes, specifications, construction observation, and related building codes.

Nathan Weibel, Technical Services Specialist, Henry Company

Nathan Weibel

For the last five years Nathan Weibel has been the Northwest Technical Service Specialist for the Henry Company’s Building Envelope Systems Division. Mr. Weibel provides product training and technical assistance in the application of Henry air barrier, waterproofing, roofing and high performance coating systems throughout the Western United States. Nathan also works closely with design professionals and is heavily involved with Henry’s Building Science Group which specializes in specification work.

Mr. Weibel is an active member of CSI, RCI and SEABEC. Nathan has over 18 years in the building envelope construction industry. With this well rounded background experience, Nathan has been able to provide valuable insight to contractors, design professionals and building envelope consultants.

Andrew M. Black, LEED AP, MPM, CIAT, FAAPM

Andrew Black

Mr. Black has worked in the construction industry for 25+ years. His experience began as a carpenter in the industrial and commercial sides of the business and led to the materials science sector after years of study. He has studied building enclosure and engineering technology for the past 15 years and tested dozens of private, municipal and federal structures pursuant to ACOE, ASHRAE, LEED and ASTM protocol. His management expertise includes, peer reviews of plans and specifications, estimating, development of project specific quality plans, field construction quality control / quality assurance inspections and testing, building condition assessments and forensic investigations. Mr. Black has been actively involved in several large scale construction projects in which he has delivered envelope design and construction consultation services as well as forensic evaluations and whole building envelope testing including thermography diagnostic services. He has also engaged in expert witness and materials analytical work in relation to product compliance and failure issues.

Brian Stroik, Manager - Building Envelope Solutions Team at Tremco Sealants & Waterproofing

Brian Stroik

Brian Stroik is a recognized industry leader in the construction of energy efficient, sustainable and durable buildings.

Brian works with key industry organizations – including the Air Barrier Association of America, the National Building Enclosure Council, and the Building Enclosure Technology and Environmental Council (BETEC) – on research and education regarding building enclosures, energy efficiency, and retrofitting and upgrading existing building enclosures.

Brian is a frequent speaker on the subjects of commissioning the building enclosure (BECx), quality in construction, and mock ups / first run studies. Brian has also chaired numerous speaker sessions at national conferences and hosted roundtable discussions. He holds the following industry positions and affiliations:

  • Past Chair, National Building Enclosure Council (NBEC)
  • Vice Chair and a Director, Air Barrier Association of America (ABAA)
  • Advisory Board Member, Building Enclosure Technology and Environmental Council (BETEC a Council of the National Institute of Building Sciences - NIBS), Washington, DC
  • Founder and Chair, Building Enclosure Council of Wisconsin (BEC-WI)
  • Voting member of ASTM E06 – Building Performance
  • Senior Member, American Society of Quality (ASQ)
  • Certified, American Society for Healthcare Engineering (ASHE)

White papers by Stroik on the subjects of building energy efficiency and building enclosure design, among others, have been published in The Journal of Energy Efficiency & Reliability, The Journal of Building Enclosure Design and SprayFoam Magazine.