Session 803

November 1, 10:00 - 11:00 a.m.

New Hampshire Room (Lobby Level)

Doing Better for Less:  R-30 Walls and Beyond.  High Performance, Less Cost

Part 2 of 2

William A. Turner

P.E.

Turner Building Science & Design - Harrison, ME

David Johnston

Builder, Adjunct Professor of Construction

David Johnston & Co. - Gorham, ME

Session Description 

 

There are many ways to design and construct a high performance wall system that will meet or exceed the 2015 International Energy Conservation Code. This presentation will focus on a wall system that the presenters believe is the most cost-effective approach in cold climates such as Maine, with cold, wet winters and hot, humid summers. The approach reduces the likelihood of condensation occurring both during a winter construction period and also during long-term occupancy. It has been implemented in a variety of building types and was first used in 1981 by the presenters.

 

Part One of the presentation (Session #703 at 8:30 a.m.) will deal with the construction of the wall system, the reasons for the approach, and cost of the approach versus other, more complicated systems.  Part Two of the presentation (Session #803 at 10:00 a.m.) will focus on how to do a basic dew point calculation to determine where dew point might occur within the wall system under discussion, as well as within other wall systems or building components.    More advanced methods of Dew Point analysis will also be discussed. 

Attendees will come away with a basic understanding of the risk of failure involved with constructing walls in cold climates when Building Science basics are ignored or misunderstood. 

Attendees may attend one or both halves of this session (Sessions #703 and #803).  Participant questions will be limited however to the content being covered at each specific session.

 

Presentation Categories:  Building Design & Construction; Energy Efficiency; High Performance Buildings; Other

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Presentation Level: Intermediate

About William Turner

 

Mr. Turner is the President Emeritus of Turner Building Science & Design, based in Harrison, Maine. He has a lifetime of experience with building diagnostics and construction. His original training was a B.S. and M.S in Mechanical Engineering. For 40+ years he has been involved with further learning with the designed, construction, commissioning, and expert witness for a wide variety of building systems located throughout North America. He has been asked to solve building science and air quality issues and conducted a variety of testing in most types of buildings and situations. He and David Johnston have successfully delivered many workshops for MIAQC and others.

About William Turner:

Mr. Turner is the President Emeritus of Turner Building Science & Design, based in Harrison, Maine. He has a lifetime of experience with building diagnostics and construction. His original training was a B.S. and M.S in Mechanical Engineering. For 40+ years he has been involved with further learning with the designed, construction, commissioning, and expert witness for a wide variety of building systems located throughout North America. He has been asked to solve building science and air quality issues and conducted a variety of testing in most types of buildings and situations. He and David Johnston have successfully delivered many workshops for MIAQC and others.

About David Johnston:

 

David Johnston is president of David Johnston & Co in Gorham, Maine.  After forty years of designing and building high performance homes in Maine he has decided to concentrate on teaching and consulting.  He is an Adjunct Instructor at Central Maine Community College for the past eight years, teaching Building Science and Plan Reading & Construction Cost Estimating.  He holds a Bachelor of Science degree in Industrial Education.  He serves on Advisory Committees for the Building Construction programs at CMCC and at Westbrook Regional Vocational Center.

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