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  May 20, 2021 02:00 pm EDTWhy a Liquid-Applied Membrane May Be Your Next Roof

  Credits: 1 AIA/HSW; 0.1 IACET CEU*; 1 IIBEC CEH

  Coatings aren’t just for maintenance. Liquid-applied membranes (LAM) are being used more and more as the weatherproofing layer of a roof system for new construction, reroofing and re-covers. While a…

  Credits: 1 AIA/HSW; 0.1 IACET CEU*; 1 IIBEC CEH

  Coatings aren’t just for maintenance. Liquid-applied membranes (LAM) are being used more and more as the weatherproofing layer of a roof system for new construction, reroofing and re-covers. While a LAM can use the same materials as a traditional roof coating, they are much different. The building code (finally!) separates liquid-applied coverings and roof coatings; the specifics will be provided. The types of materials used for LAMs and their material characteristics—focusing on polymer-based products—will be examined. Roof system design, approval listings, as well as proper application methods will also be discussed. This presentation will help anyone involved in the design and specification, installation, or ownership of LAM-based roof systems.
  
  Learning Objectives:
   

  1. Discuss the building code requirements for new construction, reroofing and re-covers for liquid-applied membranes and the related definitions within the codes.
  2. Classify material types and discuss the characteristics of common materials used as liquid-applied membranes and when to use them.
  3. Describe the testing requirements and assembly components (including substrates) for liquid-applied membranes when used as part of an approved roof covering.
  4. Discuss the specific steps for proper application of liquid-applied membranes and recognize the importance of proper substrate preparation.

   

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  May 26, 2021 02:00 pm EDTThe Impact of Permeance on Condensation in Exterior Wall Assemblies

  Credits: 1 AIA/HSW; 0.1 IACET CEU*; 1 IIBEC CEH

  This presentation discusses the impact of permeance on condensation in exterior wall assemblies, highlighting the ASTM E96 standard and permeance testing. The presentation also explores the influenc…

  Credits: 1 AIA/HSW; 0.1 IACET CEU*; 1 IIBEC CEH

  This presentation discusses the impact of permeance on condensation in exterior wall assemblies, highlighting the ASTM E96 standard and permeance testing. The presentation also explores the influence of permeance on drying via hygrothermal modeling.
  
  Learning Objectives:

  1. Discuss how vapor permeance is measured using standard test method ASTM E96 and why results obtained from procedure A may not be compared to results obtained from procedure B.
  2. Explain why a highly permeable water-resistive barrier/air barrier is not as effective in a wall assembly if the vapor diffusion is restricted by other materials of the assembly.
  3. Understand that for wall assemblies insulated in the stud space only, using water-resistive barriers/air barriers with vapor permeances lower than 5 Perm or higher than 20 Perm increase the risk of condensation and mold growth.
  4. Describe how for split-insulated wall assemblies, the vapor permeance of the water-resistive barrier/air barrier has little or no impact on the hygrothermal performance of the assembly.

   

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  June 3, 2021 02:00 pm EDTExtending the Life of the Roofing Assembly

  Credits: 1 AIA LU/Elective; 0.1 IACET CEU*; 1 IIBEC CEH

  Air barriers are an extremely important component of a high-performance building enclosure system. For the most part, these systems are non-maintainable components and repairs can typically …

  Credits: 1 AIA LU/Elective; 0.1 IACET CEU*; 1 IIBEC CEH

  Air barriers are an extremely important component of a high-performance building enclosure system. For the most part, these systems are non-maintainable components and repairs can typically only be made with the removal of the exterior cladding system. To ensure a performing system, proper design, detailing and ultimately the proper installation of these systems is extremely important. You have one chance to get it right. Learn about important design considerations, how to properly detail critical interfaces, key items to include in your specifications, proper installation techniques, quality control and testing parameters for a variety of air barrier systems in use today.

  Learning Objectives:

  1. Discuss how air barriers are part of a high-performance building and how they control air and moisture movement, improve insulation performance and reduce energy needs of buildings.
  2. Review key design considerations, critical interfaces for continuity, material performance requirements and specification language for the proper design and selection of the air barrier assembly.
  3. Identify the typical installation requirements of a variety of air barrier materials and assemblies and common installation issues observed in the field.
  4. Discuss the importance of proper construction sequencing, coordination of sub-trades, testing and inspection criteria, how to identify installation defects and remedial action required during the construction phase.

   

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