Through-Wall Flashing: Compatibility Sustainability And Performance

Craig Wetmore, CSI; President, York Manufacturing, Portland, ME

Flashing

Continuing Education

AIA: 1.5 LU/HSW/SD
SC Building Council: 1.5 hrs
GBCI: 1 hr
Certificates by Request
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Craig WetmoreCraig Wetmore has over 20 years of experience in the building industry. He has been the President of York Manufacturing since 2009. He has a concentrated knowledge in through-wall flashings, moisture management and wall components. Craig is active in building community where he is a member of CSI, RCI, USGBC, ASTM and the ABAA. He serves as Secretary for the Maine CSI Chapter and is a member of ABAA’s Flashings and Terminations Committee. He is recognized nationally as an expert on through-wall flashings’ compatibility with air barriers and insulation products, lifecycle costs and installation of all different types of through-wall flashings. Craig and the York team are leaders in the devlopment of new products.

 

Summary

Through-wall flashing is a water shedding device to divert water from the cavity to the exterior of the building. To provide durable buildings, we need an informed position on the design attributes of flashing:

  • Imperviousness to water
  • Resistance to damage during construction—puncture, tear, sunlight, and fire Prevention of discoloration to exterior cladding
  • Compatibility with adjoining adhesives and sealants (and everything else it contacts)
  • Matching durability of flashing to anticipated life of the building

Topics

  • Understand the purpose of through-wall flashing
  • Performance criteria used to specify through-wall flashing
  • Understand the attributes of commonly used flashing materials
  • Understand compatibility issues between cavity wall components