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Continuous Exterior Insulation & Moisture Management – Applied Building Science for Residential Building Enclosures

May 22 @ 9:00 am - 4:00 pm


California has set goals for zero net energy buildings, leading towards zero carbon buildings and greenhouse gas reductions. Across the trades and professions, California’s buildings workforce needs in-depth information to design and construct highly energy and water-efficient homes that are comfortable for occupants. This intermediate level training, led by internationally recognized expert John Straube of RDH Building Science, will focus on building enclosure issues. John will take an in-depth look at continuous exterior insulation, what it achieves, how it should be attached to structure, and how it affects other components such as windows and their installation and flashing. John will also look at air sealing, its relation to management of possible moisture issues, and different approaches to provision of filtered air for ventilation.

The objective of this course is that at the conclusion, participants can:

  • Rank rigid insulation made from stone wool, expanded polystyrene, extruded polystyrene, and polyisocyanurate in terms of R-value per inch, vapor permeability (impermeable/ Class I Vapor retarder; semi-impermeable/ Class II Vapor retarder; semi-permeable/ Class III Vapor retarder, or permeable), and combustibility.
  • Identify the ‘condensing surface of interest’ in a drawing of an exterior wall assembly, can identify two approaches to the location where insulation is installed, one that lowers the safety against condensation and one that increases it, and can explain the mechanism by which air leakage increases the likelihood of liquid water collecting in a wall assembly.
  • Participants can identify the location for the water and air control layers that simplifies the sequence of installation for “inset” and “outset” windows in a wall assembly with continuous exterior insulation.
  • Participants can correctly restate how the system consisting of a long screw attached to studs through furring strips and rigid insulation works as a truss rather than the screw alone acting as a cantilever.


May 22
9:00 am - 4:00 pm
Event Category:


Sonoma County Permit and Resource Management Department
2550 Ventura Ave
Santa Rosa, CA 95403 United States
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(707) 565-1900