Per Sam Rashkin, the former lead of the EPA’s Energy Star Program for new homes and now the DOE’s lead for the DOE’s Energy Star for Existing Home Program and the New Builders Challenge Program, “We are, under our existing building codes, promoting the construction of homes that are going to be obsolete within 3 years primarily because of water management issues”.
The course is intended to provide an overview for energy auditors and raters to supplement their knowledge on envelope design and IECC 2012 requirements as related to water management in the envelope.
We will cover all aspects of exterior water management and water intrusion caused by:
· Gravity or air pressure differences
· Liquid water moving by capillary action through porous building materials
· Water transported via air movement
· Water vapor transfuses through building assemblies
For each of the topics listed above, we will review the underlying root cause and what can be done to fix it in both existing and new homes.
In addition we will also discuss the design of envelope (from both a thermal and air barrier perspective) to address interior moisture concerns caused by condensation via dew points. We will discuss the calculation of dew points along with strategies to help eliminate condensation in window and wall assemblies.