Build a Better Home at Lower Cost by Controlling Infiltration
Ken Lynch of Tremco Barrier Solutions
Builders fear that building to the new IECC Energy and or other advanced energy codes is cost prohibitive, but this fear is unwarranted. In most cases, they can meet the advanced energy codes at little additional or even reduced construction cost. The importance of three items in meeting the energy codes at the lowest cost are stressed: 1) using the performance path to show compliance with the energy code, 2) use the cost-effective performance trade-offs enabled by reduced air infiltration to lower construction cost, and 3) use more effective means of air sealing than have been used traditionally to reduce the level of infiltration. Specific examples of how lowering air infiltration compares to other alternatives for lowering energy use are given, including increased insulation values and reduced window U-values.
The presentation also discusses the impact of reduced air infiltration on moisture performance as well as energy use. The question of whether the dwelling is "too tight" is specifically addressed and clarified, giving the audience an understanding of the relative importance between the movement of moisture by vapor diffusion and the movement of moisture by air infiltration. Specific examples are given to aid understanding.
This presentation also reviews some of the key changes present in each version of the IECC code (2009, 2012 & 2015). AIA Accredited Presentation (1 hour, 1 credit)
We hope you'll join us!