Energy Audit-Comparing a Great Blower Door Test to a Code Minimum Test

I recently blower door tested the tightest new home I have tested to date.  .82 air changes per hour at 50 pascals (ACH50), nearly one-quarter of the code required 3 ACH50 requirement.  After the test, the builder and I decided to open a window to see how much additional leakage it would take to get the home to the code minimum 3. Continue reading “Energy Audit-Comparing a Great Blower Door Test to a Code Minimum Test”

Construction Design-Simple Air Sealing Strategies

I built my first home for a customer back in 2000, I’ve learned a lot since then.  One of the areas I’ve learned the most is in building tightness.  These days I’m working more as an energy auditor.  Conducting code compliance blower door testing on new homes and conducting energy audits, some with blower door testing on older homes.  I get to see where homes leak. Continue reading “Construction Design-Simple Air Sealing Strategies”

Building Science-“Breathe”

In this blog, I’m going to discuss building tightness and the code dealing with air leakage.  The 2012 International Residential Code for One and Two-Family Dwellings is the current code in force for the state of Minnesota at the time of this blog.  Chapter 11 deals with energy conservation, what most in the building industry call the energy code.  The code on building air leakage states: Continue reading “Building Science-“Breathe””