As energy codes become more demanding and construction standards continue to evolve, air tightness testing in Boise has become a critical step in new construction projects. Whether you’re building a commercial facility, multifamily housing, or a custom home, verifying the performance of the air barrier system ensures compliance, energy efficiency, and long-term durability. Understanding how air tightness testing works and what standards apply in Idaho can help your project stay on schedule and avoid costly rework.
Why Air Tightness Testing Matters in Boise
Boise’s climate includes hot, dry summers and cold winters, which makes controlling air movement essential for energy performance and indoor comfort. Excess air leakage can lead to:
- Higher heating and cooling costs
- Drafts and comfort issues
- Moisture intrusion within wall assemblies
- Reduced HVAC performance
- Failed inspections
Proper air barrier testing in Boise confirms that the building enclosure is sealed according to design specifications, preventing uncontrolled air infiltration and exfiltration.
What Is Air Tightness Testing?
Air tightness testing measures how much air leaks through a building’s envelope under controlled pressure conditions. This is typically done using blower door equipment that pressurizes or depressurizes the building to a specified pressure difference most commonly 50 or 75 Pascals.
The test determines the building’s air leakage rate, which may be expressed as:
- Air Changes per Hour (ACH50)
- Cubic Feet per Minute (CFM)
- CFM per square foot of enclosure area
These results are then compared to the performance targets outlined in the project specifications or local energy code requirements.
Common Testing Standards Used in Boise
Several recognized testing standards are used for air tightness testing in Boise, depending on the project type and size.
ASTM E779 Testing in Boise
ASTM E779 is a multi-point whole-building air leakage test method commonly used on commercial and institutional buildings. It involves measuring air leakage at multiple pressure points to generate a leakage curve. This method provides highly accurate and defensible results and is often required for larger commercial projects.
ASTM E1827 Testing in Boise
ASTM E1827 is a single-point test typically performed at 50 Pascals. While less detailed than ASTM E779, it is commonly used for residential and smaller commercial projects.
IECC Energy Code Requirements
The International Energy Conservation Code (IECC), adopted by many jurisdictions, often mandates air leakage verification. Depending on the building type, compliance may require whole-building testing or component-level verification.
Working with a firm experienced in air barrier testing in Boise ensures that the correct standard is applied and documented properly.
What to Expect During Testing
When scheduling air tightness testing in Boise, preparation is essential. Here’s what typically happens:
1. Pre-Test Coordination
Your testing provider will review drawings and confirm that all exterior envelope components are installed, including windows, doors, air barriers, and roof assemblies.
2. Equipment Setup
Calibrated blower door fans are installed in exterior openings. Digital gauges measure pressure differences between inside and outside conditions.
3. Pressurization
The building is pressurized and/or depressurized to the required test pressure. Airflow required to maintain that pressure is measured and recorded.
4. Leakage Investigation
If the building does not meet target performance, technicians may use infrared imaging, smoke pencils, or fog to identify leakage pathways.
5. Reporting
A detailed report is issued documenting testing procedures, pressure readings, calculations, and final compliance status.
Common Causes of Air Leakage Failures
Even well-constructed buildings can fail initial testing due to:
- Incomplete air barrier transitions
- Unsealed mechanical or electrical penetrations
- Poorly sealed window installations
- Roof-to-wall connection gaps
- Elevator shafts or stairwell leakage
Early coordination with your testing team can help avoid these issues.
Final Thoughts
As energy efficiency standards continue to tighten, air leakage verification has become a non-negotiable part of new construction in Boise. Whether your project requires ASTM E779, ASTM E1827, or IECC compliance testing, working with an experienced air tightness testing provider ensures accurate results and smooth inspections.
If you’re planning new construction in the Boise area, incorporating professional air tightness testing in Boise early in the project will help you meet code requirements, improve performance, and deliver a building that performs as designed for years to come.