What are the best practices and standards for building envelope commissioning and testing?

1 Why commission and test the building envelope?

Commissioning and testing the building envelope is not only a good practice, but also a requirement for some building codes and certification programs, such as LEED, ASHRAE, and IECC. Commissioning and testing can help verify that the design, installation, and operation of the building envelope meet the project goals and specifications, and comply with the applicable codes and standards. Commissioning and testing can also identify and correct any defects, errors, or issues that may compromise the performance, quality, or durability of the building envelope.

3 What are the methods and tools for building envelope testing?

Building envelope testing can be performed using various methods and tools, depending on the type, location, and purpose of the test. Air leakage testing measures the amount of air that leaks through the building envelope with a blower door or fan pressurization device, which can help evaluate air tightness, energy efficiency, and indoor air quality. Water penetration testing simulates the effects of wind-driven rain with a spray rack or chamber to detect water infiltration or leakage. Thermal imaging uses an infrared camera or thermographic scanner to capture temperature variations on the surface to identify thermal bridges, insulation gaps, or heat loss areas. Moisture testing uses a moisture meter or probe to measure moisture content or relative humidity in building envelope materials to assess the risk of mold, rot, or corrosion.

4 What are the benefits of building envelope commissioning and testing?

Building envelope commissioning and testing can provide many benefits for your building design project, such as improving the thermal insulation, energy efficiency, and indoor comfort of the building, enhancing the quality, durability, and aesthetics of the exterior components, preventing or minimizing costly repairs or litigation issues, and increasing the value, reputation, and satisfaction of the project. These tests can ensure proper installation and performance of the building envelope components and identify any defects or errors in the design or construction. As a result, you can meet or exceed project goals, specifications, codes, and standards.

5 How to find a qualified commissioning agent or authority?

Finding a qualified commissioning agent or authority requires research. You can check the references, portfolios, and certifications of potential candidates to ensure they have the expertise, experience, and credentials to conduct the commissioning and testing process for the building envelope. Additionally, you can consult with industry associations such as the Building Commissioning Association (BCxA), the National Institute of Building Sciences (NIBS), or the Building Enclosure Council (BEC) for accredited or endorsed members. Finally, you can ask for recommendations from your peers, colleagues, or clients and look for positive feedback and reviews.