BLOWER DOOR TESTING – WHAT ARE THE NYS CODE REQUIREMENTS?

Over the last 20 years, Taitem’s team has performed blower door tests on countless buildings. Blower door testing supports optimal system design and provides paybacks. Blower door testing is also required in New York.

New York State Energy Conservation and Construction Code (NYS ECCC) sets minimum requirements for air tightness. Both residential and commercial buildings are required to have a continuous air barrier to prevent air passing through the building’s thermal envelope.

BUILDINGS DEFINED (by NYS ECCC)

RESIDENTIAL BUILDINGS
Detached one- and two-family dwellings and multiple single-family dwellings (townhouses) as well as Group R-2, R-3, and R-4 buildings that three or fewer stories above grade.

COMMERCIAL BUILDINGS
Any building that is not considered a residential according to the above definition.

COMPLY WITH CODE

To measure that the air leakage rate of the building thermal envelope is not greater than 0.40 cfm/ft2 at a pressure difference of 75 Pascals, commercial buildings must:

1.  Meet a list of prescriptive requirements OR
2. Perform a blower door test

Residential buildings must be tested and verified as not having an air leakage rate exceeding three air changes per hour at a pressure difference of 0.2 inch w.g. (50 Pa), also known as 3 ACH50. Note: There are no changes in the 2018 International Energy Conservation Code (IECC) regarding air barrier requirements, but we can expect enforcement of the NYS ECCC to increase.

WHY IT’S IMPORTANT

Blower Door Testing can help identify building air tightness issues which, in turn, can

• reduce energy usage due to air leakage,
• improve occupant comfort by reducing drafts caused by air leakage, and
• reduce moisture condensation problems.

While commercial buildings can comply with code without blower door testing, blower door testing ensures that the construction is adequate and can be key part of envelope commissioning.

CATHING LEAKS EARLY

Blower door testing is an excellent diagnostic tool. You can locate and find leaks in the building envelope during the test so they can be properly addressed before these areas are covered. With higher levels of insulation, less heat is being driven through walls, reducing drying potential.

Air leakage is a major source of water vapor transport. Reducing air leakage is critical to ensuring that moisture doesn’t reach undesired areas in the building and thermal envelope.

BE PROACTIVE AND PLAN TO TEST EARLY

Get in touch with Taitem or your blower door consultant EARLY in the design and construction process so that a test plan can be developed to make best use of the technology and service.

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Commissioning Code updates in NYS – Taitem presents at NYS Green Building Conference

Taitem was happy to be among the top green building researchers, educators, and practitioners at the New York State Green Building Conference in Syracuse, New York. One team presented on the progress of its RetrofitNY project, and another led a session on updates to the NYS Commissioning Code.

Lou Vogel, President, and Nate Goodell, Senior Engineer, presented “Shifting the Baseline: An update on Cx Construction Code in NYS.” As of October 2016, the New York State Commercial Construction Code was updated to align with international standards for energy efficiency and building performance. Part of this alignment added a requirement for certain buildings to receive commissioning per the 2015 International Energy Conservation Code. This change has shifted commissioning from an activity usually limited to high-performing buildings to one that will be part of many new commercial construction projects. With this shift comes the need for education and outreach to stakeholders who might not be familiar with commissioning or with the new code requirements. Lou and Nate explored which buildings are impacted by the new code, what commissioning entails, and why it is required. They concluded with lessons learned through their extensive field experience on how to make the commissioning process easier.

Click here to download the complete presentation.

About NYS Green Building Conference

As the premier green building conference in the Northeast, the New York State Green Building Conference’s progressive advisory council has fostered growth by consistently bringing together top green building researchers, educators, and practitioners. Conference participants represent many industries including architecture, engineering, construction, consulting, deconstruction, landscape architecture, government, higher education, K-12 education, state agencies, real estate, and management firms.

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