Danny Gough
  • Male
  • Lewisville, NC
  • United States
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Danny Gough's Discussions

Sealing Flex Duct Passing Through an Air Barrier

Started this discussion. Last reply by Ed Minch Feb 10. 7 Replies

Greetings,In reference to maintaining the integrity of an air barrier, best practice requires all penetrations be properly air sealed. Specifically, when HVAC ducts penetrate the air barrier between…Continue

 

Danny Gough's Page

Latest Activity

Ed Minch replied to Danny Gough's discussion Sealing Flex Duct Passing Through an Air Barrier
"Kent At least in the mid-Atlantic, there is no place in single family detached housing three stories and under that needs to be fire stopped.  There are plenty of areas needing fire BLOCKING, but not fire STOPPING, and single part foam is fine…"
Feb 10
Kent Browning replied to Danny Gough's discussion Sealing Flex Duct Passing Through an Air Barrier
"I think this is one of those areas where compromise is used to have a type of "solution" and move on to bigger issues. But back to you specific comments - By code, flex duct alone CANNOT pass thru a fire rated barrier. If it does, that is…"
Feb 10
Ed Minch replied to Danny Gough's discussion Sealing Flex Duct Passing Through an Air Barrier
"Danny When we find one of these (more and more rare these days) we use single part foam around the perimeter and are very generous with the amount. The hope is that it will compress the insulation enough to reduce any air leakage through that area.…"
Feb 7
Danny Gough replied to Danny Gough's discussion Sealing Flex Duct Passing Through an Air Barrier
"That’s always been a requirement where I live as well. But the concern I have is a penetration through a non fire rated draft stop/air barrier."
Feb 5
Eric Kjelshus replied to Danny Gough's discussion Sealing Flex Duct Passing Through an Air Barrier
"If flex duct/duct board/foam board  duct goes though a fire wall for air flow must change to steel and then fire damper at fire wall.    I have been though this a lot with powers that be known as code pros.   Now I do my…"
Feb 5
Danny Gough replied to Danny Gough's discussion Sealing Flex Duct Passing Through an Air Barrier
"I agree Sean. Unfortunately we are in the minority. Even the site you provided shows sealing the outer scrim of the flex duct. Look at the fourth graphic under. "How to Air Seal a Flex Duct…"
Feb 5
Sean Lintow Sr replied to Danny Gough's discussion Sealing Flex Duct Passing Through an Air Barrier
"metal sleeve is only way IMHO but they do give a way to "comply" with ES https://basc.pnnl.gov/resource-guides/air-sealing-duct-and-flue-shafts under description tab air barrier is rarely a "fire stop" though a fire barrier…"
Feb 5
Danny Gough posted a discussion

Sealing Flex Duct Passing Through an Air Barrier

Greetings,In reference to maintaining the integrity of an air barrier, best practice requires all penetrations be properly air sealed. Specifically, when HVAC ducts penetrate the air barrier between conditioned and conditioned space, both code and Energy Star require the annular space between the hole and the duct be air sealed. Since flex duct seems to be the among the HVAC community favorite material, most of these penetrations is made with flex duct. And in all cases, I see the air sealing…See More
Feb 5
Danny Gough joined Bob Krell's group
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Healthy Indoors (IAQ)

The Healthy Indoors group is focused on indoor air quality (IAQ), mold, moisture control, radon, lead, air duct cleaning & HVAC hygiene, and building performance/ building science-related topics that affect the healthiness of our indoor environments, like air leakage.See More
May 25, 2018

Profile Information

Company
Energy Solutions, Inc.
Professional Certification
Certified ACCA Instructor, NAHB University of Housing Approved Instructor, HERS Rater, NC Licensed Mechanical Contractor, BPI Building Analyst
Professional Interests
Improving the quality of indoor living for all I serve - placing them in the center of the design process and creating an indoor environment that promotes better health and wellness.

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At 3:04pm on December 30, 2013, Diane Chojnowski said…

Welcome to Home Energy Pros! Feel free to join the conversation in the Forum and Groups. And share your energy efficiency photos, videos and upcoming events. If you're blogging about home performance, this is the place for you!


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Diane, HEP Moderator

 
 
 

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