Home performance articles and stories from the field with internationally respected building forensics guru Corbett Lunsford at the Building Performance Workshop. Hear new episodes of the Building Performance Podcast, see new videos from the Home Performance YouTube channel, and learn all about how diagnostic testing (more than an 'Energy Audit') can make home improvement and new home construction a proven process!
Filtering by Tag: blower door
Corbett Lunsford loves infrared cameras (he has six of them, including this FLIR One Pro) but they're not the whole story. Pair your diagnostic tools to be a mastermind of home performance.
Learn more at http://HomePerformance.training
Corbett runs a full enclosure diagnostic on a one-story ranch for his family before planning and performing the improvements on vented crawlspace and attic.
Corbett talks through the basis of design for his family's upcoming house construction in Atlanta, GA. Subscribe to stay tuned for videos during the build! To learn more about the high performance building products being used, click below:
475 HIGH PERFORMANCE BUILDING SUPPLY
GEORGIA-PACIFIC FORCEFIELD SHEATHING
MITSUBISHI ELECTRIC COOLING & HEATING
ULTRA-AIRE VENTILATING DEHUMIDIFIERS
CHRONOMITE POINT-OF-USE WATER HEATERS
See bits of four episodes from Home Diagnosis Season 1! More at: https://HomeDiagnosis.tv
That's a wrap on season 1 of Home Diagnosis! You can expect the episodes to be finished by our friends at ECG Productions in the coming months, to air on PBS stations everywhere by this coming winter! MASSIVE THANKS TO OUR VISIONARY TEAM OF SPONSORS:
Corbett presented for Broan-Nutone and Fantech at the International Builders Show (IBS) 2018 in Orlando, and in case you weren't there, here it is! Learn all about why builders, manufacturers, contractors, insulators, HVAC techs, and others in the construction industry are starting to care about, and act upon, the metrics that come from home performance testing.
Thanks as always to the sponsors who are leading the charge in making measured performance mainstream with 'Home Diagnosis' coming to TV screens soon!
See how Corbett teaches home performance to the uninitiated after having given this presentation 214 times across the U.S. on the Proof Is Possible Tour. Special thanks to the tool companies and all other sponsors of the upcoming TV series 'Home Diagnosis' who have invested in making home performance a mainstream topic:
Last week I made my first site visit to the mountains of North Carolina to start performance testing the #OffGridHomestead. This is an uber-homebuild with LG Squared Architects (now also LG Cubed Builders) and Chris Laumer-Giddens has a lot to show us, even at this rough in stage, with saws running and tractors rumbling around.
Good day Corbett,
I wanted to let you know, that I really enjoy your approach to the whole building science and your building performance workshop website. I am relatively new as a Resnet Rater and the county where I live is Collier County in Florida.
They recently adopted the new code standard set by the state. My question relates to multifamily condo units. I have a client that did renovations to a 2,500 sq. ft. penthouse condo and the front door to the unit is I a common area. The county wants them to perform a blower door test in order to obtain their certificate of occupancy.
I realize this would be a compartmentalize test, since I can only have access to the unit they renovated for their client. Knowing that I will encounter not only leakage to outside but also internal leakage between units. I was wondering what the best approach would be to ensure a successful test. Collier County requires between 3 ach and 7 ach for a test to pass code.
Any information would be appreciated. Thanking you in advance.
Thanks for your question, it's a good one! First off, you should be fine if they did a good job with the renovations- 7 ACH50 is not terribly hard to achieve.
When you set up your blower door at the front door of the condo, you'll blow air out into the common hallway, so you want to make sure all possible windows/doors in that hallway are open to the outdoors. Use the emergency exits if necessary (make sure maintenance knows what you're up to).
You'll be testing the condo's leakage to everything outside of it, including the downstairs unit, but that's intended. They really will have air leaking between the two condos, if there are leakage pathways, and you want to be testing for that and including it in your blower door test result.
Ask your code official if they want the result to pass the residential code or commercial code, because you have to test at 75 Pa in commercial. I always advise doing a multipoint test (get the flows on at least two pressures, like 25 Pa and 50 Pa) so you can extrapolate the 75 Pa if anyone ever wants it in the future. Saves you a trip.
AS AN ADDED BONUS, consider doing a Zonal Pressure Test on the unit downstairs, to see how much the blower door is affecting it. Always nice to have more data than you need.