Corbett performs a blower door test on LG Squared Architecture's #OffGridHomestead. Will Chris's toolshed beat the record set by the #DryVault? Will Passive House standards be outperformed? Will Corbett remember to plug in all his hoses?
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!
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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.
Now that Corbett's finished building the #DryVault, a super-sophisticated, dessicant-dehumidified tool shed, it's time to whip out the Retrotec 5000 and FLIR T660 to see exactly how well he did. For more about any of the building or testing products used, visit:
Welcome to the #DryVault, a super airtight, insulated, and dehumidified tool shed for the Building Performance Workshop's diagnostic tools in Atlanta, GA. Corbett will be helping homeowners make higher performance decisions on home improvement and new construction in Atlanta from this home base, and we can't wait to show off the framing and airsealing systems used here! For more on the airsealing products used, check out 475 High Performance Building Supply.
Building performance expert Corbett Lunsford respects proof of performance, and ProClima's airsealing tape has now been proven to him. See Tescon Profil tape that was applied to the subfloor of the #TinyLab as it holds up to 5 months of pure abuse during the construction process.
Join building diagnostics guru Corbett Lunsford as he tests the airtightness and insulation of the #TinyLab, the highest performance tiny house on wheels in the world. Using a Retrotec 5000 blower door, DM-32 smart gauge, and ThermApp infrared camera, he proves that the #TinyLab is truly a work of science and art at the same time.
A need to run a Blower Door test at a 3 house complex here in Greece. The houses are in the row, this means that normally I should have three Blower door devices, in order to measure the house in the middle. But I have only one Blower Door!
Additionally, I will need to hand over a written document (report), in order to certify the construction to the Passive House Institute. Do you have any suggestions?
Best and thanks in advance,
Great question! You do not, in fact, need multiple blower doors, because you actually want to include the unit-to-unit air leakage. The measurement of all uncontrolled air leakage to outdoors and to other townhouses is a valuable one, and it should be the goal especially when building to Passive House (or PassivHaus) standards. Watch this video for a visual explanation:
I thought I would send this your way. I live in the Central Valley of California. Yesterday it reached 106 degrees. I did an experiment with my house. My 1,883 sq./ft. house had a deep energy upgrade over three years ago. The heating and cooling unit is a 2 stage/2 ton heat pump with no back-up heat. The second stage of cooling is disconnected so I am cooling with 1.4 tons. That is one ton for every 1,345 sq./ft.
Yesterday morning I left the house at 7:40 am. It was 75 degrees in the house and 75 degrees outside. I closed all of the blinds, turned the HRV off and turned the Heat Pump off. In other words, I let the house float. It got up to 106 degrees in Stockton yesterday. Luci my bride got home at 5:40 in the afternoon and the house was 78 degrees. She turned the thermostat back on and it brought the temp back to 75 in 30 minutes.
This stuff really works.
Keep up the GREAT work;
You are awesome. I'm not sure I know many other home performance experts who have fixed their own homes- most of our families have to suffer at home while we help other people get comfortable. Thanks so much for sharing the good word!
Today Corbett talks with Ken Levenson of 475 High Performance Building Supply about Passive House gaining a foothold around the world, what it takes to build for performance, and why the materials and components have to be shipped across the ocean to get to us. Sponsored by Fall Fast Track- the 6 week distance mastermind course for profiting from performance in the private market.