ALWAYS Do This Test! - Blower Door Test Results
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- Опубликовано: 23 авг 2024
- The Blower Door Test is an essential part of building your home efficiently, and is a great way to find air leaks around your new build home BEFORE drywall, and fix leaks around your home.
Everyone should do a Blower Door Test, as this one test can save you money and protect your new build home down the road. We do a Blower Door Test as part of our custom home building process, meaning every home gets one completed, regardless of energy certifications.
Air leaks within a home can cause expensive problems in the future, particularly if air and vapor barriers aren't secured all the way around the house, and can cost you more money in the long run with increased heating and cooling costs.
We are finishing up this custom Net Zero home, and we always perform a Blower Door Test on our new construction homes. No matter if it's a Net Zero, Passive House, or an energy efficient home build, Blower Door Tests help our team find potential drafts and areas of inefficiency around the home. And, we have the ability to fix these leaks before putting the drywall up. This is why you should ALWAYS get a Blower Door Test done when building a home.
There are many tips for building an energy efficient home at a low cost, and we went over some in our previous video on our preferred exterior wall assembly with 2x4 studs. We put all kinds of tips and tricks for improving home efficiency to work when building our net zero homes, and this video highlights the advantages of some of them, as demonstrated by our Blower Door Test results!
We are constantly balancing home building techniques that are cost effective, easy to build with material from Lowe's and local building supplies stores, and that actually help home energy performance.
On top of that, in this video we walk you through some easy ways to check and improve your energy efficiency after performing a Blower Door Test, like taking the time to walk through the entire property and identify small air leaks, perfect your air and vapor barrier installation, and stop drafts within your home.
For some context about what a Blower Door Test result means - a 2.5 air exchanges per hour (ACH) is required for a code-built house here in Calgary. The Net Zero requirements are 1.5 ACH and the Passive House standard is 0.6 ACH.
Check out our playlist for the full series of our Net Zero Custom Home Build, here:
And let us know in the comments - did you think we were going to pass the Blower Door Test!?
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BD Test should be done before rough in inspection. The leaks usually are exterior penetrations. Easier to find when walls are open before insulation. Most can be seen visually with light coming through. Biggest leaks are rim joist, plumbing, electrical, sewer and top plate; walls to attic, ceiling lights and HVAC penetrations.
Penetrations will not be sealed with tape over netting.
ERV's are needed to keep the house fresh and safe from poor IAQ and moisture build up.
Great score, well done! I'm a little surprised that drywall made such a big difference, but that's an impressive result.
First, in real life no one will put blower in front door , and pressurize the house. So it is just indication. . Second , for poly to poly connections, house wrap tape like Tuck Tape, is air tight and does excellent job. For interior poly to wood connections, Tuck Tape still work, but I am not sure if it is meant for that
I'm not a builder but I feel like there should be an easier way to locate those leaks. Maybe some sort of colored smoke idk.
So you do all that work putting up poly and caulking it, tapping it and trying to make it as tight as possible. Then the day the new homeowner moves in all the work goes down the toilet when the start hanging pictures and tv's. Do you know for every nail hole in that poly 1 quart of water can get into the wall cavity? Then it can condense on the outside sheeting and get the insulation wet and eventually cause mold.
I've been building over 42 years and never have understood the logic of poly on the walls. I built a house in 1995. Building department forced me to put it in. Currently remodeling that house and all the drywall is remove along with all the poly and definitely not going back in.
exactly, this is obsessive insanity. Everyone nodding their heads and agreeing in the comments are nuts. This is a disaster financially and from a construction standpoint.
That looked messy, sealing outside is so much easier.
Have you considered using the Siga Majvest 500 on the exterior for your air barrier?
I like the fact that you are building homes that are more energy efficient than most leaky tyvek boxes built in Calgary. Cudos.
But there is easier faster and better ways to get airtight envelope and 0.4 or lower on your blower test.
nobody should do this to their home.
How do you get around Sick Building Syndrome when you make a house this tight? What happens when the mechanical ventilation system goes down?
I think he probably uses a heat recovery ventilator (HRV), but as a designer building so tight is concerning. Here it's 5 years to discover, 2 years to litigate.
You open a window?
@@johnweekend8652 That'd never work. The only solution is obvious: You gotta start punching holes in the exterior walls.
Doing it right the 1st time is the most cost effective way. A house should not be totally air tight. Asking for problems down the road.
This is so asinine it is astounding. Nobody builds houses like this, Completely impractical.