When it comes to measuring the airtightness of a home or building, and how much air is leaking into it, a blower door test is the universally accepted method. It’s why AeroBarrier uses the test as part of its air sealing process. A structure’s air change rate, or ACH, establishes a baseline of leakage before air sealing.
During the AeroBarrier process, their software monitors the ACH as the technology seals leaks in the building envelope and dials in a precise level of airtightness.
AeroBarrier’s impact
The before and after leakage is recorded on their certificate to show AeroBarrier’s impact
The before and after leakage is recorded on their certificate to show AeroBarrier’s impact. If a blower door test is performed after the AeroBarrier process, it will likely have a higher leakage than AeroBarrier has recorded.
Initially, this may cause concern. But if one looks at how a structure is prepared for each test, it is easy to see why they yield different results.
Consistent Preparation is Critical to Compare Results
As one can see below, a structure is prepared differently for the AeroBarrier process than it is for a traditional blower door test.
AeroBarrier
To ensure the sealant doesn't coat certain surfaces, various envelope components are temporarily covered and secured with tape, including:
- Windows
- Doors
- Fireplace
- Range Hood
- Supply and Returns
- Bathroom Vents
Blower Door
To create a pressure differential in the structure, various envelope components are left uncovered, in the normal or “as used” position, including:
- Windows
- Doors
- Fireplace
- Range Hood
- Dampers
- Mechanical Equipment
AeroBarrier results will typically be tighter than a final blower door test.
Guaranteed Results Every Time
Since the application of its technology allows AeroBarrier to dial in the precise airtightness needed, this is an easily addressed non-issue.
AeroBarrier often makes the building envelope tighter to accommodate for leakage that will be reintroduced once they have removed prep materials. In fact, after a few projects with a builder, AeroBarrier better understands the differences between the two tests and can compensate accordingly.
This allows AeroBarrier to meet any leakage goals every time, helping builders go from hoping to knowing they will meet even the most stringent of codes.
