The blower door allows us to find out how much air is moving through the building’s envelope when the house is either pressurization or depressurization. Opening, closing, or sealing the “planned opening” such as doors, windows, ducts and vents in the air control layer will have an effect on the blower door test results.
will do the testing, however. Some code-enforcement offices let contractors do their own blower-door tests. Others require third-party testing. It seems likely that some will have their inspectors do the testing. How does a blower door work? A blower door has a powerful variable-speed fan and a two-channel digital manometer, or air-pressure gauge.
Blower door test are really just for inspections when you have to pass certain requirements. I work in construction and build low income housing. We are strictly regulated and we have to meet certain requirements. We do blower door test to check those. On renovation jobs we have to show a certain amount of improvement.
A collection of one thousand construction details organized by climate and house part. Search and download construction details. If the ceiling drywall will be the primary air barrier, then of course the ceiling drywall needs to be installed and taped before the blower-door test can be performed. For more information on these issues, see Blower
A blower door is just a big fan than sucks air out (depressurizes) or blows (pressurizes) air into a home at a set pressure. The most common way to set the blower door is for depressurization and is what we will assume for this section. The idea is that
Zonal testing is the process of testing an area in a house to see if the space has a connection to the outside. Instead of looking for an individual air leak, the test checks a space or a room for all air leakage in the designated area. This speeds up the process for finding air leaks by pinpointing the rooms or areas with the biggest issues.
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    • how does a blower door test work