The large external fan, known as a ‘modified blower door’, is used to put positive pressure into the building with the addition of a heater, so the system can achieve optimal room temperature and humidity during the air sealing process, allowing more sealant to be sprayed into the space for a faster, more efficient sealing process.
Similarly to the way air escapes from holes in a bicycle tyre, when there’s pressure inside a building, air leaks out uncontrollably through breaks in the building envelope.
AeroBarrier’s Connect air sealing system and our technicians use this process to their advantage by monitoring the escaping air in real time to draw the sealant to actual areas of leakage.