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In existing buildings, the entire process should take between 1hour and 1.5hours (typical 2 story house 2000sq.ft or 190sqm) naturally depending on the size of the property larger properties will take longer.

In new buildings where the airtightness membranes and tapes are installed to achieve a good air change reading, the process can take 2hours-2.5hours. This depends largely on the craftsmanship of the installer.