29/05/2026
The Blower Door Test.
The gold-standard for airtightness testing.
The average home hits 20 ACH at 50 pascals of pressure. Meaning it loses its entire air volume 20 times over, every hour at this pressure.
The strictest building standard in the world, Passivhaus, requires 0.60.
And we hit 0.39.
Tested on MODULAR, 142m2, fully mounted on-site, ready for move-in. Assembled out of the 3 separate modules.
MODULAR by BIOBUILDS
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