Blower Door Test · Willunga

Blower Door Test — Willunga Shouse Conversion

Project overview

The owners of this project purchased an existing shed/house (“shouse”) that was unfinished, with the vision of transforming it into a comfortable, energy-efficient home. Rather than starting from scratch, the project focused on upgrading the existing structure, improving the building envelope, and integrating modern building performance principles to create a home that is healthy, comfortable and efficient to run.

3.556 ACH

Air changes @ 50 Pa

3.393 m³/(h·m²)

Air permeability @ 50 Pa

486.7 cm² · 0.049 m²

Equivalent leakage area

Blower Door TestingAirtightnessShed ConversionRenovation & Extension

Outcome

Result: 3.556 ACH @ 50 Pa — equivalent to a 486.7 cm² (0.049 m²) hole in the building envelope, about a 25 cm round opening. Main leakage traced to the sliding doors and the bathroom/laundry exhaust fans, despite dampers already fitted.

Project gallery

Blower Door Test — Willunga Shouse Conversion — photo 1
Air leakage detected at the head of the sliding door during a blower door depressurisation test at Willunga
Air leakage detected at the top of the sliding door during depressurisation testing.