

When the measurements indicate that excess air escapes (or the pressure measurement: is sucked) it is important to find the places where leaks are.
There are a few methods for:
Possible places of leakage include the connections of frames of windows and doors, floor cracks, roof connections and cable conduits.
In the design, in the context of airtightness to mind are: “maximum allowable deformation of air-sealing materials, making cuffs with feedthroughs, masking the overlap of vapor barrier films, no breakthroughs in vapor films, check on delivery details aimed are on the air-tightness”
The timing of the measurement can best be done is not established. Resembled the moments just before the completion or just before the completion of a new building the best because then all kinds of (repair) work can be done by the contractor, especially if prior arrangements have been made on the airtightness of the building.
Possible leak locations are the connections of frames of windows and doors, floor cracks, roof connections and cable entries.