Vapour barrier faults on a slab near Rockbank
Not extended, and punctures left open.
In short: The barrier only works as a continuous layer, and both faults end at the pour.
What it does
Stops ground moisture rising through the slab and protects the reinforcement.
Not extended
We recorded a barrier that did not run beneath the whole slab, leaving part of it unprotected.
Punctures unsealed
Punctured areas have to be sealed with polyethylene tape. Left open they are a direct path.
Why both matter equally
Either one breaks the continuity the barrier depends on.
When to look
The day before the pour, the only time any of it is visible.
Written by the Owner Inspections team from inspections carried out in Rockbank. Licensed building practitioners, Building & Plumbing Commission registration CDB-U 53425.
