Ducting that was left resting on the ceiling
Crushed duct moves a fraction of the air it was sized for.
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NSW Fair Trading -
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In short: Ducts not suspended on a Leppington lock-up inspection.
How it should sit
Flexible ducting is suspended from the roof structure so it runs in a smooth line with its full cross section open.
What we recorded
Ducting resting directly on the ceiling frame on a Leppington job, rather than suspended.
What happens
The duct crushes under its own weight and the insulation around it, the cross section closes and the airflow drops.
How it shows up
A room that never reaches temperature, months after you move in, with the cause above a finished ceiling.
Why lock-up is the moment
After the linings go up the run is inaccessible without cutting the ceiling open.
Written by our local inspection team from work carried out in Leppington. Licensed building practitioners.
