Ducting left resting on the ceiling frame
A crushed duct moves a fraction of the air it was sized for.
In short: Ducts not suspended, recorded three times on Marsden Park jobs.
How it should sit
Flexible ducting is suspended from the roof structure so it runs smoothly with its full cross section open.
What we recorded
Ducting resting directly on the ceiling frame on three separate Marsden Park records.
What happens
The duct crushes under its own weight and the insulation over it, the section closes and the airflow drops.
How you find out
A room that never reaches temperature, months after moving in, with the cause above a finished ceiling.
Why lock-up
After the linings go up the run is inaccessible without cutting the ceiling open.
Written by the Owner Inspections team from inspections carried out in Marsden Park. Licensed building practitioners, NSW Fair Trading licence 366177C.
