Ceiling joints not back blocked

What it is

Plasterboard ceiling joints with no backing pieces fixed above them.

Why it matters

Back blocking holds the joint flat. Without it, ceiling joints are more likely to crack and show.

How we check it

We inspect the top side of the ceiling from the roof space.

The fix

Install back blocking to AS/NZS 2589.1, then repair any cracked joints.

How common it is

You can only see this from the roof space, which is why we go up on every handover.

Where we check for this

• PCI (handover) inspection