Flashing fasteners at the wrong spacing

In short: Apron flashing fastened at 500 mm centres on a Marsden Park job.

What an apron flashing does

Closes the junction where a roof meets a wall, shedding water away from the joint.

What we recorded

Fasteners at 500 millimetre spacing on a Marsden Park apron flashing, wider than the requirement.

Why spacing matters

Between fasteners the flashing can lift and flex in wind, and a lifting edge is where wind driven rain gets underneath.

How it fails

Slowly. Water works into the joint, then the substrate behind it, long after anyone connects it to the roof.

The fix

Additional fasteners at the specified interval, straightforward while access is still available.

Written by the Owner Inspections team from inspections carried out in Marsden Park. Licensed building practitioners, NSW Fair Trading licence 366177C.

More defect reports guides for Marsden Park

13 April 2026 · 6 min read

Defect, or simply within the allowance

The argument is about permission, not observation.

27 April 2026 · 6 min read

Two years passes faster than anybody expects

The short warranty is the one that catches owners out.

2 March 2026 · 7 min read

Eleven pinholes, and none visible from the doorway

The most repeated finding in this suburb's set.

Questions Marsden Park owners ask about this

Is it really a defect?

Where the spacing departs from the requirement, yes, and the report cites the measurement rather than describing it.

Would I see it from the ground?

Rarely. It is a roof level detail, which is why a drone pass earns its place.

Is it urgent?

Not dramatic, but it is cheap now and awkward later. It belongs on the list while the builder is engaged.

Does it relate to the pressure flashing?

They are part of the same family of junction details, and both were recorded on these jobs.