Water pooling under a slab often means the damp course is broken
The damp course stops water from rising. If it is cut or blocked, water enters.
Morayfield 4506 · 5 August 2026
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In short: Broken damp courses, poor drainage and slab cracking in Morayfield.
How water travels
Ground water moves through soil and up through the base of a house. The damp course stops this path.
The break
We have seen the damp course cut through during excavation for new builds in Morayfield. This leaves a direct path for water.
Drainage issues
A new home on a sloped block in Morayfield can have water flowing towards the house. Poor drainage forces water to the slab.
Signs of the problem
Water pooling under the slab or inside the house after rain suggests the damp course is compromised.
The fix
Install a new damp course at the correct height and ensure positive drainage away from the building.
Written by our local inspection team from work carried out in Morayfield. Licensed building practitioners.
