Under surface voids detection in Sydney and across NSW

Non-destructive void detection methods

We use advanced GPR scanning to detect changes in subsurface conditions that may indicate voids or loss of ground support. This non-invasive approach allows investigations to be carried out efficiently, without excavation or disruption to surrounding assets.

Under surface voids we identify:

• Natural cavities and developing sinkholes
• Erosion voids and washouts around services
• Abandoned or undocumented underground spaces
• Air gaps beneath concrete slabs and pavements
• Subsurface separation and delamination

Why under surface void detection matters

Undetected voids beneath structures and pavements can compromise stability over time. Early identification supports proactive planning, targeted investigation, and risk management before construction, repair, or remediation works proceed.

Common applications:

• Pre-construction site investigations
• Infrastructure condition assessments
• Pavement and roadway evaluation
• Sinkhole investigation support
• Risk assessment prior to repair works