A Leading Provider of Geophysical Solutions

Pile Integrity Testing

Concrete Scanning

Locating and marking out reinforcing steel.

Locating metallic & non-metallic pipes, conduits & post-tension cables. Detecting voids and defects in concrete slabs and structures.


Shear-wave Testing

Providing Geophysical Services throughout
New Zealand

Ground Penetrating Radar

Geophysics can simplify complex problems and provide significant cost savings

Our experienced team provides geophysical contracting and consulting services to clients in the Energy, Geotechnical, Civil Engineering, Mineral, Archaeological, Agricultural and Environmental sectors. We have an experienced and friendly team coupled with one of the largest equipment resources for shallow geophysical surveys in the independent private sector. We continue to grow in response to new applications where innovation is required. If you have a project that requires information on the subsurface and you are looking for a non-invasive method to describe the parameters of that subsurface, give us a call today.

The SGL crew eco-commute

August 23, 2019
Most of the SGL team members are now eco-commuting to and from our offices each day. In order to reduce our impact on the environment our employees are choosing to travel using a selection of alternative transport options including cycling, E-bike, E-scooter and carpooling. Eco-commuting is not only...
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