Ground Penetrating Radar (GPR) Scanning Services in Gauteng
Underground Utility Mapping & Concrete Scanning Across Johannesburg, Pretoria & South Africa
Subsurface Clarity
We map exact locations of utilities, rebar, and voids without invasive digging or core drilling.
Ensure Site Safety
Avoid costly utility strikes, equipment damage, and delays during commercial or industrial excavation.
Structural Integrity
Safely inspect concrete slabs and structures before cutting or drilling to maintain structural strength.
Clear Reporting
Receive detailed photographic and video evidence perfect for plumbers and insurance claims.
Don't let unseen hazards cause costly delays.
Underground utilities and structural rebar are invisible to the naked eye, hidden beneath soil, asphalt, or concrete slabs. Striking a live cable or water main during excavation can lead to severe safety hazards, massive repair costs, and significant project delays.
At FlowVision, we use advanced Ground Penetrating Radar (GPR) technology to quickly and accurately map subsurface infrastructure. Whether you are cutting concrete, drilling, or excavating a trench, our non-destructive scanning methods ensure you dig safely and efficiently.
Schedule a GPR ScanWhat Ground Penetrating Radar Detects
GPR maps subsurface assets that are invisible from the surface—preventing catastrophic utility strikes, structural damage, and costly project delays.
Underground Electrical & Telecom Cables
Accurately map live power cables, fibre optic lines, and telecom conduits before excavation to prevent dangerous cable strikes and service outages.
Non-Metallic Pipes (PVC, HDPE, AC)
Unlike EM locators, GPR detects density changes in soil—allowing us to find PVC, polyethylene, and asbestos cement pipes that traditional cable locators miss entirely.
Metallic Water & Gas Mains
Locate steel, cast iron, and copper water mains and gas pipelines with precise depth and position data to protect critical municipal infrastructure during construction.
Rebar & Post-Tension Cables in Concrete
High-frequency concrete scanners map rebar grids, post-tension cables, and conduits within slabs up to 500mm deep—essential before any core drilling or cutting.
Subsurface Voids & Sinkholes
Detect air pockets, voids, and sinkhole formations beneath roads, pavements, and building foundations before they cause structural collapse or surface failure.
Why Choose GPR & NDT Scanning?
Ground Penetrating Radar is the gold standard for non-destructive subsurface investigation—delivering accurate data without digging, drilling, or damaging the site.
Prevent Cable Strikes
Eliminate the risk of hitting live electrical cables, gas mains, or fibre optics during excavation—protecting workers and avoiding costly penalties.
Avoid Project Delays
A single utility strike can halt a project for days or weeks. Pre-dig GPR scanning keeps your construction timeline on track and on budget.
H&S Compliance
Meet OHS Act and construction regulation requirements for subsurface investigation before any breaking ground activities on active sites.
100% Non-Destructive
GPR emits safe electromagnetic pulses with lower radiation than a mobile phone. No digging, no drilling, no disruption to the site or the public.
GPR Scanning Service Areas in Gauteng
Flow Vision deploys GPR teams across all major commercial and industrial hubs in Gauteng. Same-week mobilisation available.
We also deploy nationally for large-scale infrastructure, mining, and construction projects across South Africa.
Frequently Asked Questions About GPR Scanning
Technical answers to common questions about Ground Penetrating Radar, concrete scanning, and utility detection in Gauteng.
Yes. Unlike traditional electromagnetic (EM) locators that only detect metallic services, GPR detects physical density changes in the soil. This allows us to accurately locate PVC, HDPE, asbestos cement, and other non-metallic pipes that EM equipment cannot find.
This is one of the most significant advantages of GPR over conventional cable locators—making it essential for sites with mixed-material utility networks.
Penetration depth depends on soil conductivity and the antenna frequency used. In typical South African soils, our systems scan several metres deep for utility mapping, while high-frequency concrete scanners read up to 500mm for rebar and post-tension cable detection.
Our technicians select the optimal antenna frequency for your specific site conditions to maximise both penetration depth and resolution accuracy.
Concrete slabs contain rebar, post-tension cables, and electrical conduits that are invisible from the surface. Cutting into a post-tension cable can cause catastrophic structural failure and serious injury.
GPR scanning maps these embedded elements non-destructively before any drilling begins—allowing your team to mark safe drilling zones and avoid critical structural reinforcement.
Absolutely. GPR is completely non-destructive and emits electromagnetic pulses with lower radiation levels than a standard mobile phone. It is safe to operate around workers, the public, and sensitive equipment.
There are no special safety zones or exclusion areas required during GPR scanning, making it ideal for active construction sites, occupied buildings, and public infrastructure.
We service Johannesburg, Pretoria, Centurion, Midrand, Sandton, Ekurhuleni, East Rand, and all surrounding Gauteng regions. We also deploy nationally for large-scale commercial and infrastructure projects.
Our GPR teams are mobilisation-ready and can typically be on-site within 24–72 hours for urgent pre-dig scanning requirements.
Pricing depends on site size, scan area, and project complexity. Flow Vision provides transparent quotes after a free initial site assessment for all GPR projects.
Our rates are competitive for both once-off pre-dig scans and ongoing project support contracts. The cost of scanning is a fraction of the liability from a single utility strike.
Reliable Pipeline Data for Informed Decisions
Equip yourself with the data you need. Flow Vision's detailed inspections empower engineers and facility managers to make informed decisions.
