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GPR Services · Vancouver Island

Parking Garage Slab Scanning in Nanaimo, BC

Parkade decks fail from the inside — chloride-corroded rebar, delamination, membrane leaks. GPR maps the deterioration before the spalling starts. Serving Nanaimo and the Vancouver Island region with certified technicians, non-invasive methods, and insurance-ready documentation — since 1999.

Deck surveys
Full-area condition
Corrosion zones
Mapped by signal loss
PT + rebar
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Free phone consult · No pressure · Mon–Sat 8am–6pm PT

Nanaimo ground conditions & what they mean for GPR

Local geology: Nanaimo sits on till and sandstone benches — with documented historic coal workings beneath parts of the city. Standard till performance at surface, but Nanaimo's defining subsurface feature is its coal-mine legacy: old workings and shafts underlie several neighbourhoods, making void detection a local specialty.

Local building stock: Harbour-city mix of heritage districts, mid-century suburbs, and rapid hospital-area densification.

Common parking garage slab scanning work in Nanaimo

  • Void scans over historic coal workings
  • Pre-development due diligence
  • Service leak tracing in mid-century suburbs
  • Strata parkade assessments
  • Depreciation report inputs
  • Membrane failure investigations

How the Nanaimo site visit works

  1. 1

    Grid the deck

    Drive lanes and stalls scanned in a continuous grid; suspended decks and slab-on-grade handled with appropriate antennas.

  2. 2

    Map deterioration

    Chloride-saturated and delaminating zones attenuate the GPR signal distinctively — those zones get boundary-mapped.

  3. 3

    Correlate leaks

    Membrane failures above show as moisture anomalies; we tie deck condition to the leak sources driving it.

  4. 4

    Engineer-ready report

    Condition plan with quantified deterioration areas — the basis for repair budgeting and depreciation planning.

Nanaimo questions, answered

Our parkade ceiling shows white stains and drips. What does GPR add?

Efflorescence tells you water is moving through the slab; GPR tells you what it has done inside — where rebar corrosion is active, how far delamination extends, and which bays need repair versus monitoring. Repair scoped on stains alone routinely misses half the deteriorated area.

Can you scan while the parkade stays open?

Yes — we work bay-by-bay with simple cone closures, off-peak where stalls are assigned. No resident parking disruption beyond the bay being scanned.

How does this feed a depreciation report?

Quantified deterioration percentages per deck area convert directly into renewal-cost line items. BC depreciation providers accept our condition plans as appendices — it turns a guess about parkade life into a measured input.

Is this the same as chain dragging?

Chain drag finds delamination that already exists by sound; GPR maps both current delamination and the chloride/corrosion zones that predict the next five years of it. Most engineering assessments now want both — we coordinate with the engineer's protocol.

How deep can GPR scan in Nanaimo?

Nanaimo sits on till and sandstone benches — with documented historic coal workings beneath parts of the city. Standard till performance at surface, but Nanaimo's defining subsurface feature is its coal-mine legacy: old workings and shafts underlie several neighbourhoods, making void detection a local specialty. We select antenna frequency to match — and where local ground limits radar depth, we pair GPR with electromagnetic locating, acoustic methods, or tracer gas so the survey objective is met regardless of soil conditions.

Do you actually work in Nanaimo, or dispatch from elsewhere?

Nanaimo is part of our standing Vancouver Island service area — the same certified technicians and equipment that cover the rest of the region. Scheduling is typically within 24–72 hours, with same-day response often possible during business hours (Mon–Sat, 8am–6pm Pacific).

What does parking garage slab scanning cost in Nanaimo?

Pricing matches our province-wide structure — no regional premium for Nanaimo. Most residential-scale work falls in the $350–$1,200 range depending on scope; commercial and multi-site projects are quoted after a free phone consult. Call 604-239-9934 and we will give you a tight estimate in five minutes.

Need parking garage slab scanning in Nanaimo?

Free phone consult with a certified GPR technician — we will tell you whether a survey is warranted and quote it in five minutes. No pressure.

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