Slab Leak Detection in Duncan, BC

The warm spot tells you roughly where the water is — not where the pipe is, or what else is embedded in the slab. Cutting on thermal alone risks hitting rebar or a post-tension cable. GPR maps the slab internals so the patch lands on the pipe and nothing else.

Yes — PT cable mapping is one of GPR's core jobs. Cutting a tensioned cable is catastrophic, so on any post-1970s suspended slab we map cables first and mark the repair window between them.

Standard 100–200 mm residential and commercial slabs are well within 1.6 GHz range. Thickened footings and toppings up to ~45 cm still image clearly; beyond that we adjust antenna frequency.

No. GPR, thermal, and acoustic are all surface-contact, non-destructive methods. The only opening ever made is the final repair patch — by your contractor, exactly where we mark.

Duncan sits on Cowichan Valley alluvium — sands and silts with seasonal saturation. Summer scans reach well into the alluvium; winter saturation shortens range. Farm and First Nations lands carry generations of undocumented lines. 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.

Duncan 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).

Pricing matches our province-wide structure — no regional premium for Duncan. 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.