Serving Oakland and Macomb Counties Office hours: Monday–Friday, 8:30 a.m.–4:30 p.m.

The short answer

Start with the complete system and the evidence

The first visible symptom does not always identify the actual failure. Sandison documents operating condition, connected components, safety concerns, access, and the evidence needed to choose a defensible next step.

What Sandison evaluates

A practical path from symptoms to the right scope

  • Clear diagnostic process
  • Licensed multi-trade coordination
  • Repair and replacement options
  • Residential and commercial support

Concealed leak investigation

A wet floor does not automatically identify the failed pipe

Water can travel along framing, flooring, insulation, conduit, pipe penetrations, and slab transitions before it becomes visible. Sandison narrows the source by documenting meter behavior, fixture use, pressure loss, equipment drainage, temperature patterns, accessible piping, and the timing of the symptom. For a suspected under-slab failure, the goal is to separate a supply leak from drainage, groundwater, condensate, appliance discharge, or an exterior source before recommending destructive access.

Repair scope

The lowest-disruption repair begins with defensible location evidence

Once the likely source is narrowed, the repair plan considers pipe material, isolation options, routing, finished surfaces, structural access, code requirements, and whether a localized repair or reroute provides the more durable outcome. Thermal imaging and acoustic information can support an investigation, but neither is treated as proof by itself. Sandison explains what is confirmed, what remains uncertain, and what opening or testing is necessary to see the concealed condition directly.

Primary references

Verify the local and credential information.

Common questions

What property owners ask

How does Sandison evaluate leak detection and plumbing repair?

Sandison starts with the symptoms, the property, the connected systems, and observable evidence before recommending repair, replacement, maintenance, or further testing.

Can I request service for leak detection and plumbing repair online?

Yes. Submit a non-emergency service request for review, or call the office during business hours. For an urgent active failure, call the emergency number directly.

Does Sandison serve both homes and commercial properties?

Yes. Sandison serves homeowners, property managers, businesses, and institutional facilities throughout Oakland and Macomb Counties.

Evidence and review

Why this page can be trusted

Owner-reviewed Sandison service record and verified Michigan trade scope.

Author and qualified trade reviewer: James Sandison, B.S. Mechanical Engineering, Oakland University. Michigan Mechanical License 7115733 · Michigan Master Plumber 8112263 · Michigan Plumbing Contractor 800-3618. Last reviewed 2026-08-28.

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A welcome from Sandison

Put $50 back in your pocket.

New residential customers can save $50 on a qualifying completed repair or installation.

Offer codeWELCOME50

Licensed multi-trade service · Office-confirmed scheduling

New residential customers only. One offer per household. Cannot be combined with another offer. Not valid for dispatch or diagnostic fees, maintenance plans, permits, or after-hours emergency service. Qualifying work and final eligibility are confirmed before service.