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

Plumbing repairs start by tracing the problem to the fixture, supply pipe, drain, valve, or connected equipment involved. Sandison checks the accessible system and explains the repair options, required access, and any conditions that need further investigation.

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

Licensed plumbing diagnosis

The visible leak or backup is evidence—not automatically the whole cause

Sandison starts plumbing service by separating the symptom from the system that produced it. The review can include fixture operation, supply pressure, meter movement, shutoff condition, drainage behavior, venting, water-heating equipment, accessible piping, thermal patterns, camera evidence, and the timing of the problem. Michigan Master Plumber and Plumbing Contractor responsibility supports both everyday repair and the more difficult work where a concealed leak, failed connection, drainage defect, or connected mechanical system has to be narrowed before finished surfaces are opened.

Repair and installation scope

A durable plumbing recommendation accounts for access, materials, code, and connected equipment

Once the condition is understood, Sandison explains what can be repaired, what requires replacement, and what remains concealed or uncertain. Residential and commercial scopes may involve fixtures, supply piping, drainage, sump systems, water heaters, backflow assemblies, water treatment, equipment connections, venting, gas piping, or coordination with electrical and mechanical work. The objective is a practical repair path with clear boundaries—not a broad replacement recommendation that ignores the actual failure or a temporary correction presented as a permanent solution.

Primary references

Verify the local and credential information.

Common questions

What property owners ask

Why is the water pressure low at only one fixture?

A problem limited to one fixture calls for checking that fixture, its valves, and the nearby supply piping. Pressure changes throughout the property require a broader review of the water supply, treatment equipment, and connected plumbing.

Does a recurring leak mean the whole house needs repiping?

The decision depends on the failed material, previous repairs, pressure, water conditions, and the condition of accessible piping. A localized repair may fit an isolated defect; repeated failures can justify evaluating a larger section or an alternative route.

What information helps locate a plumbing problem?

Describe which fixtures are affected, when the problem happens, and whether it changes with water use. Existing photos, previous repair records, and the location of visible moisture help plan the investigation without opening finished surfaces prematurely.

Evidence and review

Why this page can be trusted

Service information based on Sandison’s documented trade scope and the technical references below. Contact the office to discuss the conditions at your property.

Technical lead: James Sandison, B.S. Mechanical Engineering, Oakland University. Michigan Mechanical License 7115733 · Michigan Master Plumber 8112263 · Michigan Plumbing Contractor 800-3618. Service information record: 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.